Paediatrics · Full case

Constipation in Children

NICE CG99Idiopathic ConstipationDisimpaction

Overflow soiling ≠ diarrhoeaOverflow soiling (faecal overflow incontinence) is one of the most frequently misunderstood concepts in paediatric constipation. It occurs when a large impacted faecal mass in the rectum and colon cannot be voluntarily passed. The overstretched colon loses sensation and tone; liquid stool from higher in the colon leaks around the impacted mass and appears in the child’s underwear as brown staining or loose stool. Parents and carers — and sometimes GPs — misinterpret this as diarrhoea and stop laxatives, which is the opposite of the correct action. The distinguishing features: background history of constipation; hard stool palpable abdominally; foul-smelling watery or slimy stool in underwear; often no awareness of soiling. NICE CG99: overflow soiling should be explained clearly to parents as a symptom OF constipation, not a separate bowel problem. Treatment: disimpaction of the impacted mass, followed by maintenance laxative therapy.

Movicol Paediatric: disimpaction doseMovicol Paediatric Plain (macrogol 3350 with electrolytes) is the first-line laxative for both disimpaction and maintenance in children with idiopathic constipation (NICE CG99). Disimpaction doses (escalating over 2 weeks): Child 2–5 years: Day 1: 2 sachets/day → increase by 2 sachets every 2 days to a maximum of 8 sachets/day. Child 5–11 years: Day 1: 4 sachets/day → increase by 2 sachets every 2 days to maximum of 12 sachets/day. Child ≥12 years: use adult Movicol (Laxido): 4 sachets → max 8 sachets/day. Each sachet dissolved in 62.5ml water (quarter cup). Disimpaction complete when stool becomes soft, formed, and regular. Maintenance: then step down to the lowest dose that maintains regular soft stools. Key teaching: the disimpaction doses are much higher than many GPs prescribe — underdosing is the most common reason for treatment failure.

Functional constipation: 90% of childhood casesFunctional (idiopathic) constipation — without an organic cause — accounts for approximately 90–95% of childhood constipation cases. The pathophysiology: a single painful defaecation (hard stool; fissure; acute illness) causes the child to voluntarily withhold stool to avoid further pain. Withholding leads to accumulation of stool in the rectum; absorption of water makes it harder; subsequent defaecation becomes more painful; reinforcing the withholding cycle. Over time: rectal enlargement (megarectum); reduced rectal sensation; loss of the urge to defaecate; and eventually overflow soiling. The cycle becomes self-perpetuating without intervention. Key GP insight: the constipation usually started after a precipitating event (illness; toilet training; starting school; holiday). Identifying this event in the history reassures the family that there is not an organic cause and builds trust in the management plan.

Hirschsprung’s disease: red flag featuresHirschsprung’s disease (congenital aganglionic megacolon) is a rare but important cause of chronic constipation that must be excluded by the history. Features suggesting Hirschsprung’s (not idiopathic): onset from birth; failure to pass meconium within 48 hours of birth; constipation in the first month of life; enterocolitis (bloody diarrhoea; fever; abdominal distension — life-threatening emergency); absent anal wink; ribbon-like stools; failure to thrive. Hirschsprung’s is diagnosed by rectal suction biopsy (absence of ganglion cells in the submucosal plexus). Refers to paediatrics urgently. Contrast enema may show a transition zone. Treatment is surgical (Swenson; Soave; or Duhamel pull-through procedures). Never perform digital rectal examination in a child suspected of having Hirschsprung’s — risk of precipitating enterocolitis.

The Rome IV diagnostic criteria for childhood constipationRome IV criteria for functional constipation in children ≥4 years (at least 2 of the following for ≥1 month): (1) ≤2 defaecations per week in the toilet. (2) ≥1 episode of faecal incontinence per week. (3) History of retentive posturing or excessive voluntary stool retention. (4) History of painful or hard bowel movements. (5) Presence of a large faecal mass in the rectum. (6) History of large diameter stools that may obstruct the toilet. In infants and children <4 years: similar criteria adapted (infrequent stools; difficult; painful defaecation; hard stool). Bristol Stool Scale: educate parents — Types 1–2 (hard pellets; lumpy sausage) = constipated. Target: Types 3–4 (smooth sausage; soft). Types 5–7 = diarrhoea or overflow. The Bristol Stool Scale is a practical visual tool for parents to monitor stool consistency at home.

Maintenance laxatives: months to years, not daysOne of the most critical messages parents need to hear and accept: maintenance laxative therapy for childhood constipation typically needs to continue for months to years — NOT days. The rectal megarectum takes months to recover its normal tone and sensation after disimpaction. If laxatives are stopped prematurely (when the child is “having regular stools”), the rectal dysfunction has not yet resolved and constipation returns rapidly. NICE CG99: laxative therapy should continue until regular (daily or almost daily) normal stools are established for at least 1–3 months, and the child is having normal stools consistently without straining. Stepped-down gradually (not stopped abruptly). Relapse is common and should be framed to parents as expected — not a failure. Increase dose again at the first sign of recurrence; do not wait until severely impacted again.

Toilet training: 3 times daily after mealsToilet training (regular toileting schedule) is a cornerstone of constipation management alongside laxatives, yet is often underemphasised. The gastrocolic reflex is strongest for 20–30 minutes after a meal: encourage the child to sit on the toilet for 5–10 minutes 3 times daily, immediately after meals (especially after breakfast and the evening meal). Use a footstool to flex the hips (>90 degrees) — this straightens the anorectal angle and makes defaecation easier (mimic the squatting position). Reward systems (star charts): effective for children aged 2–7 years; praise and reward the behaviour (sitting on toilet; trying) rather than the outcome (producing stool). Never punish soiling accidents. Child-friendly explanation: “Your brain has forgotten how to tell you when your bottom needs to go — we are going to teach it again by practising at the same time every day.”

Overflow soiling: school impact is profoundOverflow soiling in school-age children causes profound social; psychological; and educational harm. Children who soil at school face: humiliation; social isolation; bullying; loss of confidence; refusal to attend school; and long-term psychological sequelae (anxiety; depression; poor self-esteem). Teachers may misinterpret soiling as laziness or “not trying”; parents may feel guilty, shamed, or accused of inadequate toilet training. The GP must address all of these dimensions explicitly. Key actions: provide a school letter explaining that soiling is a medical problem (overflow from constipation); not a behavioural issue; not the child’s fault; requires discrete access to a toilet and a change of clothes. The school nurse is a critical partner. For older children: emotional and psychological support alongside medical management.

📋 Clinical Stem — Constipation in Children

Josh Taylor, 6, brought by his mother with a 3-month history of overflow soiling at school; previously toilet-trained; now passing hard pellet stools every 5–7 days with occasional watery brown soiling; mother frustrated and upset

Josh Taylor, 6, is brought to the GP by his mother, Gemma, who is visibly distressed. Josh is in Year 2 and has been soiling at school for the past 3 months. Gemma reports that the soiling started after Josh had a stomach bug 4 months ago. Since then, he has been passing hard, pellet-like stools every 5–7 days and soiling his underwear almost daily with small amounts of liquid, foul-smelling stool. He is becoming reluctant to go to school and his teacher has commented that the smell is noticeable. Gemma says: “I don’t understand why he is doing this — he was completely toilet-trained before this. Is there something seriously wrong? And why does he have diarrhoea if he is constipated?” She has tried increasing his fruit and water intake with no improvement. His diet and weight are normal. Josh appears well but embarrassed. No blood in stool; no vomiting; no weight loss; no family history of bowel disease.

This stem tests: correct understanding of overflow soiling as a feature OF constipation (not diarrhoea); recognition of the precipitating event (gastroenteritis); disimpaction with high-dose macrogol (Movicol Paediatric Plain); maintenance laxative therapy framed as months not days; school letter; toilet training advice; parental guilt and frustration; and exclusion of organic causes (Hirschsprung’s; coeliac; hypothyroid). The SCA trap: advising Gemma to stop the laxatives because Josh has “diarrhoea” (the overflow soiling is the opposite of diarrhoea; stopping laxatives will worsen impaction).

Scenario A — Josh Taylor (6; overflow soiling; post-gastroenteritis; school impact) Classic functional constipation with overflow soiling. Disimpaction: Movicol Paediatric 4 sachets/day escalating to 12 sachets/day (age 5–11 years). Maintenance: step down to lowest effective dose for 3–6 months minimum. Explain overflow soiling to parents (liquid stool leaking around impacted mass). School letter. Toilet training (after meals; footstool; star chart). Review 4–6 weeks.

Scenario B — Toddler (2–3 years); toilet-training related constipation Constipation coinciding with toilet training. Very common — 1 in 3 toddlers during toilet training. Disimpaction if impacted (Movicol Paediatric 2 sachets/day escalating). Take pressure off toilet training temporarily. Footstool; potty not toilet initially. Star chart for sitting (not for producing stool). Reassurance to parents that this is extremely common. Maintenance: smallest effective dose for 6–12 months.

Scenario C — Red flags present (Hirschsprung’s; organic cause) Constipation since birth; failure to pass meconium in 48 hours; ribbon stools; failure to thrive; abdominal distension; poor growth. Hirschsprung’s: urgent paediatric referral; rectal suction biopsy. Hypothyroidism: TSH; FT4 (constipation with weight gain; goitre; bradycardia; cold intolerance). Coeliac disease: constipation can be a presentation (check tTG-IgA; total IgA). Never perform DRE if Hirschsprung’s suspected.

Scenario D — Infant (<1 year) with constipation Normal for exclusively breastfed infants to go up to 7 days between stools (soft; pasty stool = normal). Formula-fed: more frequent; firmer. Infant constipation (hard; dry; pellet stool; crying; straining): bath; gentle abdominal massage; bicycling legs; 30ml cooled boiled water between feeds. Avoid lactulose under 6 months (NICE CG99). Refer to paediatrics if: <1 month; red flags; failure to thrive. Lactulose: safe from 6 months; macrogol from 12 months (some prescribers use macrogol from 6–12 months — off-label; specialist guidance).

Scenario E — Parental concern about long-term laxative use Parent concerned that “long-term laxatives will make Josh addicted” or “will damage his bowel.” Key messages: macrogols (Movicol) are not absorbed; not addictive; act purely osmotically; no systemic effects. Lactulose: similarly not absorbed. No evidence of bowel damage from therapeutic laxative use. The risk of stopping too early is recurrence; reimpaction; and prolonged misery for the child. Laxatives are enabling the bowel to heal — not causing dependence.

Key variables to adapt for Age (infant vs toddler vs school-age vs adolescent); precipitating event (gastroenteritis; toilet training; starting school; holiday; stressful event; painful fissure); severity (infrequent stools only vs overflow soiling); school impact (soiling; social isolation; bullying; school refusal); parental emotional state (guilt; frustration; shame; denial); organic cause red flags (from birth; meconium; failure to thrive; ribbon stools; neurological signs; endocrine features); laxative compliance and dose (the most common cause of treatment failure is underdosing)

Steps:

Step 1

History — Stool Pattern · Precipitating Event · Overflow Soiling · Organic Causes · School & Family Impact

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The history in paediatric constipation has three objectives: (1) establish the stool pattern and severity; (2) identify the precipitating event; (3) screen for organic causes and explore the family’s understanding — especially the “why does he have diarrhoea if he is constipated?” question (overflow soiling explanation). The history must also assess the impact on Josh’s school life and Gemma’s emotional state — both need explicit attention.

🎓 SCA opener — address both Gemma’s distress and Josh’s embarrassment simultaneously

"Hello Josh — and hello Gemma. Josh, I can see you might feel a bit embarrassed coming in today — that is completely understandable. I want you to know that what you are dealing with is something that happens to lots of children, and it is definitely something we can help with. Gemma — I can see you are worried and frustrated, and I want to explain everything clearly so we can make a proper plan today."

The consultation involves a child AND a parent — the SCA examiner will note whether the GP addresses both. Josh’s embarrassment needs direct acknowledgement without making it worse. Gemma’s distress and confusion need validation. The tone must be warm; non-judgmental; and specific — generic “this is very common” without detail will not reassure a frustrated parent.

1A — Stool history and overflow soiling assessment

Question	Why it matters	Changes what?
🏲 OPEN QUESTION (to parent)"Tell me what has been happening — starting from when the problem began. How often is Josh passing a stool; what does it look like; and can you describe the soiling?"	The open question to Gemma establishes the full picture: stool frequency (every 5–7 days); stool consistency (hard; pellet-like — Bristol Stool Scale Type 1–2); overflow soiling (daily; liquid; foul-smelling — key features distinguishing overflow from gastroenteritis). The history of a precipitating event (gastroenteritis 4 months ago) is the key piece of information that confirms functional constipation and identifies the withholding cycle. Gemma’s question — “why does he have diarrhoea if he is constipated?” — is the central educational opportunity of the consultation.SCA: Tasks — overflow soiling explanation is a core teaching point; Relating to Others — acknowledge Josh’s embarrassment AND Gemma’s distress	Establishes: functional vs organic; severity (overflow soiling = impacted); precipitating event; school impact; parental understanding
Stool frequency and consistency"How often does Josh pass a proper stool? And when he does pass one — what does it look like? Hard pellets; long sausage; soft; loose?"	Normal stool frequency in children: 3×/day to 3×/week (wide range). Constipation is defined by: ≤2 stools/week in toilet; OR hard; pellet-like stools; OR painful defaecation; OR overflow soiling. Josh: every 5–7 days with hard pellets = clearly constipated. Bristol Stool Scale is a useful parent-education tool: Types 1–2 (constipated); Types 3–4 (ideal); Types 5–7 (loose/overflow). Using a visual chart (can be printed or shown on phone) makes stool assessment concrete and measurable at home. Ask Gemma to photograph stools or describe using the chart for future appointments — practical and non-embarrassing way to monitor progress.	Stool frequency ≤2/week + consistency type 1–2 + overflow soiling = functional constipation with impaction. Guides disimpaction dose (high-dose macrogol) + maintenance duration.
Overflow soiling — specifically characterise"Tell me about the soiling — is it in his underwear? What does it look like — liquid; solid; colour; smell? Does Josh know when it happens?"	Overflow soiling: liquid; foul-smelling; brown staining in underwear; child often unaware it has happened (loss of rectal sensation from chronic distension). Distinguished from diarrhoea by: concurrent constipation history; hard stool on abdominal exam; no fever; no blood; no vomiting; normal growth. The key explanation for Gemma: “Think of a blocked drain. The hard stool is blocking the pipes. The watery stool from higher up is leaking around the blockage — that is what you are seeing in his underwear. It is not diarrhoea — it is overflow from the constipation. The treatment is to clear the blockage — not to stop the laxatives.”	Overflow soiling confirmed: disimpaction is the immediate priority. Explain to parent: this is constipation, not diarrhoea. Stopping laxatives would make it worse.
Precipitating event"When did this start? Can you remember what was happening in Josh’s life at the time — a stomach bug; starting school; a holiday; any big changes?"	The precipitating event is the key to explaining the pathophysiology to parents and breaking the “why has this happened?” anxiety. Common precipitants: (1) Painful defaecation (anal fissure; hard stool during illness) → voluntary withholding to avoid pain. (2) Acute illness (gastroenteritis; change in diet; reduced intake; dehydration) → hard stool → pain → withholding. (3) Starting school or nursery — reluctance to use unfamiliar toilet; embarrassment. (4) Holiday — change in diet; routine; unfamiliar toilet. (5) Major life event (new sibling; bereavement; family change). Josh: gastroenteritis 4 months ago — classic precipitant. Identifying it: “The bug gave Josh a hard stool; that was painful; he learned to hold it in to avoid the pain; and now his bowel has got used to holding on.”	Precipitating event identified (gastroenteritis) → functional constipation confirmed. No precipitating event identified or onset from birth → organic cause screen required.
School and social impact"How is this affecting Josh at school? Has his teacher mentioned anything? Has Josh said anything about being teased or not wanting to go?"	School impact of overflow soiling: humiliation; bullying; social isolation; school refusal; loss of confidence; academic impact. Josh is reluctant to go to school — this is a safeguarding concern (prolonged school avoidance) as well as a wellbeing issue. A school letter from the GP is a specific and important action: “I understand Josh’s school has noticed the soiling. I will write a letter to the school explaining that this is a medical problem — overflow from constipation — not a behavioural issue, and not Josh’s fault. The school needs to be aware so they can provide discrete access to a toilet and a change of clothes without making Josh feel embarrassed.”	School letter: confirms medical cause; prevents behavioural attribution; requests discrete toileting support; names school nurse as contact. Essential action for any school-age child with overflow soiling.

1B — Red flags — organic causes requiring different management

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Red Flags — features suggesting organic (not functional) constipation

Red flag	Possible diagnosis	Action
Constipation from birth; failure to pass meconium within 48 hours	Hirschsprung’s disease (congenital aganglionic megacolon). Meconium normally passed within 48 hours in 99% of term neonates. Delayed passage = Hirschsprung’s until proven otherwise. Ribbon-like stools (narrow; thin) — reduced calibre due to narrow segment in anorectum. Never perform DRE — risk of precipitating enterocolitis (acute; life-threatening complication).	Urgent paediatrics referral — rectal suction biopsy; contrast enema; surgical pull-through
Constipation + failure to thrive; poor growth; weight loss	Hypothyroidism; coeliac disease; malignancy. Coeliac disease can present as constipation (less common than diarrhoea presentation; but well-described in children). Hypothyroidism: weight gain; constipation; cold intolerance; bradycardia; dry skin; delayed puberty.	TSH; tTG-IgA + total IgA (coeliac screen); FBC; coeliac screen; paediatrics if not explained
Abdominal distension; bilious vomiting; enterocolitis	Hirschsprung’s enterocolitis: life-threatening complication; blood diarrhoea; fever; abdominal distension; toxicity. Also consider: intestinal obstruction (other causes); inflammatory bowel disease (CD — abdominal pain; growth failure).	999 if enterocolitis / acute obstruction. Urgent paediatrics
Neurological signs; abnormal anal appearance; spinal abnormality	Spinal cord abnormality (sacral agenesis; spina bifida occulta; tethered cord): associated with constipation and bladder dysfunction. Absent anal wink (normal: contraction when perineum stroked). Gluteal abnormality; sacral pit; hairy patch overlying sacrum; lower limb neurological signs. Constipation + urinary incontinence in a child — consider neurogenic bowel/bladder.	Paediatrics; spinal MRI; urology/neurology
Possible physical or sexual abuse	Constipation and encopresis can be associated with physical or sexual abuse. Consider: unexplained bruising; anal findings inconsistent with constipation alone; history that does not add up; child’s behaviour change; fearfulness; age-inappropriate sexual knowledge. Refer to child safeguarding team if abuse is suspected.	Safeguarding referral; LADO; child’s social care

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Safeguarding — Constipation, Soiling, and Child Welfare

Paediatric constipation with overflow soiling carries significant safeguarding dimensions. Persistent soiling causes profound psychological harm to the child; inappropriate parental or school responses (punishment; shame; blame) can constitute emotional harm. The GP must actively assess these risks and intervene.

💕 Emotional harm risk

Children who are punished for soiling accidents (smacked; shamed; verbally abused) suffer significant emotional harm — the condition is not within the child’s control and punishment worsens it (increases withholding behaviour)
Assess: How does Gemma respond when Josh soils? How do school staff respond? Is Josh being bullied?
If punitive responses identified: non-judgmental education; CAMHS referral if significant psychological impact; social care if child protection concern

📸 Sexual abuse screening

Constipation and encopresis (soiling) can be associated with sexual abuse; particularly if: history inconsistent; anal findings not explained by constipation; child’s fear or behaviour change; age-inappropriate sexual behaviour
Any concerning anal findings on examination: do NOT perform DRE; refer to paediatrics for examination under anaesthetic if needed; document carefully
Safeguarding referral (children’s social care) if abuse is suspected; do not delay referral pending “more evidence”

💻 School refusal risk

Josh is becoming reluctant to attend school — this is an early school refusal trajectory. Prolonged school non-attendance has profound consequences for education; socialisation; and mental health
School letter (GP) + school nurse involvement are urgent actions — not optional extras
If school refusal is established: CAMHS referral; education welfare officer; multi-agency meeting

🧑️ Parental wellbeing

Gemma is visibly distressed and frustrated. Sustained carer stress in the context of a child’s chronic condition can escalate to inadequate care — Gemma needs support alongside Josh’s treatment
PHQ-9 (parental depression) if Gemma appears significantly overwhelmed. Single parent? Social support? Who else is helping?
Reinforce: this is not Gemma’s fault; not Josh’s fault; this is a treatable medical condition

Actions: Assess for punishment at home or school; ask specifically about Josh’s emotional state (bullying; feelings about soiling); school letter to prevent further humiliation; school nurse contact; CAMHS referral if significant psychological impact; parental support offered.

1C — PMH; dietary history; drug history; family history

🥐 Dietary history & contributing factors

Factor	Why it matters	Impact
Fluid intake — amount and type	Inadequate fluid intake is commonly associated with hard stool. However: in established functional constipation with impaction, fluid alone rarely resolves the problem. Excessive cow’s milk (especially in toddlers: >300ml/day) is associated with constipation (milk displaces high-fibre foods; iron-fortified formula may contribute). Josh: Gemma has already increased fruit and water — acknowledge the effort; explain why laxatives are still needed (the impacted mass needs mechanical clearance).	Fluid: adequate (1–1.5L/day for a 6-year-old). Reduce cow’s milk if excessive (>300ml/day). Dietary changes alone insufficient for established impaction.
Fibre intake	Age + 5 grams of fibre per day (UK recommendation): a 6-year-old needs approximately 11g/day. Fruits (pears; prunes; kiwi); vegetables; wholegrain bread; oats; beans. However: in established impaction, dietary change alone is insufficient — the bowel is stretched and unresponsive; macrogol is needed first. Dietary fibre is important for long-term maintenance once disimpaction is achieved; not the first-line acute treatment.	High-fibre diet: important for maintenance; not sufficient for acute disimpaction. Prunes; kiwi; pears: evidence for promoting stool softening. Avoid: excessive banana; white rice; processed foods (constipating).
Cow’s milk protein allergy (CMPA)	A subset of children with chronic constipation respond to cow’s milk elimination (particularly toddlers with CMPA who have not been formally diagnosed). Clinical features suggesting CMPA contribution to constipation: constipation in an infant (especially if also eczema; asthma; atopic features; family history); failure to respond to standard laxative treatment. Trial: cow’s milk protein elimination diet (under dietitian guidance) for 2–4 weeks if CMPA suspected — but not routinely in all children with constipation.	Suspected CMPA + constipation not responding to laxatives: dietitian referral; CMPA elimination trial. Not routinely in all children; specific clinical suspicion required.

💊 Drug causes and family history

Factor	Constipation relevance	Action
Drug causes of constipation in children	Iron supplementation (common and significant — switch to alternate-day dosing or iron-rich diet if tolerated). Opioids (codeine; morphine — severe constipation; manage with macrogol from day 1). Antihistamines (anticholinergic effect). Antidepressants/antipsychotics (tricyclics; clozapine). Calcium channel blockers. Ondansetron (given for vomiting; causes constipation in approximately 50% of children). If Josh is on iron for anaemia: this is likely contributing significantly — review need; switch to liquid iron or dietary approach if possible.	Iron: review need; switch to alternate-day or food sources if possible; add macrogol from day 1 of iron treatment. Opioids: macrogol prophylactically. Ondansetron: alert prescribers to constipation risk.
Family history of bowel disease	Hirschsprung’s: familial in 5–10% of cases. Inflammatory bowel disease (Crohn’s; UC): can present as constipation in children (constipation-predominant IBD is less common but real). Coeliac disease: 10% familial risk. If positive family history: lower threshold for blood tests (coeliac screen; inflammatory markers; calprotectin).	Family history IBD or coeliac: lower threshold for investigation. Family history Hirschsprung’s: paediatric assessment even if features not classic.

1D — ICE (parent and child)

💡 Ideas (Gemma)

"Gemma — can I ask what you think is causing this? And Josh — what do you think is happening with your tummy?"

Gemma’s model: she does not understand overflow soiling — she thinks Josh has diarrhoea AND constipation simultaneously, which is confusing. She may think: inadequate toilet training; lazy child; attention-seeking behaviour; something “wrong” with his bowels. Josh’s model: he is embarrassed and probably thinks it is his fault. Both need their illness models addressed — separately and in age-appropriate language for Josh. Key for Gemma: the “blocked drain” analogy (hard stool blocking the drain; liquid leaking around it) makes overflow soiling intuitive and comprehensible.

😟 Concerns (Gemma)

"What worries you most about this? Is there something you are particularly concerned might be causing it?"

Gemma’s concerns: Is there something seriously wrong (cancer; Hirschsprung’s; inflammatory bowel disease)? Will laxatives cause long-term harm? Is this her fault for not doing toilet training well enough? Is Josh going to be like this forever? Addressing each specifically: (1) Red flags excluded by history — reassure. (2) Laxatives are safe; not addictive; not absorbed. (3) This is not her fault; precipitated by the gastroenteritis. (4) Functional constipation is almost always completely resolved with correct treatment — prognosis is excellent.

🎯 Expectations

"What were you hoping we could do today? What would ‘sorted’ look like for you and Josh?"

Gemma expects: an explanation (the “why”); a treatment plan that works (what she tried didn’t work); and a school letter. She may also be hoping for a quick fix — the expectation management about treatment duration (months not days) must be honest and framed positively (“this will work — but it takes time; and stopping too early is the most common reason it comes back”). Josh: he wants the soiling to stop so he can go to school without being embarrassed.

1E — Psychosocial context

💕 Josh’s emotional experience

At 6 years old, Josh has enough social awareness to know soiling is embarrassing but not enough understanding to explain it or control it. He may: believe it is his fault; feel shame; avoid social activities; develop anxiety about going out or being away from home. His teacher’s comment about the smell has almost certainly reached his awareness and deepened his shame.

"Josh — I want to tell you something important. This is not your fault. Your tummy got stuck after the bug you had, and your bottom has been doing the leaking without asking you. The medicine we are going to give you will fix that — and pretty soon you will not have to worry about it at school anymore."

👤 Gemma’s experience

Gemma has been managing soiling underwear for 3 months; fielding complaints from school; and trying dietary interventions that have not worked. She is frustrated; possibly sleep-deprived; possibly being blamed (implicitly or explicitly) by school staff for inadequate parenting. The GP must explicitly exonerate her.

"Gemma — I want to be clear: you have not caused this. This started with the bug Josh had; it is a medical problem, not a parenting problem. And the fact that you noticed and came in quickly is exactly the right thing."

🏫 School as a partner

The school is crucial. A teacher who understands overflow soiling will provide discrete toilet access; a change of clothes; and non-punitive handling of accidents. A teacher who doesn’t understand it will shame the child, worsening the anxiety that drives withholding. The school nurse is the key professional link — the GP should copy the school nurse into any school letter.

"I will write to Josh’s school today explaining that this is a medical condition — not a behavioural problem — and asking them to make sure Josh can get to the toilet discreetly and has a change of clothes available."

📈 Duration of treatment

The single biggest cause of treatment failure is stopping laxatives too early. Parents (understandably) stop when stools normalise — but the rectal megarectum has not yet recovered. The laxatives are enabling the recovery; removing them before recovery = relapse. Frame positively: “The laxatives are doing for Josh’s bowel what a splint does for a broken bone — holding it in the right position while it heals. Once it has healed fully — after several months — we can slowly take the splint away.”

"I need to warn you: this treatment takes months, not days. If you stop the laxatives when Josh starts having normal stools, it will almost certainly come back — because his bowel needs time to recover. I will see you regularly to adjust the dose."

🎓 SCA Checkpoint — Step 1TasksRelating to OthersGlobal Skills

Overflow soiling explanation — the key teaching moment

"Gemma — can I explain the ‘watery stuff’ you are seeing in Josh’s underwear? Think of it like a blocked drain. There is a big, hard mass of stool stuck in Josh’s bowel — that is the blockage. The liquid stool from higher up can’t get past the blockage, so it leaks around the sides and comes out in his underwear. That is not diarrhoea — it is actually a sign that he is MORE constipated, not less. The treatment is to clear the blockage — not to stop the laxatives."

"Josh — your bottom has been doing a little leak without telling you, because the hard stuff inside is squeezing the liquid out. The medicine is going to help clear that out so your bottom works normally again."

Deductions

Not explaining overflow soiling — Gemma’s central question (“why diarrhoea if constipated?”) is unanswered; she cannot implement the treatment plan without this understanding
Advising Gemma to stop laxatives because of the “diarrhoea” — this is the most dangerous management error in paediatric constipation

🔴 Red

Overflow soiling not explained; laxatives advised to stop for “diarrhoea”; no disimpaction plan; no school letter; Josh not addressed directly; Gemma’s guilt not addressed; organic red flags not screened; treatment duration not explained

🟠 Amber

Overflow soiling explained; disimpaction started; treatment duration not explained; school letter not offered; Josh not addressed; Gemma’s guilt not acknowledged; dose not escalating correctly; review not booked

🟩 Green

Josh addressed directly (age-appropriate; non-blame); Gemma exonerated; overflow soiling explained (blocked drain analogy); precipitating event identified; red flags excluded; disimpaction: high-dose Movicol Paediatric (escalating); maintenance months not days; toilet training (after meals; footstool; star chart); school letter offered; Bristol Stool Scale; review 4–6 weeks; closing question

Step 2

Triage — Emergency (Enterocolitis) · Urgent (Hirschsprung’s) · GP-Managed Functional

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Most childhood constipation is GP-managed. The triage question: is there an emergency (Hirschsprung’s enterocolitis; obstruction); is there an organic cause requiring investigation or referral; or is this functional idiopathic constipation (90% of cases)? Josh: functional — GP-managed.

🔴 Emergency

Hirschsprung’s Enterocolitis / Obstruction

999 / Same-day paediatrics

Enterocolitis (Hirschsprung’s)Bloody diarrhoea; fever; abdominal distension; toxic — 999
Intestinal obstructionBilious vomiting; absolute constipation; distension — 999

🟠 Urgent

Suspected Organic Cause

Paediatric referral; bloods

Hirschsprung’s featuresOnset from birth; meconium >48h; ribbon stools; failure to thrive — urgent paediatrics
Failure to thrive + constipationCoeliac; hypothyroid — blood tests; paediatrics if not explained
Neurological or spinal signsTethered cord; sacral abnormality — paediatrics; MRI spine

🟩 GP-managed — Josh

Functional Idiopathic Constipation

NICE CG99 stepwise

Functional constipation with overflow soiling (Josh)Disimpaction: high-dose Movicol Paediatric; maintenance months; toilet training; school letter; 4–6 week review
Mild functional constipation; no soilingDietary advice; fluid; low-dose macrogol maintenance; toilet training; review 6–8 weeks

🎓 SCA Checkpoint — Step 2Tasks

Functional vs organic distinction

"I want to ask a few important questions to make sure this is the usual type of constipation — and not something rarer. Did Josh have any problems passing his first stool after he was born? Has there ever been blood in his stool? Is his growth normal? Any problems with his walking or bladder?"

Deductions

Not screening for Hirschsprung’s (meconium; onset from birth) — while unlikely in Josh (aged 6 with a clear precipitant), the screen must be documented

Step 3

Examination — Abdominal Palpation · Perianal Inspection · Growth · Anal Wink

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Abdominal palpation to identify a faecal mass (confirms impaction and guides disimpaction urgency). Perianal inspection for fissure; skin tags; abnormal appearance. Digital rectal examination (DRE) is NOT routinely indicated in children and should NEVER be performed if Hirschsprung’s is suspected.

Examination	What it shows	Management impact	Changes?
Growth parametersWeight; height; BMI centile; growth chart	Normal growth: reassures against organic cause (Hirschsprung’s; coeliac; hypothyroid; IBD — all commonly associated with failure to thrive or poor growth). Josh: normal diet and weight — supports functional diagnosis. Plot on UK-WHO growth chart: if weight or height falls below 0.4th centile or crosses 2 centile lines: investigate (blood tests; paediatrics).	Normal growth: functional diagnosis supported; no investigation required initially. Failure to thrive: investigate (coeliac screen; TFTs; coeliac; IBD screen) and paediatric referral	YES — poor growth changes diagnosis from functional to organic requiring investigation
Abdominal palpationSupine; systematic; faecal masses in left iliac fossa; sigmoidal loading; mobile; indentable	Faecal loading: palpable faecal mass in left iliac fossa (LIF) — the classic site of the sigmoid colon and rectum in children. Features: mobile (unlike tumour); indentable (finger pressure leaves an impression — doughy consistency); non-tender (usual) or mildly tender. Severe loading: masses may extend into transverse colon. The presence of a palpable faecal mass confirms significant impaction and indicates disimpaction is required (not maintenance dose alone). Abdominal distension; tenderness; rigidity: acute abdomen — emergency referral.	Palpable faecal mass: disimpaction required (high-dose macrogol — escalating). No palpable mass: maintenance dose macrogol. Severe distension or rigidity: surgical emergency	YES — palpable faecal mass determines disimpaction vs maintenance approach
Perianal inspectionPosition; skin tags; fissures; fistulae; soiling; anal appearance; perineal sensation	Anal fissure: a painful linear tear at the anal verge — the most common reason a child starts withholding (one painful defaecation initiates the cycle). If fissure present: soft stools (macrogol) are the treatment — both therapeutic (heals the fissure) and preventive (prevents further painful defaecation). Skin tags; fistulae: Crohn’s disease must be considered. Abnormal anal position; appearance: Hirschsprung’s; structural abnormality. Absent perineal sensation (S2-4 dermatome): neurogenic cause. Anal wink (normal): gentle touch of perianal skin → reflex sphincter contraction. Absent: sacral nerve abnormality.	Fissure: soft stools (macrogol) + lidocaine 5% gel (lubricating; analgesic; use cautiously — not routinely for children; specialist guidance). Skin tags; fistulae: Crohn’s screen (calprotectin; CRP; albumin; paediatric referral)	YES — fissure: treat to enable painless defaecation; skin tags/fistulae: Crohn’s investigation
DRE — NOT routinely indicated in childrenNEVER if Hirschsprung’s suspected	Digital rectal examination (DRE) in children: NICE CG99 states DRE should only be performed by a specialist after informed consent; training; and appropriate environment. In primary care: DRE is NOT indicated for routine assessment of childhood constipation. Risk: trauma; distress; distorted anal examination findings; risk of enterocolitis if Hirschsprung’s. If rectal assessment needed: abdominal USS (identifies faecal loading; rectal distension) is preferable in primary care to DRE. NEVER perform DRE if Hirschsprung’s disease is suspected (risk of precipitating toxic enterocolitis).	DRE: NOT in primary care for routine constipation. If needed: paediatric assessment. USS if rectal assessment needed. Hirschsprung’s suspected: refer urgently; DRE absolutely contraindicated	YES — DRE contraindicated in primary care; Hirschsprung’s = absolute contraindication

🎓 SCA Checkpoint — Step 3TasksRelating to Others

Examination communication

"Josh — I would like to have a feel of your tummy — just a gentle press to see what is going on inside. Is that OK? You can keep your T-shirt on if you like and just lift it up. It might feel a bit funny but it shouldn’t hurt."

Deductions

Performing DRE on Josh in primary care — NICE CG99: DRE is not routinely indicated in primary care for childhood constipation; requires specialist setting; trained examiner; informed consent; and must never be done if Hirschsprung’s is a possibility

Step 4

Investigations — When to Blood Test · Abdominal USS · Coeliac Screen · TFTs

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Routine blood tests are NOT required for functional constipation with a clear precipitating event and normal growth (NICE CG99). Blood tests are indicated when: organic cause is suspected (poor growth; red flags); laxative treatment fails; or Hirschsprung’s features are present.

Investigation	When indicated	Result and action
No investigations for Josh — functional constipation; clear precipitant; normal growthNICE CG99: investigations not routinely required for idiopathic constipation	Josh has: clear precipitating event (gastroenteritis); typical clinical features (hard stools; overflow soiling; normal growth; child well); no red flags (normal birth history; passed meconium normally; growing well). Investigation is not required before starting treatment. Investigations in the absence of red flags or treatment failure: delay treatment; cause unnecessary distress for the child; and have low yield. NICE CG99: investigations should be considered only if: organic cause suspected; treatment fails after adequate trial; unusual features present.	No investigations needed today. If failing to respond to disimpaction after 4–6 weeks: consider abdominal X-ray (confirms faecal loading if clinical uncertainty); USS (rectal distension). If growth concern: coeliac screen + TFTs + FBC.
Coeliac screen — if poor growth; diarrhoea alternating; family historytTG-IgA + total IgA; or EMA IgA if total IgA normal	Coeliac disease can present with constipation (less common than classical diarrhoea presentation; but a recognised variant). Screen if: constipation + poor growth; anaemia; mouth ulcers; dermatitis herpetiformis; family history of coeliac. tTG-IgA most sensitive (95% sensitivity); must always check total IgA (IgA deficiency in 2–3% of coeliacs — tTG-IgA falsely negative if IgA deficient; use deamidated gliadin peptide IgG if IgA deficient). Child must be eating gluten at time of testing (do NOT advise gluten-free diet before testing).	tTG-IgA >10×ULN + positive EMA: paediatric gastroenterology referral (diagnosis may not require duodenal biopsy in children at this titre level). Borderline: repeat in 3 months on gluten-containing diet; gastroenterology opinion. Normal: coeliac excluded.
TFTs (TSH; fT4) — if clinical features of hypothyroidismWeight gain; cold intolerance; bradycardia; goitre; dry skin; delayed puberty; constipation	Hypothyroidism is a cause of constipation at any age. In children: additional features of growth failure; delayed puberty (older children); dry skin; lethargy; cold intolerance. TSH is the most sensitive screen — elevated TSH indicates primary hypothyroidism. Josh has normal growth and no systemic features — TFTs not indicated today. Congenital hypothyroidism: detected by neonatal screening (Guthrie card at 5 days — part of NHS newborn blood spot screening programme).	TSH elevated: confirm with fT4; levothyroxine; paediatric endocrinology if confirmed. Constipation resolves with adequate thyroid replacement. TSH normal with constipation: thyroid excluded; continue constipation management.
Abdominal X-ray — NOT routinely; only if clinical uncertaintyConfirms faecal loading; not required when history and examination are diagnostic	Abdominal plain X-ray: identifies faecal loading throughout the colon; confirms impaction severity. NICE CG99: not recommended routinely for diagnosis of constipation — the diagnosis is clinical (history + examination). Indications: uncertain diagnosis after clinical assessment; monitoring response to treatment (if clinical assessment insufficient — e.g. obese child where abdominal palpation unreliable); pelvic/abdominal pathology suspected. Note: radiation dose is a consideration in children — AXR is not a benign investigation; avoid unless clinically indicated.	AXR showing faecal loading: confirms diagnosis; use clinically (not for reassurance). If AXR shows dilated bowel; fluid levels; free air: emergency surgical referral. Perform only if clinical uncertainty after full assessment.

🎓 SCA Checkpoint — Step 4Tasks

No investigations for Josh

"Gemma — for Josh, I don’t think we need blood tests today. The picture is very clear: the problem started after his stomach bug; his growth is completely normal; and he has no features that suggest any other condition. The most important thing now is to start the right treatment — not to wait for tests."

Deductions

Ordering a battery of blood tests for classic functional constipation with a clear precipitant and normal growth — this delays treatment and causes unnecessary anxiety without clinical benefit

Step 5

Diagnosis — Functional Constipation with Overflow Soiling · Plain Language · DDx

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The diagnosis in this consultation is functional constipation with overflow soiling. The diagnostic conversation must explain: (1) why it happened (precipitating event — the gastroenteritis); (2) what is happening now (withholding cycle; impaction; overflow); (3) what the treatment is; (4) why it takes months not days.

🗣️ Explaining to Gemma — and to Josh in age-appropriate language

To Gemma: "Josh has what we call functional constipation — which means his bowel has got into a stuck pattern. It started with the tummy bug 4 months ago. During the bug, he probably had a hard; uncomfortable stool, and his brain learned: ‘that was painful — don’t do that again.’ So without even realising it, he started holding the stool in. The longer it stays in, the harder it gets; and the harder it gets, the more uncomfortable it is to pass. So he holds it in even more. That becomes a cycle. The lump of hard stool that is now sitting in his lower bowel is too big for him to pass comfortably. The liquid stool from higher up is leaking around it — that is what you are seeing in his underwear. It is not diarrhoea — it is actually overflow from the constipation. It sounds strange; but it is a sign that the constipation is quite established."

To Josh: "Josh — you know how a pipe can get blocked? Your bottom has got a bit blocked up after your tummy bug. The medicine we are going to give you is really good at clearing that out — a bit like a drain cleaner for your tummy, but completely safe. It means your bottom will go back to working the way it used to. And we are going to practise a special toilet routine to help it remember what to do."

💬 Addressing key questions

"Is there something seriously wrong with his bowels?"
"No — nothing seriously wrong. His growth is normal; his bowels are structurally completely normal. This is a pattern problem, not a structural one. The pattern started after the bug and we are going to break the cycle with the right treatment."

"Will the laxatives make it worse or cause dependence?"
"No — and this is important. The laxative we are using is called Movicol. It works by drawing water into the bowel — it is not absorbed into the body; it does not cause dependence or addiction; and it does not damage the bowel. It is simply allowing the bowel to empty properly while it recovers. A bit like a physiotherapy aid — it is helping the bowel get back to normal."

Josh’s Diagnosis

GP-managed; NICE CG99

Functional idiopathic constipation with overflow soiling. Age 6. Precipitant: gastroenteritis 4 months ago. Stool frequency: every 5–7 days; Type 1–2. Daily overflow soiling. School impact (reluctance to attend). Normal growth. No red flags. Plan: disimpaction (Movicol Paediatric Plain; escalating dose); maintenance laxatives 3–6 months minimum; toilet training; school letter; 4–6 week review.

Differential — Excluded

Hirschsprung’s disease

Excluded: Josh was well as a neonate; passed meconium normally; constipation onset in middle childhood after a clear precipitant; growing normally.

Coeliac disease

Excluded today: normal growth; no anaemia; no family history. Screen if failing laxative treatment or growth falters.

Do Not Miss

Overflow soiling treated as diarrhoea

The most common clinical error: stopping laxatives because of “diarrhoea”. The soiling IS the constipation. Stopping laxatives worsens impaction.

Underdosing macrogol — treatment failure

Most common reason for failure. Disimpaction requires HIGH doses (up to 12 sachets/day for age 5–11). Maintenance dose is lower. Dose must be titrated by effect.

🎓 SCA Checkpoint — Step 5TasksRelating to Others

Diagnosis explanation

"Josh has what we call functional constipation. It started with the tummy bug — that gave him a hard uncomfortable stool; and his brain learned to hold it in to avoid the pain. The longer he held it in, the harder it got. The leaking you are seeing in his underwear is liquid stool from higher up, leaking around the blocked part — overflow, not diarrhoea. This is a very common problem in children; it is completely treatable; and it is not your fault and not Josh’s fault."

Deductions

Not explaining the pathophysiology (the withholding cycle; the impaction; the overflow) — Gemma cannot implement the treatment plan or maintain it for months without this understanding

Step 6

Referral — Paediatrics · CAMHS · Dietitian · School Nurse

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Most functional constipation is GP-managed. Referral is triggered by: organic cause suspected; failure to respond to adequate GP treatment; significant psychological impact (school refusal; CAMHS); or complex social circumstances.

Referral	Urgency	Indications	What NOT to do
Paediatrics — specialist	Routine (if not responding to GP treatment); urgent if organic cause	Not responding to adequate disimpaction + maintenance laxatives for 3–6 months. Organic cause suspected (Hirschsprung’s; coeliac; thyroid). Failure to thrive. Complex encopresis (deliberate soiling; psychological cause). Infant <12 months with significant constipation. Rectal prolapse. Anal abnormality. Biofeedback therapy consideration (specialist-initiated).	Do NOT refer routinely before an adequate trial of GP treatment (disimpaction + maintenance + toilet training). The majority of cases resolve in primary care with the right treatment.
CAMHS — psychological support	Routine — if significant psychological impact	Significant anxiety; school refusal; depression related to soiling. Deliberate soiling (without constipation — different aetiology; may represent psychological distress; abuse). Encopresis with complex family dynamics. Josh: if school refusal becomes established; CAMHS referral alongside medical management.	Do NOT refer to CAMHS in isolation without adequate medical treatment — most overflow soiling resolves with disimpaction; the psychological sequelae resolve as the medical problem resolves.
School nurse — not a referral; a partnership	Immediate — school impact requires same-week contact	GP school letter (today; immediate) explaining: overflow from constipation; not behavioural; not the child’s fault; discrete toilet access needed; change of clothes provision. School nurse can: monitor at school; liaison with class teacher; provide educational resource for staff; support star chart implementation. Josh: school letter today — this is as urgent as the laxative prescription.	Do NOT allow the school to treat soiling as a behavioural issue without GP clarification — the humiliation this causes worsens the constipation cycle.
Dietitian — if CMPA suspected or nutritional concerns	Routine	Cow’s milk protein allergy (CMPA) contributing to constipation (especially toddlers; atopic features; not responding to laxatives). Nutritional concerns (restricted diet; autism spectrum; ARFID — avoidant restrictive food intake disorder). High-fibre dietary advice for maintenance. Josh: not indicated today (normal diet; normal growth).	Do NOT advise a gluten-free diet or cow’s milk elimination without dietitian support — risks nutritional inadequacy in a child.

🎓 SCA Checkpoint — Step 6TasksRelating to Others

School letter — framing it positively

"I am going to write to Josh’s school today. The letter will explain that what Josh is experiencing is a medical condition called overflow soiling — the leaking is caused by the constipation, not by any behavioural problem. The school needs to know this so they can make sure Josh can get to the toilet discreetly, and that he has a change of clothes available without any fuss being made. This should make a real difference to how Josh feels about going to school."

Deductions

Not offering a school letter — Josh’s reluctance to attend school is a safeguarding and wellbeing issue that the school letter directly addresses; omitting it leaves a major gap

Step 7

Management — Disimpaction · Maintenance Laxatives · Toilet Training · School Letter · Bristol Stool Scale

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7A — Address Gemma’s expectations: why this will be different from what she has tried

🤝

Gemma has tried dietary changes that have not worked — explain why; give a specific multi-component plan; set honest expectations about duration

Validate — what she tried was sensible; just not sufficient

Increasing fruit and water was a reasonable first step. It is insufficient for established impaction because the hard mass is too large to be moved by dietary change alone.

"The things you tried — more fruit and water — were the right instinct. The problem is that by the time we see overflow soiling, the blockage is too established for diet alone to clear. We need a medicine that specifically clears it out."

Explain — the two-phase plan: disimpaction then maintenance

Phase 1 (disimpaction; 2 weeks): high-dose Movicol to clear the impacted mass. Phase 2 (maintenance; 3–6 months+): lower dose to prevent re-impaction while the bowel recovers.

"We have a two-part plan. First — for about 2 weeks — we use a higher dose of the powder to clear the blockage. That is the disimpaction phase. Once that is done, we use a lower dose for several months to keep the stools soft while Josh’s bowel recovers. And alongside the medicine: a toilet routine and a star chart."

Negotiate — the single most common mistake: stopping too early

Maintenance laxatives must continue for months. When Gemma sees Josh having normal stools, she will be tempted to stop. She must not.

"The most important thing I want you to remember is this: when Josh starts having normal soft stools — probably within a few weeks — please don’t stop the medicine. That is the most common mistake. His bowel needs months to fully recover. We reduce the dose gradually; we don’t stop it suddenly."

7B — Treatment goals

Treatment goals

Disimpaction complete — soft stools (Bristol Type 4) daily within 2 weeksOverflow soiling ceases Maintenance: regular soft stools (daily or almost daily) for 3–6 monthsToilet routine established (3×/day post-meals; footstool; star chart) School attendance: Josh attends school without fear of soilingSchool letter sent; school understanding improved Gradual laxative dose reduction over 6–12 months; not abrupt stoppingReview at 4–6 weeks; monthly until maintenance established

Motivational language

"This is very treatable — and most children with Josh’s type of constipation get completely back to normal with the right plan. It takes time and consistency, but the medicine does the heavy lifting."

"Josh — in a few weeks your bottom should be working much better. The powder in the drink is going to help clear it all out, and then we are going to help your bottom remember when it needs to go."

7C — Non-medication management (essential alongside laxatives)

📌

Toilet Training (Scheduled Toileting)

3 times daily after meals; 5–10 min; footstool; not longer (boredom → avoidance)

Why after meals?

The gastrocolic reflex is strongest 20–30 minutes after eating — the bowel contracts in response to stomach filling. Exploiting this reflex maximises the chance of successful defaecation. Times: after breakfast; after lunch if possible; after evening meal. Duration: 5–10 minutes only — not longer (children lose attention; sitting too long becomes aversive). Footstool: feet flat on footstool with knees above hips (squatting position; straightens the anorectal angle; makes defaecation easier). For Josh: after breakfast and after evening meal as minimum (lunch at school may not be feasible).

If Josh avoids the toilet (anxiety)

Do not force or pressurise. If toilet anxiety is significant: start with just sitting on the toilet (not trying to produce anything); reward sitting. Progress: sitting → trying → producing. Some children prefer a potty initially if the full toilet feels too big. Let Josh control the process — remove parental anxiety from the toilet interaction.

Scheduled toileting maximises the gastrocolic reflex; reduces withholding; 3× daily post-meal routine is evidence-based (NICE CG99)

⭐

Star Chart (Reward System)

Reward BEHAVIOUR (sitting; trying); not outcome (producing stool); age 2–8 years most effective

How to implement correctly

Star charts: reward the process; not the product. Josh gets a star for: sitting on the toilet after a meal (regardless of whether he produces). He does NOT get stars or praise ONLY for producing a stool — this creates performance anxiety. Stars accumulate to a small reward (sticker; extra screen time; a trip; a small toy). Rewards should be immediate (same day) and predictable — delayed gratification is difficult for young children. Never withdraw stars for soiling accidents — positive reinforcement only; no punishment. Star chart template: available from ERIC (Education and Resources for Improving Childhood Continence — eric.org.uk).

When star charts stop working

Star charts are most effective age 2–8 years. Older children: may find star charts babyish or humiliating — adapt the reward system to age (privileges; activities; money for older children). Some children with autism spectrum disorder or other neurodivergence respond differently — occupational therapy; CAMHS.

Reward systems improve toilet training compliance; effective age 2–8 years; reward behaviour not outcome

📈

Bristol Stool Scale for Home Monitoring

Type 1–2 = constipated; Types 3–4 = target; Types 5–7 = too soft (reduce dose)

How to use

Give Gemma a Bristol Stool Scale chart (available on ERIC website; NHS leaflets; printable from any GP computer). Josh should be aiming for Types 3–4 (smooth sausage; soft and fluffy with edges). If stools are Type 1–2 (hard pellets; cracked sausage): increase macrogol dose by 1 sachet every 2 days until stools soften. If Types 5–7 (loose; watery; overflow): do NOT interpret as diarrhoea and stop — it is the overflow clearing; continue laxatives; if true diarrhoea (concurrent viral illness; watery all stools; no impaction): brief pause; GP advice.

Practical advice

Gemma: check stool type every time Josh uses the toilet during disimpaction. Record on a chart. Bring the chart to the review appointment. This objectifies the treatment response and gives Gemma a measurable target. App available: Bristol Stool Chart apps for parents. Purpose: to prevent the most common error — stopping laxatives when the stool becomes Type 5–7 (loose) during disimpaction (this is the expected and correct response).

Bristol Stool Scale prevents over- and under-dosing; gives parents a concrete target; prevents “diarrhoea” laxative stoppage

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School Letter — Medical Documentation

Explains overflow as medical; not behavioural; requests discrete toilet access + change of clothes

What the letter must say

Josh Taylor; Date of birth; Year 2 at [School]. Diagnosis: functional constipation with overflow soiling. This is a medical condition. The soiling is caused by liquid stool leaking around an impacted mass — it is not a behavioural problem; not deliberate; and not within Josh’s control. He is under medical care and receiving treatment. Requests: (1) Discrete access to the toilet at all times — without restriction to break/lunch only. (2) A change of clothes kept at school without fuss. (3) Any soiling accidents handled discreetly and without drawing attention from peers. (4) School nurse involvement. ERIC can provide support for schools. Copy to: school nurse; SENDCo if additional support needed.

Without the letter

Without a school letter: Josh’s teacher may restrict toilet access; peers may bully; staff may discipline for soiling accidents. All of these worsen the withholding behaviour (fear of using the toilet = more holding in). The school letter is not optional — it is a clinical intervention.

School letter reduces school-based humiliation; improves toilet access; prevents disciplinary responses to soiling

🍵

Diet and Fluid

Age + 5g fibre/day; 1–1.5L fluid/day; reduce cow’s milk if >300ml/day (toddlers)

Diet in established impaction

Dietary advice alone is insufficient for established impaction (NICE CG99): macrogol is required first. Once disimpaction is achieved: diet supports maintenance. High-fibre foods: fruits (pears; prunes; kiwi); vegetables; wholegrain bread; oats; beans; lentils. Daily fibre target: age + 5g (6-year-old: approximately 11g). Daily fluid: 6–8 glasses (1–1.5 litres) of water or low-sugar juice. Reduce: banana; white rice; white bread; processed food (constipating). Prunes; kiwi: evidence-based for softening stool — prune juice or whole prunes; 2 kiwi fruit daily in studies reduces constipation in adults and children.

Cow’s milk (toddlers)

Excessive cow’s milk (>300ml/day in toddlers): displaces high-fibre foods from diet; associated with constipation. If toddler consumes >300ml cow’s milk/day: reduce; increase water and high-fibre solid foods.

Diet: supports maintenance; not sufficient for acute impaction. Prunes and kiwi have RCT evidence for constipation relief.

💋

Parental Education & Reassurance

Not the parents’ fault; not Josh’s fault; treatment works; months not days; relapse is common and expected

Key messages

1. Not Gemma’s fault. Not Josh’s fault. The gastroenteritis started it — Gemma did not cause the constipation. 2. The laxatives are safe and not addictive. 3. This will take months — not days. 4. Relapse is common — if the stools get hard again, increase the dose (do not wait for full impaction to return before acting). 5. Do NOT stop laxatives when stools normalise — the most common error. 6. Come back to us at any point — we will adjust the dose. 7. ERIC website (eric.org.uk): excellent parent-facing resources; parent helpline; school resources.

Never punish soiling

Punishing soiling (smacking; shaming; withdrawal of privileges; anger) is counter-productive and constitutes emotional harm. If punishment is occurring: non-judgmental education; if persistent and causing psychological harm — CAMHS referral; social care if safeguarding threshold met.

Parental education reduces laxative non-compliance and premature stopping — the leading cause of relapse

7D — Prescribing guide

Josh (age 6; overflow soiling = impacted): Disimpaction — Movicol Paediatric Plain 4 sachets/day → increase by 2 every 2 days to maximum 12 sachets/day. Each sachet dissolved in 62.5ml water (quarter glass). Continue until stool is soft and regular (Bristol Type 3–4); then step down to maintenance dose (1–2 sachets/day as a starting point; adjust by effect). If disimpaction not achieved after 2 weeks: review; consider adding senna or lactulose; check compliance and dose; paediatric referral if still failing.

Phase 1: Disimpaction (2 weeks)

Age 2–5: start 2 sachets/day → increase by 2 sachets every 2 days → max 8 sachets/day
Age 5–11 (Josh): start 4 sachets/day → increase by 2 sachets every 2 days → max 12 sachets/day
Age ≥12: use adult Movicol (Laxido) 4 sachets → max 8 sachets/day
Dissolve each sachet in 62.5ml water (a quarter of a standard mug)
Can be split into multiple doses throughout the day (morning; midday; evening)
Can be mixed with diluted juice to improve palatability
Can be chilled to reduce osmotic effect on taste

Underdosing is the most common cause of disimpaction failure. Always escalate to the maximum dose if lower doses are not working.

Phase 2: Maintenance (months)

After disimpaction: step down to 1–2 sachets/day (adjust by effect)
Target: Bristol Type 3–4 (smooth sausage; soft and fluffy); daily or almost daily
Duration: minimum 3–6 months; often 12 months or longer
Never stop abruptly — step down by 1 sachet per month when stable
If stools harden again: step UP immediately (do not wait for full re-impaction)
Alternative: senna (Senokot) syrup — stimulant laxative; second-line; can add to macrogol if insufficient
Lactulose: osmotic laxative; safe; less effective than macrogol in established constipation; useful in infants

Most common error: stopping maintenance when stools normalise. The bowel has not yet recovered.

What NOT to do

Do NOT stop laxatives when stools become loose — this is overflow clearing; continue; adjust dose
Do NOT start maintenance dose without disimpaction first (in an impacted child)
Do NOT use phosphate enemas in primary care for children — specialist setting only (risk of electrolyte disturbance)
Do NOT advise fluid and fibre alone for established impaction — insufficient
Do NOT perform DRE in primary care

The two-phase plan (disimpaction then maintenance) is the NICE CG99 standard; do not collapse them into a single low-dose prescription.

7E — Decision aid

Select age and presentation for laxative guidance

Child 5–11 years with overflow soiling (impaction — Josh) Mild constipation; no overflow (maintenance from outset) Toddler (2–5 years) Infant (<12 months) Red flags present — possible organic cause Relapse after laxative course

Laxative management guidance

Child 5–11 with overflow soiling (Josh): Disimpaction — Movicol Paediatric Plain 4 sachets/day → increase by 2 sachets every 2 days → max 12 sachets/day. Each sachet in 62.5ml water. Once stool soft and regular (Bristol Type 3–4): step down to maintenance 1–2 sachets/day. Continue minimum 3–6 months. Mild constipation (no overflow): start maintenance dose 1–2 sachets/day; adjust by effect; continue 3–6 months. Toddler (2–5): disimpaction — 2 sachets/day → increase to max 8 sachets/day. Infant (<12 months): avoid macrogol under 12 months unless specialist guidance; lactulose 2.5ml BD (from 6 months; adjust); bath; massage; bicycle legs; 30ml cooled boiled water between formula feeds. Red flags: coeliac screen (tTG-IgA + total IgA); TSH; FBC; paediatric referral. Never macrogol in Hirschsprung’s suspected — refer urgently; DRE absolutely contraindicated. Relapse: re-disimpact (escalating dose again); do not use maintenance dose on a re-impacted child; ensure Gemma understands not to stop again until GP advises.

7F — Drug reference cards

Movicol Paediatric Plain (Macrogol 3350)

Movicol Paediatric Plain · Laxido Paediatric · OsmoLax · Disimpaction: escalating dose · Maintenance: 1–2 sachets/day · NICE CG99 first-line · Not absorbed; not addictive

✓ First-line — disimpaction and maintenance; NICE CG99; osmotic; not absorbed; not addictive

First-line; osmotic; NICE CG99 — disimpaction AND maintenanceDisimpaction (5–11 years): 4 sachets/day → max 12 sachets/day (escalate every 2 days). Maintenance: 1–2 sachets/day

✓ Mechanism and advantages

Macrogol 3350 (polyethylene glycol) is an osmotic laxative: it retains water in the bowel lumen by osmosis → softens stool → stimulates peristalsis. Not absorbed systemically; not metabolised; not addictive; no systemic effects. Safe for prolonged use in children (NICE CG99 supports long-term use). Palatability: can be mixed with water (slightly salty taste); diluted apple juice; orange squash; or any diluted soft drink. Can be chilled or served at room temperature. Movicol Paediatric Plain is the correct formulation for children (lower electrolyte content per sachet than adult Movicol; appropriate for age). Disimpaction: prescribed as a 2-week escalating course. Maintenance: long-term prescription; review dose monthly. Can be prescribed as “Macrogol 13.8g sachets for paediatric constipation — as directed.”

✗ Key risks: underdosing; stopping too early

The two most important errors: (1) Underdosing during disimpaction — prescribing 2 sachets/day for a 10-year-old with severe impaction and not escalating to 12 sachets/day means the impaction is not cleared. Macrogol is one of the safest drugs in medicine — escalate boldly. (2) Stopping maintenance laxatives when stools normalise — the most common reason for relapse. The rectal megarectum has not recovered. Laxatives continue until the GP decides to step down. Never tell parents to “stop when he is better.” Specific instruction: “Continue until I tell you to stop; never stop yourself without checking with us first.”

⚠ Practical prescribing

BNFC dose confirmation: Child 5–11 years disimpaction: Day 1: 4 sachets; Day 3: 6 sachets; Day 5: 8 sachets; Day 7: 10 sachets; Day 9: 12 sachets (max). Once soft regular stool achieved: step down to maintenance (lowest effective dose — typically 1–2 sachets/day). Prescription: 1–2 sachets per day for the initial prescription; with a note to increase as per the written disimpaction plan. Alternatively: provide a written dose schedule. ERIC leaflet: downloadable dose schedule for parents — give this at every consultation.

🔬 Monitor

Bristol Stool Scale at home (Gemma records stool type daily during disimpaction). Review at 4–6 weeks: has disimpaction occurred? Stool type? Overflow soiling resolved? If not resolved: has the dose been escalated to maximum? If maximum dose reached and not disimpacted: paediatric referral. Monthly reviews during maintenance. Annual review: can we begin step-down? Reduce by 1 sachet/month when stable.

💬 For Gemma

"The powder is called Movicol. You dissolve each sachet in about 62ml of water — roughly a quarter of a glass. It can be mixed with diluted juice if Josh doesn’t like the taste. We are starting with 4 sachets a day; and if after 2 days his stools haven’t softened, you increase to 6; then 8; then 10; then 12 at the most. I am giving you a written chart to follow. The most important rule: do NOT stop the medicine when Josh starts going more often — that is the clearing working. The liquid in his underwear may get worse briefly as the blockage clears — that is normal. Keep going."

Movicol Paediatric Plain: NICE CG99 first-line; osmotic; not absorbed; not addictive. Disimpaction: escalating dose (4→12 sachets/day for 5–11 years). Maintenance: 1–2 sachets/day for months. Most common errors: underdosing disimpaction; stopping maintenance when stools normalise. SCA: explaining why laxatives are safe (not addictive; not absorbed) and why treatment takes months — key parental counselling points.

Senna (Stimulant Laxative) — Second-Line Addition

Senokot syrup (7.5mg/5ml) · Senna tablets · Stimulant laxative · Second-line — add to macrogol if insufficient · Age ≥2 years (syrup)

✓ Second-line — add to macrogol if disimpaction incomplete; stimulant; ages ≥2 years

Second-line — add if macrogol alone insufficient for disimpactionSenokot syrup: 2.5–5ml OD–BD (age 2–6 years); 5–10ml OD–BD (age 6–12 years). Titrate by effect.

✓ Role in constipation management

Senna is a stimulant laxative (anthraquinone): acts on the Auerbach’s plexus → stimulates peristalsis. Onset: 8–12 hours. Use: when macrogol alone is insufficient for disimpaction; as an addition (not replacement) to macrogol. Particularly useful when the colon has reduced motility (chronic constipation). NICE CG99: stimulant laxatives can be used as adjuncts to osmotic laxatives if needed. Safe from age 2 years (syrup formulation). Senna should generally not be used alone for maintenance — combine with osmotic laxative (macrogol or lactulose) for best effect.

✗ Side effects

Abdominal cramping (especially at high doses — start low; increase gradually). Discolouration of urine (pink; red — benign; warn parents). Do not use in suspected obstruction (stimulant peristalsis against an obstruction = perforation risk). Long-term use of stimulant laxatives alone may theoretically reduce colonic motility over time — always combine with osmotic agent for maintenance. Not recommended under 2 years (macrogol preferred if available; specialist guidance).

🔬 Monitor

Abdominal cramping: reduce dose if cramping is severe. Stool type (Bristol Scale): target Type 3–4. Urine colour: reassure parents that pink/red urine is normal. If no improvement after 2–4 weeks of combined senna + macrogol: paediatric referral.

💬 Counselling

"We are going to add another medicine called senna to the Movicol to give the bowel an extra push. It works about 8–12 hours after taking it, so give it in the evening and it will work by morning. Josh’s wee might turn a pinkish colour — that is completely harmless and just the medicine coming through. And he might have some tummy cramping — if that is very uncomfortable, let us know and we can adjust the dose."

Senna: second-line stimulant laxative; add to macrogol if disimpaction incomplete; safe from 2 years (syrup); abdominal cramping at high doses; pink urine is benign — warn parents. SCA: if Josh is not responding to macrogol alone — adding senna (not just increasing macrogol dose further) demonstrates knowledge of stepwise management.

Lactulose — Osmotic Laxative (Infants & Adjunct)

Lactulose 3.35g/5ml oral solution · Safe from 6 months · Less effective than macrogol for established constipation · Useful in infants and as adjunct

✓ Infants (from 6 months) and adjunctive use — less effective than macrogol for established impaction

Infants from 6 months; adjunct in older children if macrogol poorly toleratedInfant 1 month–1 year: 2.5ml BD. Child 1–5 years: 2.5–10ml BD. Child 5–18 years: 5–20ml BD. Adjust every few days.

✓ Role and mechanism

Lactulose is an osmotic laxative: non-absorbable disaccharide → draws water into the bowel → softens stool; stimulates colonic bacteria to produce gas (which also stimulates peristalsis). Onset: 48–72 hours (slower than macrogol). Advantages: very safe; cheap; liquid formulation easy to give to infants. Disadvantages: less effective than macrogol for established constipation in older children; gassy (bloating; flatulence); sweet taste may be rejected by older children. For Josh: macrogol is preferred (NICE CG99 first-line). Lactulose: useful for infants from 6 months; as an adjunct when macrogol is not tolerated; or in mild constipation.

✗ Not recommended under 6 months

NICE CG99: lactulose not recommended under 6 months. Infants under 6 months with constipation: non-pharmacological (bath; massage; bicycle legs; 30ml cooled boiled water between feeds for formula-fed infants). If under 6 months and not responding: paediatric referral. Sugar content: relevant for diabetic patients (usually not an issue in the children seen for constipation; but note if relevant).

💬 Counselling

"Lactulose is a syrup — it softens the stool by drawing a bit of water into the bowel. It takes 2–3 days to work, so don’t expect an immediate result. It can make the tummy a bit gassy — that is normal. The dose goes up every few days if the stools are not soft enough."

Lactulose: safe from 6 months; osmotic; less effective than macrogol for established constipation; useful in infants and as adjunct. Not first-line for Josh (macrogol preferred at age 6 with overflow soiling). SCA: knowing that lactulose is the appropriate choice for infants from 6 months while macrogol is preferred for older children demonstrates age-specific prescribing knowledge.

Bisacodyl Suppositories — Rectal Disimpaction (Specialist)

Bisacodyl 5mg suppositories · Specialist use only · Rectal clearance · Manual evacuation under anaesthetic (rare) · Never routine primary care

✗ Specialist use only — rectal clearance in paediatric setting; never routine primary care

Specialist only — when oral macrogol disimpaction fails; paediatric settingSpecialist-directed only — not for primary care initiation

✓ When used

Bisacodyl suppositories or glycerol suppositories: stimulate rectal contraction; used for short-term rectal disimpaction when oral laxatives have failed. In children: only in a specialist paediatric setting; with appropriate consent; trained personnel. Manual evacuation under general anaesthetic: rarely required; severe refractory impaction; paediatric surgery team. Phosphate enemas: previously used for disimpaction in children; now not recommended in primary care due to electrolyte disturbance risk (paediatric setting only if required). GP role: refer to paediatrics if oral macrogol disimpaction fails after 4–6 weeks at maximum doses.

✗ Never in primary care for children

Bisacodyl suppositories; phosphate enemas; and manual evacuation are NOT appropriate in primary care for children with constipation. Risk: rectal trauma; pain; psychological trauma; electrolyte disturbance (phosphate enemas). These are specialist paediatric interventions. If child requires rectal intervention: refer to paediatrics.

💬 If parents ask about “suppositories or enemas”

"Those are tools that can be used by the specialist team if the oral medicine doesn’t work well enough — but we don’t use them in GP. The medicine I am prescribing — the Movicol — is very effective when used at the right dose, and I want to give it a proper trial first. If after 4–6 weeks it hasn’t worked, I would refer Josh to the paediatric team who can assess what else might help."

Bisacodyl suppositories / phosphate enemas: specialist paediatric setting only; never primary care. Knowing NOT to use rectal interventions in primary care is as important as knowing what the oral management is. SCA: demonstrating that rectal interventions are specialist-only while confidently prescribing oral macrogol = clinical depth mark.

Iron — Constipating Drug; Management in Children Needing Iron

Ferrous fumarate · Sodium feredetate (Sytron) · Iron polymaltose · Constipation in up to 30% · Alternate-day dosing strategy · Add macrogol prophylactically

✓ Iron causes constipation; add macrogol from day 1; alternate-day dosing reduces side effects

Co-prescribe macrogol from day 1 of iron supplementation in at-risk childrenIron as prescribed; add Movicol Paediatric 1–2 sachets/day from day 1. Alternate-day iron reduces constipation without compromising absorption.

✓ Iron and constipation

Iron supplementation causes constipation in approximately 25–30% of children (stools darken; harden). Mechanism: unabsorbed iron irritates the gut; alters gut microbiome; reduces stool water content. Management strategies: (1) Add macrogol from day 1 of iron treatment (prophylactic); (2) Alternate-day iron dosing (reduces side effects; evidence shows similar absorption with alternate-day vs daily dosing); (3) Switch to liquid iron formulation (sodium feredetate — Sytron; better tolerated GI than ferrous fumarate); (4) Dietary iron sources if mild deficiency and diet can be corrected (red meat; beans; fortified cereal; dried fruit). If child develops constipation on iron: do not just manage the constipation — review the need for iron and the dosing schedule.

✗ Other drug causes of constipation to know

Ondansetron (given for nausea/vomiting — causes constipation in approximately 50% of children; ensure parents are aware when prescribing for gastroenteritis — add laxative prophylactically or advise on this risk). Opioids (codeine; morphine — severe constipation; prescribe macrogol from day 1 alongside opioid). Antihistamines (anticholinergic — mild constipating effect). Antacids (calcium-containing — mild constipating).

💬 Counselling — iron + laxative co-prescription

"Iron is great for fixing the anaemia but it does tend to make stools harder and darker — and in some children it can cause constipation. To prevent that from happening, I am going to give you a sachet of Movicol to give alongside the iron — starting from day 1. The iron can also make the poo look very dark — almost black — which is completely normal and not blood. If you see bright red blood in the stool, that would be something to report immediately."

Iron causes constipation in approximately 30% of children — add macrogol prophylactically from day 1. Alternate-day iron dosing reduces side effects. Ondansetron (for gastroenteritis): constipation in 50% — warn parents or co-prescribe laxative. SCA: asking about medications (including iron; antihistamines) when taking a constipation history demonstrates awareness of drug-induced constipation.

School Letter — Clinical Documentation (Not a Drug)

GP letter to school · Explains overflow soiling as medical · Not behavioural · Discrete toilet access · Change of clothes · School nurse partnership · ERIC resources for teachers

✓ School letter: as urgent as the laxative prescription for school-age children with overflow soiling

Immediate action — same consultation; same day as laxative prescription for school-age child with soilingNot a drug — but as clinically important as the prescription

✓ What the school letter achieves

The school letter transforms Josh’s school experience. Without it: teachers may restrict toilet access (“wait until break”); soiling accidents may be handled publicly; peers may become aware and bully; Josh’s school avoidance will worsen; his anxiety about soiling at school will perpetuate the withholding cycle. With it: discrete toilet access (Josh can leave class to use the toilet without explanation); spare clothes available without fuss; staff understand this is medical not behavioural; reduced risk of bullying; reduced school avoidance. The letter should: state the medical diagnosis; state that this is not under Josh’s control; state that punishment or public responses are harmful; request specific accommodations; copy in the school nurse (who provides ongoing support and monitoring). ERIC resources for teachers: free downloadable teacher guides at eric.org.uk.

✗ What happens without the school letter

Without the school letter: teachers who don’t understand overflow soiling may: restrict toilet access; publicly respond to accidents; use terminology that draws attention; communicate with parents in a way that increases shame. All of these worsen Josh’s withholding behaviour (more shame = more avoidance = harder stools = more impaction = more overflow). The school letter is a clinical intervention — not optional paperwork. Draft at the consultation; send same day or next working day.

🔬 School nurse as partner

The school nurse can: provide ongoing monitoring of Josh’s school-based bowel care; help implement the star chart in school; liaise between GP; parents; and teachers; provide educational resources for the class teacher; and alert the GP if school-based issues are affecting management. ERIC (eric.org.uk): national charity providing resources for schools; teachers; and parents on childhood continence conditions. Recommend to Gemma AND to the school.

💬 Telling Gemma about the school letter

"I am going to write to Josh’s school today. The letter will explain that what Josh is experiencing is not his choice — it is a medical condition caused by constipation. The school needs to know this so they can make sure he can get to the toilet whenever he needs to without any fuss, and that he has a spare set of clothes. I will copy the school nurse into the letter so they can also support him. This should make a real difference to how Josh feels about going to school — and reducing that worry about school will also help with the constipation itself."

School letter: as important as the laxative prescription for Josh. Immediate action. Explains medical cause; requests discrete access; change of clothes; school nurse involvement. SCA: not offering a school letter for a school-age child with overflow soiling affecting school attendance = major gap; Tasks and Relating to Others marks. The school letter demonstrates understanding of the biopsychosocial model of illness.

7G — Psychosocial management summary

🧑️

Paediatric constipation is a family illness — Josh’s soiling affects his self-esteem; school life; and peer relationships; and Gemma’s exhaustion and frustration require direct acknowledgement and practical support

Functional constipation with overflow soiling is not “just a bowel problem.” Its consequences span: Josh’s psychological wellbeing; his educational progress; his social development; his relationship with his own body; Gemma’s stress and parenting confidence; and the school environment. Each of these requires attention alongside the laxative prescription.

💕

Josh’s Psychological Wellbeing

6 years old; becoming reluctant to attend school; probably experiencing shame and social anxiety. Direct age-appropriate reassurance: “this is not your fault; the medicine will fix it; it happens to lots of children.” Star chart reward system. Involve Josh in choosing his reward — increases engagement and ownership.

"Josh — I want to tell you: none of this is your fault. Your tummy got stuck after the bug. The medicine is going to help unstick it — and then we’re going to practise a special routine so your bottom remembers when it needs to go."

👤

Gemma’s Guilt and Exhaustion

Three months of managing soiling; school complaints; failed dietary interventions; and watching her child become distressed. She needs: explicit exoneration (not her fault); explanation (overflow soiling mechanism); specific plan (not generic reassurance); and ongoing GP support (regular review appointments; she is not being left alone to manage this).

"Gemma — I want to be clear. You have not caused this. The bug started it; and the diet changes you tried were the right instinct — they just weren’t enough for how established the blockage has become. That is exactly why you came to us."

🏫

School Environment

School letter immediately. School nurse as partner. ERIC teacher resources. Remove the shame from the school environment — because shame worsens withholding. Once Josh feels safe at school (toilet access; change of clothes; no public incidents), his anxiety will reduce; his willingness to defaecate will improve; and the constipation cycle will be easier to break.

"The school letter is not just paperwork — it is a treatment. Once the school understands this is medical; Josh should feel much safer at school; and that will help the medicine work too."

📈

Realistic Expectations — Months Not Days

Treatment will work — but it takes months. Gemma must understand this before she leaves today. Not understanding treatment duration is the single biggest cause of non-compliance and relapse. The bowel needs time to recover its normal tone and sensation after months of impaction.

"I need to warn you — this medicine needs to keep going for months, not just until Josh is regular again. When he starts going normally, his bowel is still healing. Stopping too soon is the most common reason it comes back."

💡

Relapse is Normal and Manageable

Relapse — stool hardening again after a period of improvement — is common (50–60% of children relapse at least once). Frame this as expected; not a failure. Give Gemma permission to increase the dose at the first sign of relapse; not to wait until the full impaction returns.

"If Josh’s stools start getting hard again at any point — even after months of being fine — don’t wait. Increase the dose straight away and call us. Don’t wait until we get back to where we are now."

🏠

ERIC — Parent and School Resource

ERIC (Education and Resources for Improving Childhood Continence; eric.org.uk): the UK’s leading charity for childhood bladder and bowel conditions. Free parent guides; dose charts; Bristol Stool Scale; star chart templates; school resource packs; helpline (0845 370 8008). Recommend at every consultation with a family managing childhood constipation.

"There is a website called ERIC — E-R-I-C — eric.org.uk. They have leaflets for you; dose charts for the medicine; star chart templates; and information to give to Josh’s school. I recommend everyone with a child going through this uses it."

7H — Follow-up

Today — disimpaction prescription; school letter; toilet training; ERIC

Movicol Paediatric Plain: disimpaction escalating dose (starting 4 sachets/day; written schedule given). Bristol Stool Scale chart given. Star chart discussed. Toilet training: after breakfast + evening meal; footstool; 5–10 minutes; reward sitting. School letter: written today; copy to school nurse. ERIC website recommended. Overflow soiling explained to Gemma (blocked drain analogy). Review booked at 4–6 weeks.

Review appointment booked before they leave

4–6 weeks — disimpaction check; dose adjustment; school update

Has disimpaction occurred? Stool type (Bristol Scale)? Overflow soiling resolved? School: is Josh attending more comfortably? Has school received and acted on the letter? Dose: does it need adjusting? Moving to maintenance dose? Toilet routine: established? Star chart working? Any anxiety about toileting? If not disimpacted: escalate dose further; add senna; consider paediatric referral if maximum doses failing.

Stool type; soiling; school; dose; toilet routine; Bristol Scale diary

Monthly (maintenance phase) — dose adjustment; compliance

Monthly review during maintenance phase (or phone appointment if doing well). Stool type: still Type 3–4? Dose: lowest effective dose? Relapse: any hardening? If hardening: immediately increase dose. Compliance: is Gemma giving the correct dose? Is Josh taking it? Palatability issues? Can mix with diluted juice.

Monthly maintenance review; dose; compliance; relapse action plan

3–6 months — sustained normal stools; begin dose reduction?

If: regular soft stools (Type 3–4) for at least 3 months; no soiling; Josh comfortable and attending school — consider step-down. Reduce by 1 sachet/month (not abrupt stopping). If relapse during step-down: return to previous effective dose; try again in 3–6 months. Not all children can stop laxatives at this stage — some require 12–24 months of maintenance.

Begin dose reduction if stable 3 months; reduce 1 sachet/month; relapse safety-net

Paediatric referral — if not responding to optimal GP treatment

If: maximum dose macrogol + senna for 4–6 weeks; no disimpaction; overflow soiling continuing — paediatric referral. Paediatrics will: assess for organic cause; biofeedback; specialist laxative regimen; rectal interventions if needed. CAMHS if significant psychological impact; school refusal established; deliberate encopresis (not overflow).

Paediatric referral if failing 4–6 weeks optimal treatment; CAMHS if school refusal

7I — Monitoring — POOP mnemonic

POOP monitoring mnemonic for paediatric constipation

Passage frequency and consistency (Bristol Stool Scale; target Types 3–4). Overflow soiling resolving? School attendance and wellbeing. Optimal dose maintained (not stopped prematurely; escalating if needed). Precipitant identified and cycle broken (toilet training; star chart; school letter).

Parameter	Monitor	Timing	Action
Stool type (Bristol Stool Scale)	Type 3–4 target; Type 1–2 = increase dose; Types 5–7 = overflow clearing or excess dose; reduce if true excess	Daily (parent records) during disimpaction; weekly during maintenance	Type 1–2 persisting: increase dose. Do NOT stop if Type 5–7 during disimpaction — this is the overflow clearing.
Overflow soiling frequency	Decreasing after disimpaction; should cease when disimpaction complete	Daily (parent records); review at 4–6 weeks	Soiling persisting at 4–6 weeks: not disimpacted; escalate dose; paediatric referral if maximum dose reached and still soiling.
School attendance and wellbeing	Is Josh attending school? Is anxiety about school/soiling improving?	4–6 weeks	School refusal established: CAMHS referral; education welfare; school nurse escalation.
Laxative compliance and dose	Is Gemma giving the correct dose? Is Josh taking it? Has she stopped prematurely?	Every review	Dose stopped without GP advice: re-educate; re-prescribe; re-start disimpaction if re-impacted.

Milestone	Action
4–6 weeks	Disimpaction check; stool diary review; school update; dose adjustment; toilet routine check
Monthly (maintenance)	Dose; compliance; relapse; Bristol Scale; school
3 months	Consider step-down if stable; 1 sachet/month reduction; relapse plan
Paediatric referral	If not disimpacted at 4–6 weeks on maximum doses + senna; or organic cause suspected; or school refusal

7J — Safety-netting

⚠ Three critical safety-nets

Documentation requirements

Diagnosis documented: “Functional constipation with overflow soiling; precipitant: gastroenteritis 4 months ago”

Organic cause screen documented: “No red flags (Hirschsprung’s; coeliac; thyroid); passed meconium normally; normal growth; no systemic features”

Disimpaction prescription: Movicol Paediatric Plain escalating dose; written schedule given; verbal and written explanation of overflow soiling provided

Overflow soiling explained to parent: “overflow soiling explained as symptom of constipation; not diarrhoea; parent advised NOT to stop laxatives if overflow worsens during disimpaction”

School letter: sent today to [school name]; copied to school nurse; content includes medical explanation; toilet access request; change of clothes provision

Toilet training advice given; star chart discussed; Bristol Stool Scale chart provided; ERIC website recommended; 4–6 week review booked

999 / A&ESevere abdominal distension; bloody diarrhoea; fever; very unwell (enterocolitis)

Call usStool becomes very watery (dose adjustment needed); relapse (increase dose and call)

4–6 weeksDisimpaction review; school update; dose adjustment; toilet routine check

🎓 SCA Checkpoint — Step 7 (Final)TasksRelating to OthersGlobal Skills

Closing the consultation

"Let me pull together the plan. Josh has functional constipation — the blockage started with the tummy bug; and the leaking in his underwear is overflow from the constipation, not diarrhoea."

"I am prescribing Movicol — a powder you dissolve in water. We start at 4 sachets a day and increase gradually to clear the blockage. I am giving you a written chart. The most important rule: do NOT stop it when Josh starts going normally — his bowel needs months to recover."

"Alongside the medicine: a toilet routine — 5–10 minutes on the toilet after breakfast and after dinner; feet on a footstool; and a star chart. I am also going to write to Josh’s school today."

"Josh — none of this is your fault. The medicine is going to clear everything out and then your bottom will be back to working normally. And your school is going to understand and help you. Before we finish — is there anything you want to ask me?"

Deductions

Overflow soiling not explained — Gemma cannot implement or maintain the plan without this
Advising to stop laxatives because of “diarrhoea” — most dangerous management error
Prescribing maintenance dose for an impacted child (not disimpaction first)
Not addressing Josh directly — child must be included in the consultation
Not offering school letter — a specific and critical clinical action
Stopping laxatives “when better” without specifying months of maintenance

Tasks summary

Overflow soiling explained (not diarrhoea)
Disimpaction dose (4→12 sachets/day escalating)
Maintenance months not days
Red flags screened (Hirschsprung’s; organic)
Toilet training (post-meal; footstool; star chart)
School letter offered and written

Relating to Others

Josh addressed directly (age-appropriate; non-blame)
Gemma exonerated (not her fault)
Overflow soiling mechanism explained
ERIC website recommended
Relapse normalised

🔴 Red

Overflow soiling not explained; laxatives stopped for “diarrhoea”; maintenance dose prescribed without disimpaction; Josh not addressed; no school letter; no toilet training advice; no ERIC; review not booked; Hirschsprung’s not screened

🟠 Amber

Overflow explained; disimpaction started; maintenance plan not specific (months); school letter not offered; Josh not addressed; star chart not discussed; Bristol Stool Scale not given; 4–6 week review not booked; ERIC not recommended

🟩 Green

Josh addressed directly (non-blame; age-appropriate); Gemma exonerated; overflow explained (blocked drain analogy); precipitating event identified; red flags screened; high-dose disimpaction (escalating); maintenance months not days; toilet training (3×/day post-meal; footstool; star chart); Bristol Stool Scale; school letter offered + written; ERIC website; not stop when better; relapse plan; 4–6 week review; closing question to both Josh and Gemma

[Gemma speaks; Josh sits quietly beside her] “Hi — I have brought Josh in because he has been having accidents at school for about 3 months now. He is passing stools very infrequently — about once a week — but he also has these watery, runny accidents in his underwear. His teacher has commented that the smell is noticeable and he doesn’t want to go to school anymore. I tried giving him more fruit and water but it’s not helping. I don’t understand — how can he be constipated if he is also having these runny accidents?”

Who you are (Gemma)

Gemma Taylor, 35, single mother. Josh is 6; Year 2. Works part-time. Josh had gastroenteritis 4 months ago; since then infrequent hard stools (once per week; pellet-like) and daily overflow soiling. He was fully toilet-trained before. School has sent home 3 notes about the soiling in the past month. Josh is reluctant to go to school. Gemma has tried increased fibre and fluids; no laxatives yet. Worried: is something seriously wrong? Are laxatives safe long-term?

Who you are (Josh)

Josh: 6 years old. Shy; embarrassed. Will only respond if spoken to directly; in age-appropriate language. If the GP speaks kindly directly to him: “My tummy hurts sometimes when I try to go to the toilet.” If asked about school: “I don’t like going to school because the other children can smell it and it is embarrassing.” If told the medicine will help: relief visible on face.

Gemma’s hidden agenda — disclose if space created

Concern about laxatives (disclose if asked): “I am worried about giving him laxatives for months — won’t that make him dependent on them or damage his bowel?” Respond well to: “Movicol is not absorbed; cannot cause addiction; and is not damaging the bowel — it is enabling the bowel to heal.”

Concern about diagnosis (disclose if asked): “Could it be something more serious — could there be something structurally wrong with his bowels?” Respond well to red flag exclusion and clear positive diagnosis of functional constipation.

School guilt (disclose if space): “His teacher said he needs to try harder to make it to the toilet — I feel like I’m being blamed for this.”

Responses to key moments

If GP explains overflow soiling (blocked drain): “Oh — so the runny stuff IS the constipation? I had no idea. I was thinking of stopping the laxatives because of it.” Respond with relief to the explanation.
If told laxatives are safe: “How long do we need to give them for?” (sets up duration discussion)
If school letter offered: “Oh, could you? That would make such a difference — his teacher doesn’t seem to understand why it is happening.”
Challenge: “How long is this going to take? I just want it sorted quickly.”

"How long is this going to take? His teacher is already making comments and he really doesn’t want to go to school. Is there anything quicker?"

Ideal GP response: “I completely understand the urgency — especially with the school situation. The medicine will start working within days and Josh should be having softer stools quite quickly. The soiling should reduce as the blockage clears — that will help school immediately. But the full treatment — to make sure it doesn’t come back — does take months, not weeks. I know that is not what you want to hear, but stopping too early is the main reason it comes back. The school letter today will also make a big difference — once the school understands this is medical, they should handle things very differently.” Gemma: “OK — I feel much better understanding why it is happening. Thank you for being so clear about it.”

🏥

Clinic Quick Reference

Constipation in Children — Clinical Decision Framework

NICE CG99 · Overflow soiling ≠ diarrhoea · Movicol disimpaction (escalating) · Maintenance months · Toilet training · School letter · Red flags · ERIC

▼expand

💊 1 — Constipation Triage Algorithm

Child with constipation → Screen red flags (organic) → Functional: disimpaction then maintenance → Ongoing: toilet training + school + ERIC

🔴 Emergency / Urgent Organic

Enterocolitis (bloody diarrhoea; fever; distension; toxicity) → 999
Hirschsprung’s features: onset from birth; no meconium 48h; ribbon stools; FTT → urgent paediatrics; NEVER DRE
Obstruction (bilious vomiting; absolute constipation; distension) → 999

999 or urgent paediatrics

🟠 Investigate / Refer

Failure to thrive + constipation: coeliac screen (tTG-IgA); TSH; FBC
Neurological signs; absent anal wink; sacral abnormality: MRI spine; paediatrics
Not responding to 4–6 weeks maximum dose: paediatric referral
Significant psychological impact; school refusal: CAMHS

Bloods + paediatric/CAMHS referral

🟩 GP-managed (Josh)

Functional; clear precipitant; normal growth: disimpaction (high-dose Movicol) then maintenance months
Mild functional (no overflow): maintenance dose from outset
Infant (6–12 months): lactulose; bath; massage; bicycle legs

NICE CG99 stepwise; school letter; ERIC

📊 2 — Key Clinical Numbers

Overflow soiling ≠ diarrhoea

Liquid stool leaks around impacted mass. Stopping laxatives = worsening impaction. Explain: “blocked drain” analogy. Continue laxatives.

Do NOT stop laxatives when better

Most common cause of relapse. Maintenance needed for 3–6 months minimum after disimpaction. Step down gradually; do not stop abruptly.

Disimpaction: 4→12 sachets/day (5–11 years)

Start 4 sachets/day; escalate by 2 sachets every 2 days to max 12 sachets/day. Each sachet in 62.5ml water. Underdosing is the most common cause of failure.

Never DRE in primary care for children

NICE CG99: DRE not routinely indicated. Specialist setting only. Absolute contraindication if Hirschsprung’s suspected (enterocolitis risk).

Functional = 90–95% of cases

Clear precipitant: painful stool; illness; toilet training; school; holiday. Withholding cycle → impaction → overflow.

Bristol Scale Types 3–4 = target

Types 1–2: increase dose. Types 3–4: maintain. Types 5–7 during disimpaction: overflow clearing; continue. Types 5–7 during maintenance: reduce dose.

Toilet training: 3×/day post-meal

Gastrocolic reflex. Footstool (squatting angle). Star chart: reward sitting; not outcome. 5–10 min. Never force or punish.

Hirschsprung’s: meconium >48h

Urgent paediatrics. Ribbon stools; failure to thrive. NEVER DRE. Rectal suction biopsy (specialist). Enterocolitis = 999.

Lactulose: from 6 months

NICE CG99: not under 6 months. Macrogol: from 12 months (specialist guidance from 6–12 months off-label). Infants: bath; massage; bicycle legs.

School letter = clinical intervention

Medical explanation; not behavioural; discrete toilet access; change of clothes; school nurse. As urgent as the prescription for school-age child with soiling.

Maintenance: 3–6+ months

Megarectum recovers slowly. Step down 1 sachet/month when stable (≥3 months). Relapse common (50–60%) and manageable: increase dose immediately.

ERIC.org.uk

UK childhood continence charity. Dose charts; Bristol Scale; star charts; school packs; parent guides. Helpline: 0845 370 8008. Recommend every consultation.

⚠ 3 — POOP Monitoring

POOP	Parameter	Timing	Action
Passage	Bristol Stool Scale type; frequency (parent diary)	Daily during disimpaction; weekly maintenance	Types 1–2 persisting: increase dose. Type 5–7 during disimpaction: continue (overflow clearing). Type 5–7 during maintenance: reduce dose.
Overflow	Soiling frequency; school attendance; Josh’s wellbeing	4–6 weeks	Soiling persisting at 6 weeks on max dose: paediatric referral. School refusal: CAMHS + education welfare.
Optimal dose	Correct disimpaction dose prescribed and escalated? Maintenance continued?	Every review	Premature stopping: re-educate; re-prescribe; re-disimpact if re-impacted. Underdosing: escalate to maximum.
Precipitant	Toilet routine established? Star chart? School letter acted upon?	4–6 weeks	Toilet routine not established: re-educate; ERIC resources. School letter not received: chase; school nurse contact.

🎓

SCA Exam Quick Reference

Constipation SCA — Overflow = constipation · High-dose Movicol · Months not days · Do NOT stop when better · School letter · Toilet training · Josh addressed · Gemma exonerated

NICE CG99 · Josh (6): gastroenteritis precipitant · Overflow soiling · Blocked drain analogy · ERIC · POOP mnemonic

▼expand

💬 Opening & ICE

Opener (to both): “Hello Josh — I know this might be embarrassing to talk about; that is completely OK — it happens to lots of children. Gemma — tell me what has been happening.”

Overflow soiling — the blocked drain analogy: “The runny stuff in Josh’s underwear is not diarrhoea. Think of a blocked drain. The hard stool is blocking the pipe; the liquid from higher up leaks around the blockage — that’s the overflow. It is a sign of MORE constipation; not less. The treatment is to clear the blockage — not stop the laxatives.”

ICE — Ideas: “What do you think has caused this? Did anything happen around when it started?”

ICE — Concerns: “What worries you most — is it that something is seriously wrong; or the laxatives; or the school situation?”

ICE — Expectations: “What would ‘sorted’ look like for you and Josh?”

Exonerate Gemma: “This started with the bug — not with anything you did wrong.”

Key message: “Do NOT stop when stools normalise — most common mistake.”

✅ Key SCA Tasks (15pt)

Overflow = constipation (2pt): Not diarrhoea. Blocked drain. Continue laxatives. Most dangerous error: stopping laxatives for “diarrhoea.”

Disimpaction dose (2pt): Age 5–11: 4 sachets/day → escalate by 2 every 2 days → max 12 sachets/day. 62.5ml water/sachet. Written schedule given.

Red flags screened (2pt): Hirschsprung’s (meconium; onset from birth; ribbon stools; FTT). No red flags today = functional confirmed. No investigations needed.

Maintenance months (2pt): Min 3–6 months. Step down 1 sachet/month when stable. Never stop abruptly. Relapse: increase dose immediately.

Toilet training (2pt): 3×/day post-meal. Footstool. Star chart (reward sitting; not outcome). Never punish soiling. 5–10 min.

School letter (1pt): Today. Medical explanation; not behavioural; discrete toilet access; change of clothes; school nurse.

Bristol Stool Scale (1pt): Types 3–4 target. Daily diary during disimpaction. Bring chart to review.

ERIC recommended (1pt): eric.org.uk; dose charts; star charts; school packs; helpline.

4–6 week review (1pt): Booked before leaving. Stool diary; school update; dose adjustment.

No investigations (1pt): Functional; clear precipitant; normal growth = no bloods needed.

🔴 Stopping laxatives for “diarrhoea” = most dangerous error

🔴 Maintenance dose without disimpaction first = wrong for Josh

🔴 Not addressing Josh directly = consultation style deduction

🔴 DRE in primary care = NEVER (especially if Hirschsprung’s possible)

👥 Relating to Others (11pt)

Josh addressed directly at start (1pt): Age-appropriate; non-embarrassing; warm

ICE: Ideas — precipitant identified (1pt): “The bug started this”

ICE: Concerns — organic fear + laxative safety (1pt): Red flags excluded; Movicol safe

ICE: Expectations — months not quick fix (1pt): Honest; positive framing

Overflow explained (1pt): Blocked drain; not dismissive; enables plan

Gemma exonerated (1pt): “Not your fault; the bug started this”

Laxative safety (1pt): “Not absorbed; not addictive; not damaging”

School impact acknowledged (1pt): Letter as clinical action; school nurse

Relapse normalised (1pt): Common; expected; manageable; action plan

Prognosis positive (1pt): Most recover fully; 12–24 months on laxatives normal

ERIC recommended (1pt): Practical; specific; empowering for Gemma

🟩 Gemma: “I feel so much better now I understand why it is happening. Thank you.”

💊 Laxative Quick-Pick by Age

Constipation in Children · GP Clinical Reasoning Framework v2 · NICE CG99 (2010; updated 2017): Constipation in children and young people · BNFC: Macrogol 3350 (paediatric doses; escalating disimpaction schedule) · NICE CKS: Constipation in children (2024) · ERIC: Education and Resources for Improving Childhood Continence (eric.org.uk) · Rome IV Diagnostic Criteria for Functional Gastrointestinal Disorders (2016) · Bristol Stool Form Scale (Lewis & Heaton; 1997) · Tabbers MM et al. European Society for Paediatric Gastroenterology; Hepatology; and Nutrition guidelines (2014)

Teaching clinicians why each step matters — not just what to do · Always consult current NICE CG99 and BNFC paediatric doses · Clinical judgement takes precedence over any framework

Constipation in Children

Red Flags — features suggesting organic (not functional) constipation

Safeguarding — Constipation, Soiling, and Child Welfare

💕 Emotional harm risk

📸 Sexual abuse screening

💻 School refusal risk

🧑️ Parental wellbeing

💕 Josh’s emotional experience

👤 Gemma’s experience

🏫 School as a partner

📈 Duration of treatment

Hirschsprung’s Enterocolitis / Obstruction

Suspected Organic Cause

Functional Idiopathic Constipation

Hirschsprung’s disease

Coeliac disease

Overflow soiling treated as diarrhoea

Underdosing macrogol — treatment failure

Validate — what she tried was sensible; just not sufficient

Explain — the two-phase plan: disimpaction then maintenance

Negotiate — the single most common mistake: stopping too early

Select age and presentation for laxative guidance

Josh’s Psychological Wellbeing

Gemma’s Guilt and Exhaustion

School Environment

Realistic Expectations — Months Not Days

Relapse is Normal and Manageable

ERIC — Parent and School Resource

Today — disimpaction prescription; school letter; toilet training; ERIC

4–6 weeks — disimpaction check; dose adjustment; school update

Monthly (maintenance phase) — dose adjustment; compliance

3–6 months — sustained normal stools; begin dose reduction?

Paediatric referral — if not responding to optimal GP treatment

POOP monitoring mnemonic for paediatric constipation

⚠ Three critical safety-nets

Documentation requirements

🎭 Patient actor brief — Josh Taylor (6) and Gemma Taylor (mother)

Who you are (Gemma)

Who you are (Josh)

Gemma’s hidden agenda — disclose if space created

Responses to key moments