Paediatrics · Full case
Wheeze in Children
Wheeze in Children · Clinical Reasoning Framework v2
GP & SCA · Viral-induced wheeze vs asthma · Acute severity · Spacer technique · Foreign body · Bronchiolitis · Safety-netting
Is it really wheeze?Parents call many noises "wheeze." True wheeze is a polyphonic high-pitched expiratory whistle from the lower airways — distinguish it from stertor (snuffly upper airway), stridor (inspiratory, upper airway — croup/foreign body), and a rattly transmitted cough
Viral wheeze ≠ asthmaEpisodic viral-induced wheeze (well between colds, no interval symptoms, often the toddler years) is the commonest pattern and is not the same as asthma. Multi-trigger wheeze with interval symptoms, atopy and a family history points toward asthma
No firm asthma label <5A definite diagnosis of asthma is hard to confirm under 5 (objective tests unreliable). Use a "suspected asthma" / watchful approach with a treatment trial and review, rather than committing a pre-schooler to a lifelong label prematurely
Spacer beats inhalerA pressurised metered-dose inhaler via a spacer (with a face mask in the young) is as effective as a nebuliser for most acute wheeze and is the mainstay of delivery. Check and teach technique every time — poor technique is the commonest cause of "treatment failure"
Silent chest = peri-arrestA silent chest, cyanosis, exhaustion, poor respiratory effort, SpO2 <92%, or altered consciousness are life-threatening features — 999, high-flow oxygen, back-to-back salbutamol and immediate escalation
Sudden + choking = foreign bodyAbrupt onset of wheeze/cough in a well child, especially unilateral signs, after eating or playing with small objects → inhaled foreign body; needs urgent assessment ± bronchoscopy. A unilateral monophonic wheeze is foreign body until proven otherwise
<1yr first wheeze = ?bronchiolitisA first wheezy episode in an infant with coryza, cough, poor feeding and fine crackles is more likely bronchiolitis (usually RSV) — supportive care, and admit for feeding/oxygen concerns; bronchodilators are not routinely effective
Atypical → think againFaltering growth, wet productive cough, finger clubbing, persistent focal signs, or wheeze from early infancy unresponsive to treatment → consider cystic fibrosis, bronchiectasis, congenital/cardiac cause, or (with lymphadenopathy/hepatosplenomegaly) a mediastinal mass — investigate, don't keep escalating inhalers
📋 Clinical Stem — Wheeze in Children
A 3-year-old brought by his anxious mother with a third bout of wheeze this winter — well between episodes — and a request for "an asthma inhaler and a proper diagnosis"
Theo Marsh, 3, is brought by his mother. He has had three episodes of wheeze and cough this winter, each starting with a runny nose and cough and settling over a few days; between episodes he is completely well, running around, eating and sleeping normally, with no night cough and no exercise symptoms. Today he is at the tail end of a cold — a little wheezy and coughing but feeding, talking in full sentences, playing, and not distressed. His mother is exhausted and worried; her sister's child "has bad asthma," and she wants Theo started on a regular preventer inhaler and given "a definite diagnosis." There is no personal history of eczema, no clear family history of asthma in Theo's parents, and he was born at term and growing well.
This stem tests the ability to: assess the acute episode for severity and decide it is safe for community management; distinguish episodic viral-induced wheeze (well between colds, no interval symptoms) from asthma, and explain why a firm asthma diagnosis and a regular preventer are not appropriate for this 3-year-old yet; teach spacer/inhaler technique; safety-net clearly for deterioration; and manage the parent's understandable wish for certainty and a preventer with empathy and shared decision-making rather than simply acquiescing or dismissing. The red-flag discipline is to keep foreign body, bronchiolitis (in younger infants) and the atypical/sinister causes in mind.
Scenario A — Episodic viral-induced wheeze (this stem) Well between colds, no interval symptoms, toddler. Manage the acute episode (salbutamol via spacer PRN), parent education and a clear self-management/safety-net plan; avoid premature asthma labelling and routine preventers; review.
Scenario B — Suspected asthma Interval symptoms (night cough, exercise wheeze), atopy (eczema, allergic rhinitis), family history, response to bronchodilator. Trial of treatment with structured review; in school-age children use objective tests to support the diagnosis.
Scenario C — Acute severe / life-threatening Marked work of breathing, can't complete sentences/feed, SpO2 low; or silent chest, cyanosis, exhaustion, poor effort. → Oxygen, salbutamol (burst/back-to-back), steroids, 999 for life-threatening features; admit.
Scenario D — Inhaled foreign body Sudden wheeze/cough in a previously well child after eating nuts or playing with small parts; unilateral/monophonic wheeze or focal signs. → Urgent assessment ± rigid bronchoscopy; do not anchor on "viral wheeze."
Scenario E — Bronchiolitis (infant) First wheezy episode <1 year with coryza, fine crackles, poor feeding. → Supportive care; admit for feeding <50–75% or oxygen needs/apnoea; bronchodilators not routinely effective.
Key variables to adapt for Age (bronchiolitis in infants; firm asthma label avoided <5); pattern (episodic viral vs multi-trigger/interval symptoms); atopy & family history; acute severity (effort, SpO2, feeding, speech); onset (sudden + choking → foreign body); growth and atypical features (CF, bronchiectasis, cardiac, mediastinal mass); inhaler/spacer technique; smoke exposure; parental anxiety and expectations.
Steps:
1
Step 1
History — Is it Wheeze? · Pattern · Severity · Atypical Features · ICE
collapse
The history answers four questions: is this genuinely wheeze (not stertor, stridor or a rattly cough); what is the pattern over time (episodic viral vs interval/multi-trigger); how bad is the current episode; and are there atypical features that should make you think beyond "wheezy child"? Layered over all of it is the parent's agenda — Theo's mother wants a diagnosis and a preventer, driven by her sister's child's asthma and her own exhaustion.
🎓 SCA framing — take the worry seriously, resist the premature label
"It's clearly worrying watching him struggle with these colds, and I want to give you a clear plan for it. Can I explain why, at three, I'd hold off on calling it asthma just yet — and what we'd watch for that would change that?"
The mother equates "a preventer and a label" with being taken seriously. The skill is to validate her, give a concrete plan for the episodes, and explain the uncertainty of an asthma diagnosis under 5 — without leaving her feeling fobbed off.
1A — Characterise the wheeze and the pattern
1B — Red flags
🚨
Red Flags — the wheezy child who needs more than reassurance
| Red flag | Why dangerous | Action |
|---|---|---|
| Life-threatening features — silent chest, cyanosis, poor respiratory effort, exhaustion, SpO2 <92%, altered consciousness | Imminent respiratory failure. A "quiet" chest in a tiring child is more dangerous than a loud wheeze. | 999; high-flow oxygen; back-to-back salbutamol; steroids; blue-light transfer |
| Acute severe — too breathless to feed/talk, marked recession, RR/HR very high, SpO2 <92% | Needs urgent treatment and assessment; can progress to life-threatening. | Salbutamol burst via spacer; oral steroid; oxygen; urgent paediatric assessment/admission |
| Sudden onset ± choking, unilateral/monophonic wheeze | Inhaled foreign body — may be missed as "viral wheeze"; risks complete obstruction and distal collapse/infection. | Urgent ENT/paediatric assessment ± rigid bronchoscopy |
| Infant <1 yr — first wheeze with poor feeding / apnoea / oxygen needs | Bronchiolitis can deteriorate; young infants and those with risk factors (prematurity, cardiac/lung disease) are vulnerable to apnoea and feeding failure. | Admit if feeding <50–75%, oxygen needs, apnoea, or significant distress |
| Atypical chronic features — faltering growth, wet productive cough, clubbing, persistent focal signs, wheeze from early infancy | Suggests cystic fibrosis, bronchiectasis, congenital/cardiac disease, recurrent aspiration — not simple viral wheeze. | Paediatric referral and investigation; do not keep escalating inhalers |
| Systemic features — unexplained lymphadenopathy/hepatosplenomegaly, pallor, persistent fever, weight loss | Raises a mediastinal mass / haematological malignancy; NICE NG12 children with unexplained lymphadenopathy or hepatosplenomegaly warrant very urgent investigation (FBC, specialist referral). | Very urgent FBC + paediatric referral (NICE NG12 children & young people) |
1C — ICE
💭 Ideas
"What do you think is going on — and what's making you think it might be asthma?"
Theo's mother has an asthma model from her sister's child. Surfacing it lets you honour her observation (recurrent wheeze IS worth taking seriously) while explaining why the pattern matters — and why "asthma" is a label best earned over time, not stamped on at three.
😟 Concerns
"What's the thing that frightens you most when he's like this?"
Her concern is probably watching him struggle to breathe and feeling helpless — and exhaustion from broken nights. Addressing the fear directly (what severe looks like, when to act, what to do at home) gives her control and is more reassuring than a prescription alone.
🎯 Expectations
"You mentioned a preventer inhaler and a firm diagnosis — tell me what you were hoping those would do."
She equates a preventer and a diagnosis with being taken seriously and with stopping the episodes. Naming this lets you explain that a daily preventer is not indicated for episodic viral wheeze, offer what will help (a reliever via spacer, a written plan, review), and keep her on side.
1D — Psychosocial context
😴 Exhaustion & helplessness
Broken nights and the helplessness of watching a child struggle drive anxiety. Acknowledge it and give concrete control: what to do, what to watch, when to seek help.
"It's exhausting and frightening watching him like this — let's make sure you leave today knowing exactly what to do at home and exactly what would mean he needs to be seen urgently."🏷️ The wish for a label
A diagnosis feels like certainty. Explain that under five, the honest answer is often "wait and watch the pattern," and that this is good medicine, not indecision.
"I know a clear name would feel reassuring. At three it's genuinely hard to be certain it's asthma — many children wheeze with colds and grow out of it. Watching how the pattern develops is the most honest way to get it right for him."🚬 Smoke exposure
If anyone smokes at home, this is a major modifiable factor — raise it supportively, tied to the child's breathing, not as blame.
"One of the biggest things that helps a wheezy child's chest is keeping the home and car completely smoke-free — I can help anyone in the house who'd like support to cut down or stop."👍 Empowerment through a plan
A written action plan and confident spacer technique turn a frightening situation into a managed one — often more reassuring than any prescription.
"I'll give you a simple written plan — how much reliever to give through the spacer, how often, and the signs that mean call 999 or come straight in. You'll know exactly what to do next time."🎓 SCA Checkpoint — Step 1TasksRelating to OthersGlobal Skills
Key phrases that score
"Is he completely well between these colds, or does he cough at night or wheeze when running about?" — the question that separates viral wheeze from asthma.
"Did it come on suddenly — was he eating or playing with small toys?" — keeps foreign body in mind.
"At three it's genuinely hard to be sure it's asthma — let's watch the pattern and I'll give you a clear plan now." — honest, reassuring, not dismissive.
Deductions
- Labelling asthma and starting a regular preventer in a pre-schooler with episodic viral wheeze
- Not assessing acute severity (feeding, speech, effort, colour)
- Not distinguishing true wheeze from stridor/stertor; missing foreign body
- Dismissing the parent's worry without a plan
🔴 Red
Severity not assessed; foreign body/stridor not considered; asthma label + preventer applied prematurely; no safety-net; parent dismissed
🟠 Amber
Episode assessed; pattern partly explored; some safety-net; preventer discussion unclear; ICE partial
🟢 Green
Wheeze confirmed; severity assessed (safe for community); episodic viral pattern identified; preventer/label appropriately deferred; spacer technique; clear written safety-net; ICE all three; smoke exposure addressed
2
Step 2
Triage — Life-Threatening · Acute Severe · Urgent · Community
collapse
The first triage question in any wheezy child is acute severity — because a tiring child with a quiet chest needs blue-light care, not a clinic appointment. Then sit the foreign body, the young infant, and the atypical/sinister presentations into their urgent lanes, leaving the well child with episodic viral wheeze for community management.
🔴 Emergency
999 / blue light
Life-threatening- Silent chest, cyanosis, exhaustion, poor effortSpO2 <92%, altered consciousness → oxygen, back-to-back salbutamol, steroids, 999
- Apnoea (infant)Especially <3 months / risk factors → 999
- Complete airway obstruction (foreign body)Unable to cry/cough/breathe → paediatric basic life support; 999
🟠 Urgent / Refer
Same day / soon
Hours- Acute severe — can't feed/talk, marked recession, SpO2 <92%Treat + urgent paediatric assessment/admission
- Suspected inhaled foreign bodyUrgent ENT/paediatric assessment ± bronchoscopy
- Infant bronchiolitis with feeding/oxygen concernAdmit per NICE NG9 thresholds
🟢 Routine
Community
Primary care- Episodic viral wheeze — well childReliever via spacer; written plan; safety-net; review
- Suspected asthma — interval symptomsTreatment trial + structured review; objective tests in school-age
- Atypical features (non-acute)Paediatric referral for investigation
🎓 SCA Checkpoint — Step 2Tasks
Triage rationale
"Right now Theo's feeding, talking and playing and his oxygen levels are fine, so this is safe to manage at home — but I'll show you exactly what would mean he needs to be seen urgently."
Deductions
- Not recognising a silent chest/exhaustion as life-threatening
- Missing foreign body or an unwell infant who needs admission
3
Step 3
Examination — Effort · Air Entry · Auscultation · Growth · Red-Flag Signs
collapse
Examination grades the acute severity and looks for the features that change the diagnosis. The most important judgement is work of breathing and air entry — and the recognition that a quiet chest with poor effort is an emergency, not a reassuring sign.
🎓 SCA Checkpoint — Step 3TasksGlobal Skills
Narration that scores
"I'm checking how hard he's working to breathe, his oxygen level, and listening to both sides of the chest — and I'll quickly plot his growth, because that helps me be sure this is just viral wheeze and nothing more."
Deductions
- Reassured by a "quiet chest" in a tiring child
- Not checking SpO2 / work of breathing / growth
4
Step 4
Investigations — Mostly Clinical · The Treatment Trial · When to Test
collapse
Wheeze in young children is a clinical diagnosis — most need no tests, and the most useful "investigation" is often a structured trial of treatment with review. Objective tests (spirometry, FeNO, peak flow) become possible and useful in school-age children with suspected asthma; targeted tests are reserved for atypical or severe presentations.
🎓 SCA Checkpoint — Step 4Tasks
Key reasoning
"At three we can't do reliable breathing tests, so the best way to get this right is to treat the episodes, write down the pattern, and review — rather than commit him to a daily inhaler now."
Deductions
- Ordering spirometry in a 3-year-old (unreliable)
- Starting long-term treatment with no review or documented pattern
- Reflex chest X-ray with no indication
5
Step 5
Diagnosis — Viral Wheeze vs Asthma vs the Mimics
collapse
The diagnostic step names the pattern and resists premature certainty: episodic viral wheeze, suspected/probable asthma, or one of the mimics that must not be missed.
🚩 Don't anchor — the patterns that should stop you escalating inhalers
Two disciplines protect the wheezy child: don't over-diagnose asthma in a pre-schooler with simple viral wheeze (avoiding unnecessary long-term treatment and a sticky label), and don't under-investigate the child whose course is atypical — sudden onset (foreign body), faltering growth or wet cough (CF/bronchiectasis), or systemic features (mediastinal/haematological). For Theo, the pattern is reassuringly typical episodic viral wheeze; the formulation is "viral-induced wheeze, no features of asthma or sinister disease today, safe for community management with review."
🎓 SCA Checkpoint — Step 5Tasks
Explaining it plainly
"What I think Theo has is wheeze that comes with colds — very common at his age, and most children grow out of it. It's not the same as asthma, and because he's completely well between colds I wouldn't start a daily inhaler now — but we'll keep an eye on the pattern."
Deductions
- Committing to "asthma" without the supporting pattern
- Missing an atypical course that needs investigation
6
Step 6
Referral — Emergency · Paediatric Assessment · Atypical Work-up
collapse
Most wheezy children are managed in primary care. Referral is for the acute emergency, the unwell infant, the suspected foreign body, and the atypical/severe presentations that need specialist investigation.
🎓 SCA Checkpoint — Step 6Tasks
Knowing the thresholds
"Theo doesn't need referral today — but if these became very frequent or severe, or if I had any worry about his growth or his chest between colds, I'd involve the paediatric team."
Deductions
- Failing to admit an unwell infant / severe episode
- Persisting with inhalers in an atypical child who needs investigation
7
Step 7
Management — Reliever via Spacer · Technique · Safety-Net · Review
collapse
For episodic viral wheeze the plan is a reliever via a spacer for episodes, excellent technique, a clear written safety-net, parent education, and review — not a daily preventer. Where asthma is suspected, add a structured treatment trial with review. Theo's plan delivers reassurance and control without over-treatment.
7A — The plan
🎓 SCA Checkpoint — Step 7TasksRelating to OthersGlobal Skills
A plan that scores
"Here's the plan: a reliever inhaler through a spacer for when he's wheezy — let me show you exactly how — a written sheet of what to do and the danger signs to act on, keeping the home smoke-free, and a review to watch the pattern. I'd hold off on a daily preventer for now."
Deductions
- Starting a regular preventer for episodic viral wheeze
- Not teaching spacer technique
- No written safety-net / danger signs; no review
Wheeze in Children — SCA Consultation Scorecard
Viral wheeze vs asthma · Acute severity · Spacer technique · Safety-netting · Avoid premature label
0/ 33 pts
Global Skills
Structure, language, responsiveness
0/7
Tasks
Clinical reasoning, diagnosis, management
0/15
Relating to Others
Communication, rapport, shared decisions
0/11
RAG Self-Assessment
🔴 Red
Severity not assessed; foreign body/atypical missed; asthma label + preventer started prematurely; no spacer technique; no safety-net
🟠 Amber
Episode assessed; pattern partly explored; some safety-net; preventer decision unclear; ICE partial
🟢 Green
Severity graded; viral wheeze identified; preventer/label deferred appropriately; spacer technique; written safety-net; ICE all three; smoke-free advice; review
Complete the checklist to see your score and feedback
"He keeps getting wheezy with every cold — this is the third time this winter. My sister's little boy has bad asthma, and I really think Theo needs a proper diagnosis and one of those preventer inhalers. Can we sort that today?"
Who you are
You are Theo's mum. Theo is 3, normally a whirlwind. Three times this winter he's started with a runny nose and cough and gone wheezy for a few days, then been completely fine again — running around, eating well, sleeping well, no night cough, no problems when he's playing. Today he's at the tail end of a cold, a bit wheezy and coughing but chatting away, playing with the toys and not distressed. You're shattered from broken nights and worried. Your sister's son has severe asthma and it frightens you. You came in convinced Theo needs to be started on a regular preventer inhaler and given a clear diagnosis.
Hidden concerns (reveal if explored)
Fear (main): watching him struggle to breathe scares you and you feel helpless. If the doctor gives you a clear plan and shows you what to do, you feel much better.
Wanting certainty: "not knowing" is hard. If the doctor explains honestly why they'd wait before calling it asthma, and what they'd watch for, you can accept it.
Smoking: Theo's dad smokes (outside, mostly). You'll mention it if asked and are open to help.
Clinical details if asked
- Completely well between colds — no night cough, no wheeze when running about, no symptoms without a cold
- Each episode starts with coryza, lasts a few days, settles
- No eczema; no hay fever; parents not asthmatic (sister's child is)
- Born at term; growing well; eating and gaining normally
- Today: feeding, talking in full sentences, playing; mild wheeze/cough; not blue, not sucking in
- No sudden choking episode; no small-object incident; no weight loss, lumps or unusual tiredness
- Theo's dad smokes
Reactions at key moments
- On "not asthma yet": "But he clearly wheezes — why won't you call it asthma?" → reassured by an honest explanation of pattern and age.
- On no preventer: mild disappointment → satisfied if given a reliever + spacer + written plan instead.
- On the spacer: grateful to be shown how to use it properly.
- Challenge line: "So you're not going to do anything? I came here for a preventer."
"So you're saying it's nothing and sending us away with no inhaler? My sister's boy ended up in hospital — I don't want that for Theo."
Resolution: Theo's mum leaves satisfied if the GP: (1) takes her fear seriously and assesses the acute episode (safe for home); (2) explains the difference between viral wheeze and asthma, and why a firm label/preventer is deferred at 3 — without dismissing her; (3) provides a reliever via spacer with technique taught, and a clear written safety-net with danger signs; (4) addresses smoke exposure supportively; (5) arranges review to watch the pattern. She disengages if she feels fobbed off with "it's nothing," given no plan, or if her worry is brushed aside.
Clinic Quick Reference
Wheeze in Children — Clinical Decision Framework
BTS-SIGN/NICE NG245 · Viral wheeze vs asthma · NG9 bronchiolitis
expand
🚦 1 — Acute severity first
Wheezy child
▼
🔴 Life-threatening
- Silent chest, cyanosis, exhaustion, poor effort
- SpO2 <92%, altered consciousness, apnoea
🟠 Acute severe / urgent
- Can't feed/talk, marked recession
- Foreign body; unwell infant (bronchiolitis)
🟢 Community
- Episodic viral wheeze (well child)
- Suspected asthma — trial
🔍 2 — Pattern & plan
Episodic viral wheeze
Well between colds; no interval symptoms. Reliever via spacer for episodes; technique; written safety-net; review. No routine preventer; no firm asthma label <5.
Suspected asthma
Interval symptoms, atopy, family history. Structured treatment trial + review; objective tests (spirometry/FeNO) in school-age. Investigate atypical features (CF, foreign body, cardiac, mediastinal mass).
SCA Quick Reference
Wheeze in Children — Consultation Playbook
Assess severity · name the pattern · don't over-label · safety-net
expand
🎯 The three pivots that pass this case
1 · Severity
Grade the episode (feeding, speech, effort, SpO2). A silent chest in a tiring child is an emergency, not reassurance.
2 · Pattern, not label
Well between colds + no interval symptoms = episodic viral wheeze. Don't start a daily preventer or stamp "asthma" on a 3-year-old.
3 · Equip the parent
Reliever via spacer with technique taught + a written safety-net with danger signs = control and reassurance.
⛔ Don't be reassured by a quiet chest in a tiring child · Don't miss sudden-onset foreign body or an unwell infant · Don't over-diagnose asthma or start routine preventers in a pre-schooler with viral wheeze · Don't under-investigate atypical features (growth, wet cough, clubbing, systemic signs) · Always teach spacer technique and give a written safety-net