NICE NG12 (Suspected Cancer, 2023) mandates 2WW upper GI endoscopy for dysphagia at any age — there is no age threshold below which dysphagia can be considered benign without investigation. Oesophageal cancer has a 5-year survival of only 15% at stage IV versus 90% at stage I — early referral is the most impactful intervention a GP can make. Progressive dysphagia (solids → liquids) is the classic history of mechanical obstruction (tumour or benign stricture) — the transition from difficulty with bread and meat to difficulty with liquids indicates progressive luminal narrowing and is an oncological emergency. Food bolus obstruction needs endoscopic removal within hours to prevent mucosal ischaemia and perforation.

The oropharyngeal/oesophageal distinction determines the urgency and direction of referral. Oropharyngeal dysphagia after stroke carries a 50% aspiration pneumonia risk — SALT (Speech and Language Therapy) assessment is mandatory within 24 hours in acute stroke. Achalasia (failure of lower oesophageal sphincter relaxation) presents classically with dysphagia for both solids and liquids from the outset, with regurgitation of undigested food, and nocturnal cough — it is distinguished from cancer by its intermittent, long-standing history and young patient age. Eosinophilic oesophagitis is an increasingly recognised cause in young atopic adults presenting with recurrent food impaction — it requires endoscopy with biopsies and specialist management.

Barrett's oesophagus (columnar metaplasia of the distal oesophagus from chronic GORD) is a precursor to oesophageal adenocarcinoma — patients with Barrett's have a 30–40× increased cancer risk and require endoscopic surveillance. Eosinophilic oesophagitis is now the most common cause of food impaction in young adults — it was barely recognised 20 years ago but its incidence is increasing in parallel with allergic disease. Pharyngeal pouch (Zenker's diverticulum) can be dangerous — regurgitation of food from the pouch during anaesthetic induction causes aspiration pneumonia. Any patient with a pharyngeal pouch must have this documented in their records and surgical pre-assessment teams must be alerted.

Tongue fasciculations are a pathognomonic sign of lower motor neurone involvement and should be specifically looked for in any patient with progressive oropharyngeal dysphagia — bulbar-onset MND is easily missed if the neurological examination is not complete. A wet or "gurgling" voice after swallowing indicates material pooling in the hypopharynx and is a clinical sign of aspiration risk — SALT referral is immediate. Oropharyngeal candidiasis causes dysphagia (particularly painful swallowing — odynophagia) and is common in patients using inhaled corticosteroids who do not rinse their mouth after use, diabetics, and immunocompromised patients.

NICE NG12 (2023) updated guidance explicitly states that ALL unexplained dysphagia warrants 2WW upper GI endoscopy regardless of age — previous guidance had age thresholds that caused missed diagnoses in younger patients. Submitting both a head and neck 2WW and upper GI 2WW when uncertain about the level is acceptable — the specialist team will direct appropriately after flexible nasendoscopy or endoscopy. SALT involvement is critical in oropharyngeal dysphagia — aspiration pneumonia is the most common cause of death in neurological dysphagia, and SALT-guided modified diet (IDDSI framework) and feeding tube decisions are specialist decisions that should not be made in primary care alone.

Iron-deficiency anaemia in the context of dysphagia has a high positive predictive value for upper GI malignancy — both findings mandate urgent 2WW endoscopy. The Paterson-Kelly (Plummer-Vinson) syndrome (iron-deficiency anaemia + dysphagia + oesophageal web) is a rare but important condition that predisposes to postcricoid carcinoma — iron replacement alone may resolve the web. CXR showing an absent gastric air bubble is a classical radiological sign of achalasia — the fundal air shadow normally visible below the left hemidiaphragm is absent because no air can enter from the oesophagus past the tight lower oesophageal sphincter.

Starting a PPI for dysphagia while awaiting 2WW endoscopy is appropriate — it treats any co-existing oesophagitis and is not harmful. However, it must never be used as a reason to delay 2WW referral — the clinical principle is "refer AND treat, not treat THEN refer." Bisphosphonate-induced oesophagitis (alendronate, risedronate) causes severe oesophageal ulceration if tablets are not taken correctly — patients must sit or stand upright for 30 minutes after taking, with at least 200 ml water, and must not eat for 30 minutes. Monthly bisphosphonate formulations (risedronate 150 mg monthly) improve adherence and reduce oesophageal contact time.

Aspiration pneumonia accounts for 20–30% of deaths in patients with neurological dysphagia (stroke, MND, Parkinson's) — it is largely preventable with correct swallowing precautions and modified diet. The IDDSI framework (2019) replaced earlier inconsistent texture terminology internationally — using standardised IDDSI levels on prescriptions and referrals ensures consistent food preparation across care settings. Chin-tuck swallowing (chin to chest before swallowing) narrows the laryngeal inlet and significantly reduces aspiration — it is a SALT-taught technique with evidence in post-stroke dysphagia that GPs can reinforce at every consultation.

Active tracking of 2WW referrals is a GP responsibility — studies consistently show that 10–15% of 2WW referrals are not acted upon by the hospital due to administrative errors, and patients do not always chase their own appointments. A written safety-net at time of referral (telling the patient to phone the hospital if no letter in 2 weeks, with the hospital number) is best practice. PEG tube timing in MND is a critical palliative decision — PEG is safest when FVC (forced vital capacity) is >50% and becomes dangerous below 50% due to anaesthetic risk. This discussion requires advance care planning while the patient has capacity to participate.