Educational draft · awaiting clinical reviewThe full textbook explains uncertainty but does not replace live national or local guidance, specialist advice, or current prescribing information.
Dysphagia and odynophagia
Gastroenterology and hepatology · UK scope · Sources checked 27 Aug 2026 · Clinical review pending
!
Time-critical presentation
Inability to swallow saliva, drooling after a food bolus, airway compromise, stridor, severe chest or neck pain, subcutaneous emphysema, sepsis or suspected perforation requires emergency assessment and urgent endoscopic or surgical coordination. New neurological dysphagia must remain nil by mouth until trained swallowing screening; protect the airway and treat stroke or neuromuscular deterioration concurrently.
Overview
Localise swallowing difficulty to oropharyngeal or oesophageal phases, recognise aspiration, food-bolus obstruction and cancer risk, and sequence endoscopy, swallow imaging and manometry safely.
Swallowing has oral preparatory, pharyngeal and oesophageal phases. Oropharyngeal dysphagia produces difficulty initiating a swallow, coughing or choking, nasal escape, multiple swallows, voice change or recurrent chest infection. Causes include stroke, Parkinsonism, motor neurone disease, myopathy, structural pharyngeal lesions and treatment-related dysfunction. Oesophageal dysphagia begins after a swallow and is caused by luminal narrowing, mucosal inflammation or disordered motility. The perceived level is unreliable because distal obstruction can be felt in the neck. Ask about progression, solids versus liquids, duration, regurgitation of undigested food, heartburn, atopy, tablets, weight and aspiration.
Practice
Two practice questions
Your practice draft is saved in this browser.
Question 1 of 2
0 correct
Gastroenterology and hepatologyOriginal SBA
Acute stroke swallowing
A patient admitted with an acute stroke asks for water and regular tablets. Speech is slurred, but there has been no swallowing assessment. What is the safest immediate approach?
Sources and review status5 sources · checked 27 Aug 2026 · clinical review pending+
Sources
Sources and review status
National guidance is shown before implementation-dependent detail. Typical adult dose examples remain subject to patient factors, contraindications and the live BNF or specialist protocol. Source check completed 27 Aug 2026; clinical approval remains outstanding.
Mechanical narrowing generally affects solids before liquids. Rapid progression and weight loss suggest malignancy; intermittent episodes suggest ring or eosinophilic oesophagitis; longstanding reflux can cause a peptic stricture. Motility disorders often affect liquids and solids, with achalasia causing regurgitation, nocturnal cough and weight loss, but early presentations overlap. Odynophagia suggests active mucosal damage: candidal or viral oesophagitis in immunosuppression, pill injury after drugs lodge with little water, severe reflux, radiotherapy or cancer. Cardiac chest pain and aortic or oesophageal perforation remain dangerous alternatives when pain is acute.
Investigation follows localisation. A trained bedside swallow screen determines immediate oral safety in acute neurological disease but does not fully define physiology. Speech and language therapy assessment, videofluoroscopy or fibreoptic endoscopic evaluation of swallowing can identify aspiration and guide compensatory strategies. Oesophagogastroduodenoscopy is first-line for most persistent oesophageal dysphagia because it detects cancer, stricture and inflammation and permits biopsy. Contrast swallow is valuable for selected high pharyngeal lesions, complex strictures or achalasia morphology. High-resolution manometry follows adequate structural assessment when motility disease remains suspected. Every pathway includes nutrition, route of medicines and a plan for result review.
Key points
Ask where initiation fails rather than where food feels stuck: coughing, nasal regurgitation, wet voice and repeated swallows suggest oropharyngeal dysfunction even when the patient points to the neck.
Oesophageal dysphagia to solids first suggests mechanical narrowing, while difficulty with both solids and liquids from onset supports motility disease; neither rule is absolute.
Progressive dysphagia, weight loss, iron-deficiency anaemia or older-age new onset needs the current urgent oesophageal cancer pathway and prompt endoscopy.
Intermittent food impaction in a younger person raises eosinophilic oesophagitis or a ring; normal-looking mucosa does not remove the need for appropriate oesophageal biopsies.
Odynophagia points towards mucosal injury from reflux, tablets, infection, radiation or malignancy and is distinct from mechanical transit difficulty, although both can coexist.
After acute stroke, screen swallowing before any food, drink or oral medicine, and obtain specialist swallowing assessment when the screen is abnormal.
Upper gastrointestinal endoscopy assesses mucosa and narrowing, barium studies define selected structural or pharyngeal problems, and high-resolution manometry characterises motility after mechanical disease is excluded.
Do not
Aetiology
01
Oropharyngeal neuromuscular disease
Stroke, neurodegeneration, myopathy and structural pharyngeal disease impair swallow initiation and airway protection, often producing cough or a wet voice.
02
Mechanical oesophageal narrowing
Cancer, peptic stricture, eosinophilic oesophagitis, rings and external compression typically impede solids before liquids, although advanced obstruction affects both.
03
Motility and mucosal pain
Achalasia, spasm and systemic dysmotility impair propulsion, while reflux, pill, infective or caustic oesophagitis causes painful swallowing.
Pathophysiology
1
Failed bolus transfer
Weakness or discoordination prevents safe movement from mouth through pharynx, leaving residue that can enter the airway.
2
Luminal resistance
A tumour, inflammatory stricture or ring narrows the oesophageal lumen, initially obstructing poorly chewed solid food.
3
Propulsive or sensory failure
Absent peristalsis, impaired junction relaxation or ulcerated mucosa causes retention, regurgitation, chest pain or odynophagia despite no fixed blockage.
Clinical features and red flags
Oropharyngeal dysphagiaRed flag
Delayed initiation, coughing during swallowing, nasal regurgitation, wet voice, repeated swallows, drooling or neurological signs localise towards oral or pharyngeal dysfunction and carry immediate aspiration and nutrition risk.
Mechanical oesophageal narrowing
Solids becoming difficult before liquids, progressive frequency and food sticking support stricture, ring or tumour. Weight loss, anaemia and short progressive history markedly strengthen malignant concern.
Achalasia or major motility disorder
Dysphagia to liquids and solids, regurgitation of bland undigested food, nocturnal cough and weight loss supports achalasia, but pseudoachalasia from junctional cancer must be excluded before treatment.
Eosinophilic oesophagitis
Atopy, intermittent solid-food dysphagia and recurrent food bolus impaction suggest eosinophilic inflammation. Endoscopic rings or furrows may occur, yet diagnosis depends on adequate biopsies and can be missed when mucosa appears normal.
Complete food-bolus obstructionRed flag
Sudden inability to swallow liquids or saliva with drooling after eating indicates complete obstruction. Airway symptoms, sharp-bone ingestion or perforation signs increase urgency and require coordinated emergency endoscopy.
Infectious or pill oesophagitis
Painful swallowing, acute retrosternal pain and immunosuppression support infectious oesophagitis; recent doxycycline, bisphosphonate, iron or potassium taken with little water or before lying down supports pill injury.
Investigations
01Trained bedside swallow screenFirst step
Why
Determine whether oral intake and medicines are safe immediately after acute stroke or neurological deterioration.
Interpretation and limitations
A failed or uncertain screen means nil by mouth and specialist assessment, with hydration and medicine routes addressed. Passing a screen does not explain chronic oesophageal symptoms.
02Speech and language therapy assessment
Why
Characterise oral and pharyngeal function, aspiration risk, communication needs and practical compensatory strategies.
Interpretation and limitations
Recommendations are individual and may include posture, texture or supervised intake. Reassess as neurological status changes rather than treating one plan as permanent.
03Videofluoroscopic swallow study or FEES
Why
Visualise bolus transit, penetration, aspiration, residue and response to manoeuvres when bedside assessment is insufficient.
Interpretation and limitations
Videofluoroscopy shows dynamic oral, pharyngeal and upper oesophageal phases with radiation; FEES visualises pharyngeal anatomy and secretions at bedside. Select according to the unresolved question.
04Upper gastrointestinal endoscopy with biopsies
Why
Detect malignancy, stricture, rings, oesophagitis and retained food and obtain tissue for eosinophilic or malignant disease.
Interpretation and limitations
Differential diagnosis
01
Oesophageal cancer
Progressive solid-to-liquid dysphagia, weight loss, anaemia or older-age new onset requires urgent endoscopy on the suspected-cancer pathway.
02
Achalasia or major motility disorder
Liquids and solids affected from early on, bland regurgitation and compatible manometry favour motor failure after structural disease is excluded.
03
Oropharyngeal dysphagia
Difficulty initiating, coughing, nasal regurgitation, repeated swallows or wet voice directs speech-and-language and swallow-imaging assessment rather than primary oesophageal testing.
Management
01Airway and bolusManage complete obstructionFirst stepThe patient cannot swallow saliva or has respiratory compromise after eating.+
1Assess airway, breathing and haemodynamics, keep the patient nil by mouth, remove loose oral material only when safely visible and call senior endoscopy and anaesthetic support.
2Establish time and food or foreign-body type, anticoagulants, prior impactions and perforation features; avoid forceful oral intake or blind instrumentation.
3Arrange emergency therapeutic endoscopy on the locally defined timeline, with surgical input for sharp objects, perforation, failed removal or other complication.
4After clearance, investigate the underlying cause with biopsies and follow-up rather than treating food bolus as an isolated accident.
02Oropharyngeal pathwayProtect lungs and nutritionSwallow initiation, cough, wet voice or neurological disease suggests pharyngeal dysfunction.+
Complications
01
Aspiration and pneumonia
Impaired airway protection or regurgitated oesophageal contents can cause choking, hypoxia and recurrent pulmonary infection, sometimes without obvious cough.
02
Food-bolus obstruction
A lodged bolus can prevent saliva handling and threaten aspiration or perforation, requiring urgent endoscopic assessment.
03
Malnutrition and dehydration
Avoidance of difficult textures and reduced fluid intake cause weight loss, frailty and kidney injury while the underlying obstruction or motor disorder progresses.
Monitoring and follow-up
Track cough during meals, wet voice, oxygen change, recurrent chest infection and temperature as markers of clinically important aspiration.
Record weight, intake, hydration, diet texture, route of medicines and dietetic plan while swallowing safety or obstruction remains unresolved.
After endoscopic bolus removal or dilatation, monitor pain, pulse, temperature, breathing and subcutaneous emphysema and escalate possible perforation immediately.
Ensure endoscopic histology, including eosinophilic biopsies and suspected cancer samples, has a named reviewer and a documented next action.
Repeat swallowing assessment after neurological recovery or deterioration because safe consistency and supervision needs are dynamic.
Special situations
Perceived level misleads
Patients frequently point to the neck even when a bolus is held in the distal oesophagus. Swallow initiation and associated coughing localise better than the finger-pointed site.
Normal mucosa can inflame
Eosinophilic oesophagitis may have subtle or absent visual changes. A compatible impaction history should trigger the correct multi-level biopsy protocol rather than reassurance from appearance alone.
Pseudoachalasia must be excluded
Older age, short symptom duration and disproportionate weight loss can indicate a gastro-oesophageal junction tumour mimicking achalasia. Manometric physiology does not remove the need for structural assessment.
Aspiration can be silent
Neurological and frail patients may aspirate without a strong cough. Voice, oxygen, chest infections and instrumental assessment can reveal risk that bedside observation alone misses.
Bolus is a diagnostic event
Food impaction often exposes an underlying ring, eosinophilic disease, stricture or cancer. Safe removal should be followed by biopsy and definitive planning to prevent recurrence.
Common pitfalls
01
Assuming the anatomical lesion lies where the patient feels food sticking.
02
Giving water or oral medicines after acute stroke before trained swallowing screening.
03
Sending complete food-bolus obstruction to routine outpatient endoscopy despite inability to handle saliva.
04
Failing to biopsy a normal-looking oesophagus in recurrent impaction with an eosinophilic phenotype.
05
Requesting manometry before adequately excluding tumour, stricture and mucosal disease.
06
Dilating unexplained narrowing without appropriate biopsy, consent and perforation aftercare.
arrange blind dilatation of unexplained dysphagia. Define anatomy, obtain biopsies when required, consent for perforation risk and use an experienced endoscopy pathway.
Nutrition, hydration, aspiration and medication formulation need active management while diagnosis proceeds; simply telling a patient to eat soft food is not a complete safety plan.
Biopsy normal-appearing oesophagus when eosinophilic oesophagitis is plausible according to protocol. A tight lesion should be characterised and sampled safely before any planned dilatation strategy.
05Contrast oesophagram
Why
Define selected rings, diverticula, complex strictures, pharyngeal anatomy or timed oesophageal emptying before or after specialist intervention.
Interpretation and limitations
It complements rather than universally replaces endoscopy. Suspected perforation requires the radiologist to select contrast and technique; aspiration risk must be communicated.
06High-resolution oesophageal manometry
Why
Diagnose achalasia and other motility disorders after structural and mucosal obstruction has been adequately excluded.
Interpretation and limitations
Interpret integrated relaxation and peristaltic patterns with symptoms and endoscopy. Manometry can subtype achalasia and guide therapy but does not biopsy pseudoachalasia or cancer.
1
AlternativeMake the patient nil by mouth when immediate safety is uncertain and provide alternative hydration and time-critical medicine routes.
2EscalationObtain trained swallow screening and speech and language assessment, escalating acute neurological signs through the stroke or neuromuscular pathway.
3Use videofluoroscopy or FEES when aspiration mechanism or compensatory response remains unclear, then implement the individual texture, posture and supervision plan.
4Monitor respiratory infection, hydration, weight and oral hygiene, and review whether temporary or longer-term enteral support is needed with multidisciplinary input.
03Oesophageal pathwayExclude structure before motilityFood passes the pharynx but sticks or regurgitates from the oesophagus.+
1Classify solids versus liquids, progression, impaction, reflux, atopy, odynophagia and cancer warning features, applying urgent referral where indicated.
2Arrange upper gastrointestinal endoscopy with appropriate biopsy strategy as the principal structural and mucosal assessment.
3Use barium imaging for selected proximal, complex or achalasia questions, then high-resolution manometry when adequate endoscopy has not explained suspected dysmotility.
4Link the diagnosis to cancer, dilatation, eosinophilic, reflux or specialist motility treatment and give interim nutrition and bolus safety advice.
04DilatationTreat narrowing under governanceA benign oesophageal stricture or ring has been defined and dilatation is proposed.+
1Confirm diagnosis and anatomy, biopsy when needed, review anticoagulants and comorbidity, and obtain consent that includes perforation, bleeding and need for repeat sessions.
2Use the technique, increments and imaging support recommended for that lesion by the trained endoscopist and local BSG-aligned protocol.
3Aftercare must include observation, oral-intake instructions and urgent assessment for persistent chest pain, breathlessness, fever or tachycardia suggesting perforation.
Key medicines and prescribing safety1 treatment · regimens, roles and cautions+
Suppresses acid, promotes mucosal healing and reduces recurrence after management of a reflux-related benign narrowing.
Proton-pump inhibitor for reflux-related injury
Use the current full-dose BNF regimen for documented reflux oesophagitis or peptic stricture, then review healing, symptoms and the long-term maintenance indication.
Acid suppression must not delay urgent endoscopy for dysphagia. Review interactions and long-term adverse-effect burden, and confirm that persistent obstruction is not malignant, eosinophilic or motility-related.