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Educational draft · awaiting clinical reviewUse Rapid for revision, not patient-care decisions. Check current national and local guidance and the BNF or BNFC before acting.

Oesophagitis: reflux, pill, infective and caustic

Gastroenterology and hepatology · UK scope · Sources checked 27 Aug 2026 · Clinical review pending

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Escalate

Drooling, stridor, respiratory distress, shock, severe chest or abdominal pain, haematemesis, subcutaneous emphysema or peritonism after caustic ingestion requires immediate airway, toxicology and upper-GI surgical assessment. Do not induce vomiting, attempt chemical neutralisation or give anything orally without expert advice. Severe odynophagia with sepsis, neutropenia or inability to swallow fluids also needs urgent admission. Suspected perforation should go directly to CT and the regional oesophago-gastric team; routine diagnostic endoscopy can worsen an uncontrolled perforation.

Synopsis

Differentiate major causes of oesophagitis from history, endoscopy and tissue, and act urgently on caustic injury, perforation, bleeding and severe infection.

  • Oesophagitis is a mucosal injury pattern; reflux, tablets, infection, caustic exposure, radiation and immune disease require different treatments.
  • Heartburn and regurgitation favour reflux, while odynophagia is a stronger clue to ulceration, infection, pill injury or severe erosive inflammation.
  • Pill oesophagitis follows prolonged mucosal contact, commonly after a tablet is swallowed with little water or immediately before lying down.
  • Bisphosphonates, tetracyclines, potassium chloride, iron, NSAIDs and selected antimicrobials are recognised culprits, but a full medicine timeline is essential.
  • Candida often produces white adherent plaques in immunocompromised people; HSV causes discrete ulcers and CMV typically larger linear ulcers, but histology and context confirm.
  • Oropharyngeal thrush supports oesophageal candidiasis but can be absent; odynophagia in advanced immunosuppression deserves prompt assessment.
  • Caustic injury severity is not reliably predicted by oral burns or early symptoms, and damage may evolve after ingestion.
  • Do not induce emesis or neutralise an acid with alkali after a corrosive exposure because re-exposure, heat and aspiration can increase injury.
  • Endoscopy should describe distribution and severity and obtain site-appropriate biopsies; infection, malignancy and eosinophilic disease may coexist or mimic one another.
  • A patient who develops dysphagia, odynophagia, retrosternal pain or new heartburn while taking alendronate should stop it and seek medical review under the SmPC advice.

Key red flags

Viral ulcerative oesophagitis

Severe odynophagia, chest pain and discrete or linear ulcers occur in profound cellular immunosuppression; HSV and CMV require correctly targeted biopsy and distinct antivirals.

Caustic aerodigestive injury

Drooling, oral pain, dysphagia, stridor, chest or abdominal pain, vomiting and haematemesis follow corrosive exposure, but severe internal injury can occur without dramatic oral burns.

Perforation or mediastinitis

Abrupt severe pain, tachycardia, fever, shock, subcutaneous emphysema, pleural fluid or pneumomediastinum demands emergency CT and specialist surgical treatment.

Investigation priorities

01
Detailed medicine and swallowing historyFirst step

Identify a plausible tablet cause and prevent recurrence.

Management branches

OdynophagiaClassify ulcerative oesophagitis

Pain on swallowing or acute retrosternal pain suggests mucosal ulceration.

  1. Assess fluid intake, bleeding, sepsis and airway or perforation signs, admitting patients who cannot maintain hydration or are systemically unwell.
  2. Build medicine, immune, infection, reflux and radiation timelines; stop a likely injurious tablet when safe and contact its prescriber for an alternative.
  3. Arrange endoscopy and targeted biopsy when infection, severe ulceration, malignancy or persistent symptoms are possible, with prompt microbiology or histology requests.
  4. Treat the established cause and review response; lack of improvement should trigger reconsideration of co-infection, resistant organism, cancer or motility-related stasis.

Key medicines

Omeprazole for acid-mediated injuryA common licensed adult regimen for reflux oesophagitis is 20 mg orally once daily for four weeks, extending to eight weeks or using 40 mg daily for severe disease under product guidance.Acid suppression does not treat Candida, viral infection or transmural caustic necrosis. Investigate alarm symptoms, review interactions and reduce to the lowest effective maintenance dose after healing.
Fluconazole for oesophageal candidiasisBNF adult treatment is 200–400 mg orally or intravenously on day one, then 100–200 mg once daily for 7–21 days, with longer treatment in selected severely immunocompromised patients.Adjust for renal function and review QT prolongation, liver injury, pregnancy and major CYP interactions, including anticoagulants. Failure should prompt endoscopy, susceptibility or alternative-organism assessment rather than blind prolongation.
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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.

  • NICE CG184 reflux and dyspepsiaAcid-mediated oesophagitis management and alarm-feature investigation.
  • Alendronic acid summary of product characteristicsOfficial swallowing instructions and oesophageal-injury warnings.
  • BNF fluconazole drug monographCurrent UK oesophageal-candidiasis regimen and safety information.
  • UKHSA National Poisons Information Service overviewOfficial access route to TOXBASE and specialist poisons advice.
  • GOV.UK sodium hypochlorite toxicologyCurrent official corrosive-exposure and delayed-sequelae information.

Editorial contact: Doctor’s Passport editorial team. Source-check date is separate from clinical approval. Report a content problem · Content changes

Authoring stateRapid draftClinical stateAwaiting reviewJurisdictionUnited Kingdom