Behçet disease — SCE Rheumatology MCQ

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EasyVasculitisBehçet diseaseSCE Rheumatology

A 32-year-old man has recurrent oral ulcers, genital ulcers and painful red eye. Examination shows erythema nodosum-like lesions are present. Investigations show pathergy test is positive. What is the most likely diagnosis?

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Correct answer: B — Behçet disease

The clinical pattern and investigations are most consistent with Behçet disease. The main distractors share some inflammatory features but do not match the vascular territory, antibody profile and organ pattern as well. Correctly identifying the vasculitis subtype matters because induction therapy, relapse risk and screening differ.

Reference: EULAR ANCA-associated vasculitis recommendations; BSR guideline; BNF