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Henoch-Schonlein purpura — ABEM Board MCQ

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EasyPediatric emergenciesHenoch-Schonlein purpuraABEM Board

A 6-year-old boy arrives with abdominal pain and leg rash after an upper respiratory infection. Triage acuity is ESI 3; BP 102/62 mm Hg, HR 104/min. He has palpable purpura on the buttocks and legs, ankle swelling, and mild hematuria on urinalysis. Which of the following is the most likely diagnosis?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: A — IgA vasculitis

Palpable purpura in dependent areas with arthralgia, abdominal pain, and renal findings is typical of IgA vasculitis.

Reference: AAP pediatric vasculitis guidance