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Henoch-Schonlein Purpura — RACP Paediatrics MCQ

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EasyRheumatologyHenoch-Schonlein PurpuraRACP Paediatrics

A 7-year-old presents with a widespread purpuric rash on the buttocks and lower limbs, abdominal pain, and arthralgia of the knees and ankles. Platelet count is normal. What is the most likely diagnosis?

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Correct answer: A — Henoch-Schonlein purpura (IgA vasculitis)

HSP/IgA vasculitis: palpable purpura (predominantly buttocks/lower limbs), arthralgia, abdominal pain, with normal platelets. Renal involvement (haematuria, proteinuria) occurs in 20-50% and determines long-term prognosis.

Reference: RCH Melbourne – 2024 – Clinical Practice Guidelines: HSP