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IgA vasculitis — RACP Paediatrics MCQ

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HardRheumatology and dermatologyIgA vasculitisRACP Paediatrics

A 6-year-old has palpable purpura over the buttocks and legs, ankle swelling and colicky abdominal pain. Urine dipstick shows 2+ blood and 1+ protein, but creatinine is normal. What is the most appropriate investigation?

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

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Correct answer: D — Serial blood pressure and urinalysis follow-up

IgA vasculitis is primarily a clinical diagnosis, but renal involvement can evolve after the rash. Serial blood pressure and urinalysis are essential to detect nephritis. Skin biopsy is reserved for atypical cases rather than routine typical presentations.

Reference: RCH Henoch-Schonlein purpura guideline; RACP Knowledge Guides