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IgA vasculitis — MCCQE Part 1 MCQ

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ModerateRash in ChildIgA vasculitisMCCQE Part 1

A 6-year-old has palpable purpura on the legs, abdominal pain, arthralgia and microscopic haematuria after an upper respiratory infection. Which of the following is the most appropriate next step?

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

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Correct answer: B — Monitor blood pressure and urinalysis and provide supportive care unless severe features develop

Monitor blood pressure and urinalysis and provide supportive care unless severe features develop is the single best answer because the age, timing, examination findings and investigations in the vignette fit IgA vasculitis better than the alternatives. The most tempting distractor is less appropriate because it either treats a neighbouring presentation, delays a time-critical intervention, or ignores a key discriminator in the stem. The remaining options are suboptimal because they would miss the diagnosis, use an investigation or treatment in the wrong sequence, or fail to address safety and follow-up. Canadian practice should be anchored to CPS vasculitis guidance, with attention to acuity, safety-netting and local provincial pathways.

Reference: CPS vasculitis guidance