This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
[{'content': "A child develops non-blanching Macules and papules on lower extremities, mild abdominal pain and skin biopsy showed IgA deposition. Most appropriate diagnosis is – \nSelect and explain. \nA. Drug induced vasculitis, B. HSP, C. Wegener's granulomatosis, D. Kawasaki disease", 'role': 'user'}, {'content': 'Answer: B \nExplanation: H.S. purpura is characterized by a tetrad of\nPurpura,\nArthritis,\nGlomerulonephritis and\nAbdominal pain.\n\nDiagnosis of H.S.purpura\n\nDiagnosis is based on signs and symptoms.\nSkin biopsy demonstrates leukocytoclastic vasculitis with IgA and C3 deposition.\nRenal biopsy demonstrates IgA in mesangium.', 'role': 'assistant'}]