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Kawasaki disease — USMLE Step 3 MCQ

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HardPediatrics (well-child, chronic management)Kawasaki diseaseUSMLE Step 3

A 6-year-old has fever for six days, bilateral nonpurulent conjunctivitis, cracked lips, strawberry tongue, cervical lymphadenopathy, polymorphous rash, and thrombocytosis. Which diagnosis is most likely?

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Correct answer: B — Kawasaki disease

Prolonged fever with the stated mucocutaneous findings is Kawasaki disease. Prompt recognition matters because treatment reduces coronary complications; the alternatives do not fit the complete clinical pattern.

Reference: American Heart Association, Kawasaki Disease Statement: https://www.ahajournals.org/doi/10.1161/CIR.0000000000000484