Previously Healthy in Pediatrics — Case | Pediatric Infectious | SMLE Q#702

SMLE Question #702

Pediatrics Pediatric Infectious

Objective: OBJ-113

Last updated: February 2026
A previously healthy 3-year-old boy has 6 days of fever to 39.5°C despite antipyretics. On day 4, he developed a diffuse erythematous rash on the trunk and extremities. Over the last 2 days, he developed bilateral nonpurulent conjunctival injection, cracked erythematous lips, and a strawberry tongue. He is irritable. Examination shows a polymorphous maculopapular rash and a 1.5-cm firm, nontender right anterior cervical lymph node. What is the most likely diagnosis?

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