Viral Infections USMLE Step 1 Practice Question
A 7-year-old boy is brought to the clinic by his mother with a 3-day history of cough, coryza, and conjunctivitis. He developed a low-grade fever (38.5°C) 2 days ago. On examination, you note a maculopapular rash that started on the hairline and face yesterday and has progressively spread downward to involve the trunk and extremities. The rash is blanching and does not itch. Inside the mouth, you visualize small white spots with erythematous halos on the buccal mucosa opposite the molars. Vital signs are stable with normal oxygen saturation. CBC shows relative lymphocytosis. Which of the following is the most likely diagnosis?
Answer choices
- AMeaslesCorrect answer
- BVaricella
- CRubella
- DRoseola infantum
- EErythema infectiosum
- FScarlet fever
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