Mycology/Parasitology USMLE Step 1 Practice Question
A 6-year-old boy presents with a pruritic rash on exposed skin areas after playing in a grassy field. Vital signs are normal (BP 95/60, HR 98, RR 20, Temp 37.2°C, SpO2 98%). Linear streaks of erythema and vesicles appear on his arms and legs. KOH mount of skin scraping is negative. Serum IgE is elevated at 285 IU/mL. He denies fever or systemic symptoms. Which of the following is the most likely diagnosis?
Answer choices
- AMolluscum contagiosum
- BCercarial dermatitis (schistosomiasis)Correct answer
- CTinea corporis
- DCandida intertrigo
- EDermatophyte infection
- FCutaneous larva migrans
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