(BMJ)—A 26-yo woman presented w/ an itchy rash on her foot that started as a small blister 6 days after returning from Barbados. It had not responded to topical steroids or antifungals. Exam: red, serpiginous rash on dorsum of right foot. What is the dx?
Epidermal dermatophytosis
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Erythema migrans
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Cutaneous larva migrans
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Migratory myiasis
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Larva currens
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