Cutaneous larva migrans

Cutaneous larva migrans (creeping eruption) should be suspected in any pruritic, erythematous lesion with a serpiginous eruption on the skin, especially the hands and feet of a person from a subtropical or tropical area. It is caused by the larvae of dog or cat hookworms penetrating and migrating throughout human skin, the larva always being just ahead of the lesion it causes. The diagnosis is based on the classic clinical appearance and by eosinophilia. Biopsy is usually not indicated. The problem is usually self-limiting.

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