Cutaneous Larva Migrans

Cutaneous larva migrans (CLM) is a dermatologic condition caused by the migration of animal nematode larvae, most commonly the larvae of the dog and cat hookworm, Ancylostoma braziliense. The larvae are found in sand or soil where infected animals have defecated; when human skin contacts contaminated sand or soil, the larvae penetrate the skin and migrate in the epidermis leading to marked pruritis and characteristic erythematous serpiginous tracks. Symptoms typically start 10 to 15 days after infection, but delayed onset has been reported. CLM is most often reported in returned travelers who had exposure of unprotected skin to sand or soil in areas where animal hookworms are endemic. CLM can be prevented by wearing shoes and avoiding contact with contaminated sand or soil. Treatment is oral albendazole or ivermectin.