title: Persistent cutaneous larva migrans due to Ancylostoma species.
abstract: Cutaneous larva migrans is considered to be a self-limited parasitic infection of about 2 to 8 weeks' duration, though it has been reported to persist for as long as 55 weeks. In this case, a healthy 47-year-old white man had multiple serpiginous lesions typical of cutaneous larva migrans for 18 months. A biopsy taken 2 months before presentation showed a parasite consistent with Ancylostoma species deep in a hair follicle. The patient initially responded to topical thiabendazole, but relapse occurred when therapy was discontinued. Oral thiabendazole cured the problem after 22 months of infestation. Cutaneous larva migrans may sometimes be long-standing, here almost 2 years, even in a healthy patient. Organisms may reside deep in the hair follicles. Topical thiabendazole may not penetrate to this depth, necessitating oral thiabendazole therapy.
authors.affiliation: Dermatology Service, Department of Medicine, Fitzsimons Army Medical Center, Aurora, CO 80045, USA.
authors.forename: T K
authors.initials: TK
authors.lastname: Richey
authors.forename: R H
authors.initials: RH
authors.lastname: Gentry
authors.forename: J E
authors.initials: JE
authors.lastname: Fitzpatrick
authors.forename: A M
authors.initials: AM
authors.lastname: Morgan
mesh_terms: D000284:Administration, Oral; D000724:Ancylostomiasis / Q000188:drug therapy*; D000969:Antinematodal Agents / Q000008:administration & dosage / Q000627:therapeutic use; D006801:Humans; D007815:Larva Migrans / Q000188:drug therapy* / Q000469:parasitology*; D008297:Male; D008875:Middle Aged; D013827:Thiabendazole / Q000008:administration & dosage / Q000627:therapeutic use
chemical_list: D000969:Antinematodal Agents; D013827:Thiabendazole