Infectious Disease Compendium

Cutaneous Larva Migrans

Diagnosis

Also known as the creeping eruption. A serpentiginous, intensely pruritic, rash caused by the hookworm larva wandering around in the skin. Since humans are not the usual hosts (that intended host is the dog or cat), the larva gets lost and eventually dies.

Microbiology

Ancylostoma braziliense (the most common pathogen), Ancylostoma canium, Uncinaria stenocephala, Bunostomum phebotomum.

Epidemiologic Risks

Lying in cat poo or dog poo on a beach where they (dogs and cats, not humans) have used the sand as a toilet.

Empiric Therapy

Ivermectin 12 mg single dose.

Treatment with a single 400-mg oral dose of albendazole gives cure rates of 46%–100%; a single 12-mg oral dose of ivermectin gives cure rates of 81%–100% (PubMed).

Topical therapies don't do much.

Pearls

Also called creeping eruption, ground itch, sandworms, and plumber's itch.

Curious Cases

Relevant links to my Medscape blog

The World is a Litter Box

Last Update: 06/12/18.