Cutaneous larva migrans is a skin disease in humans, caused by a parasitic larvae called Ancylostoma braziliense (among other hookworms). These parasites are found in dog and cat feces and are able to penetrate the outer layers of the skin and creep around underneath the skin.

This causes a red itching eruption, and usually a serpentine track as the parasite creeps around. It's often itchy and can be painful and may cause secondary bacterial infection.

In some parts of the Southern USA this condition is coloquially referred to as "sandworms."

This can be treated by Thiabendazole applied locally, although this is now outdated, or with systemic use of albendazole tablets. Liquid nitrogen is sometimes used.

See also

• Visceral larval migrans

Infectious diseases | Zoonoses