Sandworms are the larvae of the dog or cat hookworm which burrow under the skin, especially over the feet, buttocks and genitalia. Infestation usually occurs when the child stands or sits in sand contaminated with dog or cat faeces. The pink, raised, red S-shaped burrows of the larvae can be seen and are very itchy. Treat with oral albendazole 1 tablet daily for 3 days.
Thiabendazole 10% in petroleum jelly (Vaseline) can also be applied locally, but is difficult to obtain. Ethyl chloride spray can also be applied to the affected area but it is very painful.