Hookworm eggs found in the stool of animals hatch, and the larvae infest the soil and vegetation around the droppings. The larvae then migrate between these two layers at rates of almost 1 inch per day. Their passage produces an inflammatory response that follows their progress beneath the skin. The lesion is raised, long, and snakelike. Its curving path marks the migratory trail of the larvae.
Treatment speeds resolution of the condition.
However, untreated, the larvae die within a few weeks to months. Public sanitation has decreased the incidence of all hookworm infestation in the United States. Worming of cats and dogs can reduce the incidence among domestic and tame animals. No laboratory testing is necessary. Topical thiabendazole applied to the skin over the area of larval migration is the treatment of choice.