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Cutaneous larva migrans (“CLM”) is a skin disease in humans, caused by the larvae of various nematode parasites, the most common of which is Ancylostoma braziliense.
Sometimes referred to as “creeping eruption” or “ground itch”, in some parts of the Southern USA this condition is also referred to as “sandworms,” as the larvae like to live in sandy soil.
These parasites are found in dog and cat feces and although they are able to infect the deeper tissues of these animals (through to the lungs and then the intestinal tract), in humans they are only able to penetrate the outer layers of the skin and thus create the typical wormlike burrows visible underneath the skin. The parasites apparently lack the collagenase enzymes required to penetrate through the basement membrane deeper into the skin.
The infection causes a red, intense itching eruption. The itching can become very painful and if scratched may allow a secondary bacterial infection to develop.
CLM can be treated in a number of different ways:
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