Strongyloides stercoralis infection presenting as generalized prurigo nodularis and lichen simplex chronicus.

Strongyloides Stercoralis is a parasitic nematode that develops an autoinfective life cycle within the gastrointestinal tract of its human host. The infection produces peripheral eosinophilia and cutaneous eruptions, as well as gastrointestinal or respiratory symptoms. Detection of S stercoralis is difficult through stool examination, but may be demonstrated by ELISA for IgG antibody against the parasite. We describe a patient with chronic S stercoralis infection initially presenting with generalized prurigo nodularis and lichen simplex chronicus.