A case with severe diarrhoea and Strongyloides stercoralis infection.

A case with severe diarrhoea and Strongyloides stercoralis infection is described. Further examination showed that the patient also had abnormal colonization of the duodenum with Hafnia alvei and that this disappeared when the Strongyloides infection was treated with mebendazole. Symptoms such as abdominal pain, diarrhoea, "skin rash" and malabsorption in association with blood eosinophilia should arouse suspicion of strongyloidiasis.