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strongyloidiasis : ウィキペディア英語版 | strongyloidiasis
Strongyloidiasis is a human parasitic disease caused by the nematode (roundworm) called ''Strongyloides stercoralis'', or sometimes ''S. fülleborni'' which is a type of helminth. It belongs to a group of nematodes called hookworms. This intestinal worm can cause a number of symptoms in people, principally skin symptoms, abdominal pain, diarrhea and weight loss. In some people, particularly those who require corticosteroids or other immunosuppressive medication, ''Strongyloides'' can cause a hyperinfection syndrome that can lead to death if untreated. The diagnosis is made by blood and stool tests. The drug Ivermectin is widely used in the treatment of strongyloidiasis. Strongyloidiasis is a type of soil-transmitted helminthiasis. It is thought to affect 30–100 million people worldwide, mainly in tropical and subtropical countries. It belongs to the group of neglected tropical diseases, and worldwide efforts are aimed at eradicating the infection. ==Signs and symptoms==
Strongyloides infection occurs in five forms. On acquiring the infection, there may be respiratory symptoms (Löffler's syndrome). The infection may then become chronic with mainly digestive symptoms. On reinfection (when larvae migrate through the body), there may be respiratory, skin and digestive symptoms. Finally, the hyperinfection syndrome causes symptoms in many organ systems, including the central nervous system.
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