[Parasitic diarrhea].

After a trip to tropical areas, diarrhea is frequent and is most often due to a parasite. Amebiasis is the principal cause of acute diarrhea. The other intestinal parasites cause chronic diarrhea, including in temperate countries; these include Giardia, Cryptosporidium, and Microsporidium species in immunocompromised patients. Helminthic diseases, either cosmopolitan (Ascaris, Enterobius, and Taenia) or tropical (hookworms, Strongyloides, and Schistosoma), cause diarrhea with blood hypereosinophilia. Diagnosis is based on the examination of stool. Treatment is rapid, effective and well tolerated, while prophylaxis is often difficult to explain to the populations concerned.