Schistosomiasis: Difference between revisions

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Revision as of 18:52, 10 October 2013


  • Caused by parasitic trematodes of the species Schistosoma
  • Reservoir is freshwater snails
  • Endemic in areas of Africa and Southern Asia
  • The Cercariae (the stage of trematode released by the snail) can infect by direct penetration through the skin


  • UTI
  • STD
  • Intestional parasites
  • Travelers diarrhea


  • Mostly a chronic condition
    • Second most common cause of esophageal varicies worldwide
    • Greatly elevated bladder cancer rates in endemic areas
    • Can cause renal failure, liver failure, pulmonary hyptertension, GI bleeds and rarely CNS symptoms
      • Mostly through fibrosis of affected organs
    • Genitourinary schistosomiasis
      • Caused by sores in the genital tract
      • May persist even after treatment
      • Greatly increases risk of HIV infection
  • Acute presentations
    • Cutaneous rash/itching from cercariae penetration
    • Fever, Abdominal pain, Fatigue, Cough, Diarrhea, Eosinophilia
  • Diagnosis
    • ELISA
    • Stool and Urine for ova/parasites
      • biopsy may be needed for those who do not show ova/parasites in stool/urine


  • Praziquantel


  • Wikipedia