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Genetic and Rare Diseases Information Center (GARD)

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Other Names for this Disease
  • Threadworm Infection
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Strongyloidiasis is a parasitic disease caused by the roundworm Strongyloides stercoralis (S. stercoralis).[1][2] People catch the infection when they come in contact with soil contaminated with the worms.[2] While there are often no symptoms, abdominal pain, cough, diarrhea, rash, unintentional weight loss and vomiting may occur. The infection is treated with anti-worm medications such as ivermectin.[2] Strongyloidiasis is found in tropical and subtropical areas, but can also be found in temperate regions, including the southern United States.[1]
Last updated: 9/20/2010


  1. Strongyloidiasis. National Institute of Allergy and Infectious Diseases (NIAID). 2008; Accessed 9/20/2010.
  2. Strongyloidiasis. MedlinePlus. 2008; Accessed 9/20/2010.
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Basic Information

  • You can obtain information on this topic from the Centers for Disease Control and Prevention (CDC). The CDC is recognized as the lead federal agency for developing and applying disease prevention and control, environmental health, and health promotion and education activities designed to improve the health of the people of the United States.
  • MedlinePlus was designed by the National Library of Medicine to help you research your health questions, and it provides more information about this topic.
  • The Merck Manuals Online Medical Library provides information on this condition. Click on the link to view the information.
  • The National Institute of Allergy and Infectious Diseases (NIAID) supports scientists developing better ways to diagnose, treat, and prevent the many infectious, immunologic, and allergic diseases that afflict people worldwide. Click on the link to view information on this topic. 

In Depth Information

  • Medscape Reference provides information on this topic. Click on the link to view this information. You may need to register to view the medical textbook, but registration is free.
  • MeSH® (Medical Subject Headings) is a terminology tool used by the National Library of Medicine. Click on the link to view information on this topic.
  • PubMed is a searchable database of medical literature and lists journal articles that discuss Strongyloidiasis. Click on the link to view a sample search on this topic.