Typical Hemolytic Uremic Syndrome

National Organization for Rare Disorders, Inc.

It is possible that the main title of the report Typical Hemolytic Uremic Syndrome is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.


  • Gasser Syndrome
  • HUS

Disorder Subdivisions

  • None

General Discussion

Hemolytic-Uremic Syndrome (HUS) is a very rare disorder that primarily affects young children between the ages of one and 10 years, particularly those under the age of four years. In many cases, the onset of HUS is preceded by a flu-like illness (gastroenteritis) characterized by vomiting, abdominal pain, fever, and diarrhea, which, in some cases, may be bloody. Symptoms of Hemolytic-Uremic Syndrome usually become apparent three to 10 days after the development of gastroenteritis and may include sudden paleness (pallor), irritability, weakness, lack of energy (lethargy), and/or excretion of abnormally diminished amounts of urine (oliguria). The disease typically progresses to include inability of the kidneys to process waste products from the blood and excrete them into the urine (acute renal failure); a decrease in circulating red blood cells (microangiopathic hemolytic anemia); a decrease in circulating blood platelets, which assist in blood clotting functions (thrombocytopenia); and the abnormal accumulation of platelets within certain blood vessels (microthrombi), reducing the blood flow to several organs (e.g., kidneys, pancreas, brain) potentially leading to multiple organ dysfunction or failure. In some cases, neurological problems may be present at the onset of Hemolytic-Uremic Syndrome or may occur at any time during the disorder's progression. Neurological symptoms may include dizziness, seizures (partial or generalized), disorientation or confusion, and/or loss of consciousness (coma). The onset of Hemolytic-Uremic Syndrome is most frequently associated with infection by a particular strain (O157:H7) of Escherichia coli (E. coli) bacterium. Occasionally, adults may be affected by Hemolytic-Uremic Syndrome.


American Kidney Fund, Inc.
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National Kidney Foundation
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NIH/National Institute of Allergy and Infectious Diseases
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NIH/National Institute of Diabetes, Digestive & Kidney Diseases
Endocrine Diseases Metabolic Diseases Branch
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National Institute of Neurological Disorders and Stroke (NINDS)
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Tel: (301)496-5751
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Tel: (800)352-9424
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World Health Organization (WHO) Regional Office for the Americas (AMRO)
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Genetic and Rare Diseases (GARD) Information Center
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For a Complete Report

For a Complete Report

This is an abstract of a report from the National Organization for Rare Disorders, Inc. ® (NORD). A copy of the complete report can be obtained for a small fee by visiting the NORD website. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational treatments (if available), and references from medical literature. For a full-text version of this topic, see http://www.rarediseases.org/search/rdblist.html

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