Atypical Hemolytic Uremic Syndrome

National Organization for Rare Disorders, Inc.

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It is possible that the main title of the report Atypical Hemolytic Uremic Syndrome is not the name you expected.

Disorder Subdivisions

  • None

General Discussion

Atypical hemolytic uremic syndrome (aHUS) is an extremely rare disease characterized by hemolytic anemia, low platelet count (thrombocytopenia) and acute renal failure. It is a distinctly different illness from hemolytic uremic syndrome caused by particular strains of the bacterium E.coli producing Shiga toxins, most frequently the 0157:H7 strain (Stx HUS). While Stx HUS typically is preceded by a gastroenteritis and is associated with infection by Shiga toxin producing-E.coli, there is substantial evidence that aHUS is a genetic disorder.

Atypical hemolytic uremic syndrome may become a chronic condition, and patients with aHUS may experience repeated attacks of the disorder. When children with Stx HUS recover from the life-threatening initial episode, they are likely to respond well to supportive treatment and to make a good recovery. Children with aHUS are much more likely to develop chronic serious complications such as kidney failure and severe high blood pressure.

Supporting Organizations

American Kidney Fund, Inc.

11921 Rockville Pike
Suite 300
Rockville, MD 20852
Tel: (800)638-8299

Foundation for Children with Atypical HUS

c/o Bill Biermann
7018 Forest Oak Drive
Barnhart, MO 63012
Tel: (636)942-4425
Fax: (314)429-3790

Genetic and Rare Diseases (GARD) Information Center

PO Box 8126
Gaithersburg, MD 20898-8126
Tel: (301)251-4925
Fax: (301)251-4911
Tel: (888)205-2311

National Kidney Foundation

30 East 33rd Street
New York, NY 10016
Tel: (212)889-2210
Fax: (212)689-9261
Tel: (800)622-9010

For a Complete Report

This is an abstract of a report from the National Organization for Rare Disorders (NORD). For a full-text version of this report, go to and click on Rare Disease Database under "Rare Disease Information".

The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only.

It is possible that the title of this topic is not the name you selected. Please check the Synonyms listing to find the alternate name(s) and Disorder Subdivision(s) covered by this report.

This disease entry is based upon medical information available through the date at the end of the topic. Since NORD's resources are limited, it is not possible to keep every entry in the Rare Disease Database completely current and accurate. Please check with the agencies listed in the Resources section for the most current information about this disorder.

Last Updated:  7/1/2015
Copyright  2012 National Organization for Rare Disorders, Inc.