National Organization for Rare Disorders, Inc.
It is possible that the main title of the report Susac's 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.
Susac's syndrome is a rare disorder characterized by impaired brain function (encephalopathy), blockage (occlusion) of the arteries that supply blood to the retina (branched retinal arterial occlusion [BRAO]), and hearing loss. Two main forms of Susac's syndrome have been identified. In one form, encephalopathy is the main finding, in the other form, BRAO and hearing loss occur without signs of brain disease. The specific symptoms and severity of Susac's syndrome vary from one person to another. The encephalopathic form of Susac's syndrome often improves spontaneously even without treatment (self-limited); the other form is frequently a chronic disorder. Although considered rare, Susac's syndrome is being recognized more often worldwide and its true frequency in the general population is unknown.
Susac's syndrome is considered an autoimmune endotheliopathy. An autoimmune disorder occurs when the body's own immune system mistakenly attacks healthy tissue. An endotheliopathy is any disorder that primarily involves the endothelium, which is the thin layer of cells that line the walls of blood vessels. In Susac's syndrome, the smallest blood vessels (microvasculature) of the circulatory system such as the capillaries, venules and arterioles are affected. Specifically, the microvasculature of the brain, retinas and inner ears are involved.
American Autoimmune Related Diseases Association, Inc.
22100 Gratiot Ave.
East Detroit, MI 48021
Better Hearing Institute
1444 I Street NW
Washington, D.C. 20005
NIH/National Institute of Neurological Disorders and Stroke
P.O. Box 5801
Bethesda, MD 20824
Genetic and Rare Diseases (GARD) Information Center
PO Box 8126
Gaithersburg, MD 20898-8126
American Academy of Audiology
11730 Plaza America Drive, Suite 300
Reston, VA 20190
Hearing Loss Association of America
7910 Woodmont Avenue
Bethesda, MD 20814
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The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only. NORD recommends that affected individuals seek the advice or counsel of their own personal physicians.
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.
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Last Updated: 4/1/2009
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