To our knowledge, there is no evidence that Susac syndrome is inherited, and no familial cases of Susac syndrome have been reported. Cases described in the medical literature have occurred in people with no known history of the condition in their family.
Last updated: 7/21/2014
What causes Susac syndrome?
The exact cause of Susac syndrome currently is not known. The condition is thought to be an autoimmune disorder. Autoimmune disorders occur when the immune system (which fights off infections) mistakenly attacks the tissues of the body. When this occurs, it can cause swelling of the small blood vessels that supply blood to the brain, retina, and inner ear. This swelling can cause the blood vessels to completely close up so that parts of the body are not getting enough blood or oxygen. The symptoms of Susac syndrome are caused by damage to small blood vessels and the decreased ability of these blood vessels to carry blood and oxygen.
Last updated: 2/20/2017
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