Moyamoya Disease

Introduction: Moyamoya Disease

Moyamoya Disease: Moyamoya disease is a rare, progressive cerebrovascular disorder characterized by the narrowing or occlusion of major blood vessels leading ... more about Moyamoya Disease.

Moyamoya Disease: Brain blood vessel disorder. More detailed information about the symptoms, causes, and treatments of Moyamoya Disease is available below.

Symptoms of Moyamoya Disease

• Stroke
• Recurrent transient ischemic attacks
• Hemiparesis
• Seizures
• Disturbed consciousness

See full list of 10 symptoms of Moyamoya Disease

Diagnostic Tests for Moyamoya Disease

• Cerebral angiography

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Causes of Moyamoya Disease

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Treatments for Moyamoya Disease

• Symptomatic and supportive

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Prognosis for Moyamoya Disease

Prognosis for Moyamoya Disease: Poor. Progressive mental deterioration. Stroke and death.

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Statistics for Moyamoya Disease

• Medical statistics for Moyamoya Disease
• Prevalence and incidence statistics for Moyamoya Disease
• Death and Mortality statistics for Moyamoya Disease
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Types of Moyamoya Disease

• Familial moyamoya disease - a genetic form of the condition.

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Medical Guidebooks and Ebooks for Moyamoya Disease

• Icon Health Sourcebook for Moyamoya Disease

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Article Excerpts about Moyamoya Disease

Moyamoya disease is a rare, progressive cerebrovascular disorder characterized by the narrowing or occlusion of major blood vessels leading into the brain, and the formation of abnormal blood vessels called moyamoya vessels. First described in Japan in the 1960’s, the disease has since been found in the United States, Europe, Australia, and Africa. (Source: excerpt from NINDS Moyamoya Disease Information Page: NINDS)

Definitions of Moyamoya Disease:

A chronic cerebral vasculopathy primarily occurring in childhood and characterized by slowly progressive carotid artery narrowing and occlusion at the base of the brain. An extensive network of anastomoses forms between branches of the carotid arteries, resulting in a characteristic angiographic appearance. The condition may be idiopathic (classic moyamoya disease) or occur in association with ANEMIA, SICKLE CELL; DOWN SYNDROME; CRANIOCEREBRAL TRAUMA; RADIOTHERAPY induced arterial injury; NEUROFIBROMATOSIS; and other diseases. Clinical manifestations include hemiparesis, headache, seizures, and delayed mental development. In older individuals, this disease may present as SUBARACHNOID HEMORRHAGE. (From Adams et al., Principles of Neurology, 6th ed, p831; Clin Neurol Neurosurg 1997 Oct;99 Suppl 2:S36-8) - (Source - Diseases Database)

Moyamoya Disease is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH). This means that Moyamoya Disease, or a subtype of Moyamoya Disease, affects less than 200,000 people in the US population.
Source - National Institutes of Health (NIH)

Ophanet, a consortium of European partners, currently defines a condition rare when it affects 1 person per 2,000. They list Moyamoya Disease as a "rare disease".
Source - Orphanet