Moyamoya Syndrome

Content provided by National Organization for Rare Disorders

Important

It is possible that the main title of the report Moyamoya 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.

Synonyms

• Moya-moya Disease

Disorder Subdivisions

• None

General Discussion

Moyamoya syndrome is a progressive disorder that affects the blood vessels in the brain (cerebrovascular). It is characterized by the narrowing (stenosis) and/or closing (occlusion) of the carotid artery, the major artery that delivers blood to the brain. Inadequate blood supply leads to reduced oxygen to the brain, and it is this oxygen deprivation that causes the signs of Moyamoya. Those signs most typically include paralysis of the feet, legs or the upper extremities. Headaches, various vision problems, mental retardation, and psychiatric problems may also occur.



Approximately 10% of cases of Moyamoya syndrome are due to a genetic cause and are termed primary Moyamoya syndrome. Secondary Moyamoya syndrome refers to cases in which the syndrome is a consequence or result of another underlying disorder. In secondary Moyamoya syndrome, when it is not a result of a genetic cause, it is important for the physician to determine the root underlying cause.

.

Resources

National Institute of Neurological Disorders and Stroke (NINDS)

31 Center Drive

8A07

Bethesda, MD 20892-2540

Tel: (301)496-5751

Fax: (301)402-2186

Tel: (800)352-9424

Email: braininfo@ninds.nih.gov

Internet: http://www.ninds.nih.gov/



MUMS (Mothers United for Moral Support, Inc) National Parent-to-Parent Network

150 Custer Court

Green Bay, WI 54301-1243

USA

Tel: 9203365333

Fax: 9203390995

Tel: 8773365333

Email: mums@netnet.net

Internet: http://www.netnet.net/mums/



Moyamoya.com

PO Box 9602

Wichita, KS 67277

USA

Email: admin@moyamoya.com

Internet: http://www.moyamoya.com

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

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.

For additional information and assistance about rare disorders, please contact the National Organization for Rare Disorders at P.O. Box 1968, Danbury, CT 06813-1968; phone (203) 744-0100; web site www.rarediseases.org or email orphan@rarediseases.org

Last Updated:  10/12/2007

Copyright  1989, 1996, 2003, 2004, 2007 National Organization for Rare Disorders, Inc.

Last updated:	October 12, 2007