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It is possible that the main title of the report Ataxia, Hereditary, Autosomal Dominant 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.
The hereditary ataxias are a group of neurological disorders (ataxias) of varying degrees of rarity that are inherited, in contrast to a related group of neurological disorders that are acquired through accidents, injuries, or other external agents. The hereditary ataxias are characterized by degenerative changes in the brain and spinal cord that lead to an awkward, uncoordinated walk (gait) accompanied often by poor eye-hand coordination and abnormal speech (dysarthria). Hereditary ataxia in one or another of its forms may present at almost any time between infancy and adulthood.
The classification of hereditary ataxias is complex with several schools of thought vying for recognition. This report follows the classification presented by Dr. Thomas D. Bird and the University of Washington's GeneReviews.
This classification is based on the pattern of inheritance or mode of genetic transmission of the disorder: i.e., autosomal dominant, autosomal recessive and X-linked. The autosomal dominant ataxias, also called the spinocerebellar ataxias, are usually identified as SCA1 through SCA31. Also included are several "episodic ataxias", as well as a very rare disorder known as DRPLA (dentato-rubro-pallido-luysian atrophy). This report deals with the autosomal dominant hereditary ataxias. There are fewer autosomal recessive hereditary ataxias than autosomal dominant hereditary ataxias, and X-linked forms of ataxia are very rare.
At one time, all autosomal dominant ataxias were called Marie's ataxia and all autosomal recessive ataxias were called Friedreich's ataxia. This is no longer appropriate because there is now much more accurate information about these diseases.
WE MOVE (Worldwide Education and Awareness for Movement Disorders)
5731 Mosholu Avenue
Bronx, NY 10471
National Ataxia Foundation
2600 Fernbrook Lane Suite 119
Minneapolis, MN 55447
NIH/National Institute of Neurological Disorders and Stroke
P.O. Box 5801
Bethesda, MD 20824
Canadian Association for Familial Ataxias - Claude St-Jean Foundation
3800 Radisson Street Office 110
Quebec, H1M 1X6
Genetic and Rare Diseases (GARD) Information Center
PO Box 8126
Gaithersburg, MD 20898-8126
Movement Disorder Society
555 E. Wells Street
Milwaukee, WI 53202-3823
This is an abstract of a report from the National Organization for Rare Disorders (NORD). A copy of the complete report can be downloaded free from the NORD website for registered users. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational therapies (if available), and references from medical literature. For a full-text version of this topic, go to www.rarediseases.org 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. 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 firstname.lastname@example.org
Last Updated: 3/25/2011
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