National Organization for Rare Disorders, Inc.
Important
It is possible that the main title of the report Muscular Dystrophy, Duchenne
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
- Childhood Muscular Dystrophy
- DMD
- Muscular Dystrophy, Classic X-linked Recessive
- Progressive Muscular Dystrophy of Childhood
- Pseudohypertrophic Muscular Dystrophy
Disorder Subdivisions
- None
General Discussion
Duchenne muscular dystrophy (DMD) is a rare muscle disorder but it is one of the most frequent genetic conditions affecting approximately 1 in 3500 male births worldwide. It is usually recognized between three and six years of age. DMD is characterized by weakness and wasting (atrophy) of the muscles of the pelvic area followed by the involvement of the shoulder muscles. As the disease progresses, muscle weakness and atrophy spread to affect the trunk and forearms and gradually progress to involve additional muscles of the body. The disorder is progressive and most affected individuals require a wheelchair by the teen-age years. Serious life-threatening complications may ultimately develop including disease of the heart muscle (cardiomyopathy) and breathing (respiratory) difficulties.
DMD is caused by changes (mutations) of the DMD gene on the short arm (p) of the X chromosome. The gene regulates the production of a protein called dystrophin that is found in association with the membrane of skeletal and cardiac muscle cells. Dystrophin is thought to play an important role in maintaining the structure of these muscle cells. DMD is classified as a dystrophinopathy. The dystrophinopathies are a spectrum of muscle diseases, each caused by alterations in DMD gene. The severe end of the spectrum is known as Duchenne muscular dystrophy and the less severe as Becker muscular dystrophy.
The dystrophinopathies belong to a large group of diseases known as the muscular dystrophies. These disorders are characterized by specific changes (e.g. variation of muscle fiber size, muscle fiber necrosis and inflammation) in muscle biopsy. The clinical hallmarks include the weakness and waisting of various voluntary muscles of the body. Approximately 30 different disorders make up the muscular dystrophies. The disorders affect different muscles and have different ages of onset, severity and inheritance patterns.
Resources
March of Dimes Birth Defects Foundation
1275 Mamaroneck Avenue
White Plains, NY 10605
Tel: (914)428-7100
Fax: (914)997-4763
Tel: (888)663-4637
Email: Askus@marchofdimes.com
Internet: http://www.marchofdimes.com
Parent Project Muscular Dystrophy
1012 N. University Blvd
158 Linwood Plaza, Suite 220, Fort Lee, NJ 07024
Middletown, OH 45042
USA
Tel: 5134240696
Fax: 5134259907
Tel: 8007145437
Email: Pat@parentprojectmd.org
Internet: http://www.parentprojectmd.org
Muscular Dystrophy Association
3300 E. Sunrise Dr
Tucson, AZ 85718
USA
Tel: 5205292000
Fax: 5205295300
Tel: 8003444863
Email: mda@mdausa.org
Internet: http://www.mdausa.org
Muscular Dystrophy Canada
900-2345 Yonge Street
Toronto
Ontario, Intl M4P 2E5
Canada
Tel: 416-488-0030
Fax: 416-488-7523
Tel: (866)-MUSCLE-8
Email: info@muscle.ca
Internet: http://www.muscle.ca
Muscular Dystrophy Campaign
7-11 Prescott Place
London, SW4 6BS
United Kingdom
Email: info@muscular-dystrophy.org
Internet: http://www.muscular-dystrophy.org
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/
Society for Muscular Dystrophy Information International
P.O. Box 4790
Bridgewater
Nova Scotia, B4V 2X6
Canada
Tel: 902-685-3961
Fax: 902-685-3962
Email: smdi@auracom.com
Internet: http://users.auracom.com/smdi
European Alliance of Neuromuscular Disorders Associations
MDG Malta 4,
Gzira Road
Gzira, Intl GAR 04
Malta
Tel: 00356 21 346688
Fax: 00356 21 318024
Email: eamda@hotmail.com
Internet: http://www.eamda.net
New Horizons Un-Limited, Inc.
811 East Wisconsin Ave
Suite 937
Milwaukee, WI 53202
USA
Tel: 4142990124
Fax: 4143471977
Email: horizons@new-horizons.org
Internet: http://www.new-horizons.org
Let Them Hear Foundation
1900 University Ave #101
East Palo Alto, CA 94303
Tel: (650)462-3143
Fax: (650)462-3143
Tel: (877)735-2929
Email: info@letthemhear.org
Internet: http://www.letthemhear.org
DuchenneConnect
Emory University, Department of Human Genetics
2165 N. Decatur Road
Decatur, GA 30033
Tel: (404)778-0553
Fax: (404)935-0636
Email: coordinator@duchenneconnect.org
Internet: http://www.duchenneconnect.org
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: 4/25/2008
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