Dermatomyositis

Important
It is possible that the main title of the report Dermatomyositis 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

Idiopathic inflammatory myopathy
IIM
ADM
Polymyositis
Childhood dermatomyositis

Disorder Subdivisions

Juvenile (Childhood) Dermatomyositis (JDMS)
Adult Dermatomyositis
Dermatomyositis sine myositis

General Discussion

Dermatomyositis is a progressive connective tissue disorder characterized by inflammatory and degenerative changes of the muscles and skin. Associated symptoms and physical findings may vary widely from case to case. Muscle abnormalities may begin with aches and weakness of the muscles of the trunk, upper arms, hips, and thighs (proximal muscles). Muscles may be stiff, sore, and tender and, eventually, show signs of degeneration (atrophy). Affected individuals may experience difficulty in performing certain functions, such as raising their arms and/or climbing stairs. In addition, affected individuals may experience speech and swallowing difficulties.

Skin abnormalities associated with dermatomyositis often include a distinctive reddish-purple rash (heliotrope rash) on the upper eyelids, across the cheeks and bridge of the nose in a "butterfly" distribution, the forehead, or additional skin regions; scaling and degenerative (atrophic) changes of affected skin on the extending surfaces of the knuckles, elbows, knees, and/or other regions (Gottron's sign); an abnormal accumulation of fluid (edema) in body tissues surrounding the eyes; and/or other features.

The symptoms of childhood dermatomyositis are similar to those associated with the adult form of the disorder. However, onset is usually more sudden. In addition, abnormal accumulations of calcium deposits (calcifications) in muscle and skin tissues as well as involvement of the digestive (gastrointestinal [GI]) tract are more common in the childhood form of dermatomyositis.

Although the exact cause of dermatomyositis is not known, it is thought to be an autoimmune disorder.
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Resources

American Autoimmune Related Diseases Association, Inc.
22100 Gratiot Avenue
Eastpointe, MI 48021-2227
Tel: (586)776-3900
Fax: (586)776-3903
Tel: (800)598-4668
Email: aarda@aarda.org
Internet: http://www.aarda.org/

Arthritis Foundation
1330 West Peachtree Street
Atlanta, GA 30309
USA
Tel: 4048727100
Fax: 4048720457
Tel: 8005684045
Email: help@arthritis.org
Internet: http://www.arthritis.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

Myositis Support Group
146 Newtown Road
Woolston, Southampton
Hampshire, Intl S019 9HR
United Kingdom
Tel: 023 80 449708
Fax: 023 80 396402
Email: enquiries@myositis.org.uk
Internet: http://www.myositis.org.uk

NIH/National Arthritis and Musculoskeletal and Skin Diseases Information Clearinghouse
1 AMS Circle
Bethesda, MD 20892-3675
USA
Tel: 3014954484
Fax: 3017186366
Tel: 8772264267
TDD: 3015652966
Email: NIAMSinfo@mail.nih.gov
Internet: http://www.niams.nih.gov

Myositis Association
1233 20th Street NW
Suite 402
Washington, DC 20036
Tel: (202)887-0088
Fax: (202)466-8940
Tel: (800)821-7356
Email: tma@myositis.org
Internet: http://www.myositis.org

Autoimmune Information Network, Inc
PO Box 4121
Brick, NJ 08723
Tel: (732)262-0450
Fax: (732)262-0450
Email: autoimmunehelp@aol.com
Internet: http://www.aininc.org

European Society for Immunodeficiencies (ESID)
c/o Dr. Esther de Vries
Jeroen Bosch Hospital
Dept. Paediatrics
P.O. Box 90153
Hertogenbosch, 5200 ME's
Netherlands
Tel: +31 73-6992965
Fax: +31 73-6992948
Email: info@esid.org
Internet: http://www.esid.org

AutoImmunity Community

Tel: (919)-55-2-9057
Email: bandrews@autoimmunitycommunity.org
Internet: http://autoimmunitycommunity.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: 7/23/2007
Copyright 1986, 1990, 1992, 1993, 1994, 1995, 1996, 1997, 2001, 2002, 2003, 2004, 2005, 2007 National Organization for Rare Disorders, Inc.

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