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The cause of this disorder is unknown. It is theorized that an autoimmune reaction (reactions caused by an immune response against the body's own tissues) or a viral infection of the skeletal muscle may cause the disease. In addition, some doctors think certain people may have a genetic susceptibility to the disease.
Last updated: 8/26/2013
- Moskowitz RJ. Dermatomyositis. MedlinePlus. February 2011; http://www.nlm.nih.gov/medlineplus/ency/article/000839.htm. Accessed 8/26/2013.
- Dermatomyositis. MayoClinic.com. July 2011; http://www.mayoclinic.com/print/dermatomyositis/DS00335/DSECTION=all&METHOD=print. Accessed 8/26/2013.