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Most cases of dermatomyositis respond to therapy. Some people may recover and have symptoms completely disappear. This is more common in children. In adults, death may result from severe and prolonged muscle weakness, malnutrition, pneumonia, or lung failure. The outcome is usually worse if the heart or lungs are involved. 
Last updated: 8/26/2013
- NINDS Dermatomyositis Information Page. National Institute of Neurological Disorders and Stroke (NINDS). August 2011; http://www.ninds.nih.gov/disorders/dermatomyositis/dermatomyositis.htm. Accessed 8/26/2013.
- Moskowitz RJ. Dermatomyositis. MedlinePlus. February 2011; http://www.nlm.nih.gov/medlineplus/ency/article/000839.htm. Accessed 8/26/2013.