Dermatomyositis

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Dermatomyositis

Definition

Dermatomyositis is a muscle disease that causes inflammation and a skin rash. It is a type of inflammatory myopathy.

Causes

The cause is unknown. Experts think it may be due to a viral infection of the muscles or a problem with the body's immune system.

Anyone can develop dermatomyositis, but it most commonly occurs in children age 5 to 15 and adults age 40 - 60. Women develop this condition more often than men.

Polymyositis is a similar condition, but the symptoms occur without a skin rash.

References

Goldman L, Ausiello D. Goldman: Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders; 2007.


Dermatomyositis, Gottron's papule


Dermatomyositis, Gottron's papules on the hand


Dermatomyositis, heliotrope eyelids


Dermatomyositis on the legs


Dermatomyositis, Gottron's papule


Paronychia, candidial


Dermatomyositis, heliotrope rash on the face

Review Date: 12/24/2007
Reviewed By: David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.; and Paul H. Plotz, MD, Chief, Arthritis and Rheumatism Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases. Previously reviewed by Kevin Berman, MD, PhD, Associate, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network (4/12/2007).

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