Dermatomyositis is a muscle disease characterized by inflammation and a skin rash. It is a type of inflammatory myopathy.

The cause of dermatomyositis is unknown. Experts think it may be due to a viral infection of the muscles or a problem with the body's immune system. It can also sometimes occur in patients who have cancer of the abdomen, lung or other body area.

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

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

Images

Dermatomyositis, Gottron's papule

Dermatomyositis on the legs

Paronychia, candidial

Dermatomyositis, heliotrope eyelids

Dermatomyositis, heliotrope rash on the face

Dermatomyositis, Gottron's papules on the hand

Dermatomyositis, Gottron's papule

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Dermatomyositis Symptoms

Review Date: 02/08/2011
Reviewed By: Richard J. Moskowitz, MD, Dermatologist in Private Practice, Mineola, NY. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)