What is dermatomyositis?

Dermatomyositis is an inflammatory condition that affects the muscles and is characterized by muscle pain and skin rashes. It may result in chronic inflammation of your muscles and skin, which causes muscle pain, weakness, atrophy (reduction in size), and dysfunction. In addition, a purple or dark red rash may occur anywhere on the skin, but most typically appears on the eyelids and in places on the skin where a muscle covers a joint, such as the elbows, knees, knuckles and toes.

Muscle Problems Spotlight

The exact cause of dermatomyositis is not clear. It is thought to have a genetic link or possibly be related to a previous infection. It is also similar to autoimmune diseases because the immune system targets the muscle and skin tissues. Studies have shown that people who have dermatomyositis usually have elevated muscle enzymes and elevated autoantibody levels. Dermatomyositis occurs most often in women who are 40 to 60 and in children who are 5 to 15. The disease is less common in men than in women. (Source: PubMed).

The symptoms of dermatomyositis typically develop slowly, possibly over weeks or several months. Once you develop dermatomyositis, you may have periods of remission followed by flare-ups of symptoms.

The most common symptom of dermatomyositis is a skin rash that is a dark reddish or purple color and appears on your skin in places where muscles are involved in joint movement. Muscle symptoms occur when blood vessels in the muscle fibers become inflamed, causing muscle damage, which results in muscle weakness, atrophy, and pain. Fortunately, the symptoms of dermatomyositis can be treated successfully. The most common treatment is immunosuppressant medications, such as corticosteroids, that will suppress the immune system response and relieve pain. Support therapies include physical therapy to help strengthen affected muscles and speech therapy when muscles involving speech are affected.

In some cases, dermatomyositis can be associated with serious conditions or symptoms. Seek immediate medical care (call 911) for serious symptoms, such as profound weakness, inability to urinate, severe muscle pain, difficulty breathing, or chest pain.

Seek prompt medical care if you are being treated for dermatomyositis but mild symptoms recur or are persistent.


SYMPTOMS

What are the symptoms of dermatomyositis?

Dermatomyositis causes inflammation and weakness in the muscles and produces characteristic skin rashes. Symptoms can vary in intensity among individuals and may occur daily or only occasionally. However, at any time, symptoms may become severe.

Common symptoms of dermatomyositis

You may experience dermatomyositis symptoms daily or only occasionally. At times, any of th... Read more about dermatomyositissymptoms

CAUSES

What causes dermatomyositis?

The cause of dermatomyositis is poorly understood. It may be related to an infection. It is also thought that there is a genetic association with the development of dermatomyositis. Dermatomyositis is similar to autoimmune diseases because the immune system targets the muscle and skin tissues. Once you develop dermatomyositis, you may have periods of remission followed by flare-ups of symptoms.... Read more about dermatomyositiscauses

TREATMENTS

How is dermatomyositis treated?

Treatment for dermatomyositis begins with seeking medical care from your health care provider. To determine whether you have dermatomyositis, you will be asked questions about your symptoms and when they occur. You may be asked to undergo diagnostic testing.

Treatments for dermatomyositis

Dermatomyositis requires specific regimens to treat and manage symptoms. There is ... Read more about dermatomyositistreatments

Medical Reviewer: William C. Lloyd III, MD, FACS Last Annual Review Date: Aug 9, 2013 Copyright: © Copyright 2014 Health Grades, Inc. All rights reserved. May not be reproduced or reprinted without permission from Health Grades, Inc. Use of this information is governed by the HealthGrades User Agreement.

This Article is Filed Under: Bones, Joints and Muscles


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