Health Topics

Juvenile Dermatomyositis (JDM)

Juvenile dermatomyositis (JDM) is a disease in children that causes skin rash (dermato) and muscle inflammation (myositis), resulting in weak muscles. 

JDM is a type of autoimmune disease. The immune system is a group of cells that protect the body from infections. In autoimmune diseases such as JDM, these cells fight the body's own tissues and cells, causing inflammation and, in some cases, tissue damage.  

JDM is different from adult dermatomyositis. In JDM, there is no increased risk of cancer. However, there is often blood vessel involvement, which can be severe. Also, calcium deposits (calcinosis) are common, especially in the recovery phase.

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Frequency of JDM

Causes of JDM

Signs and Symptoms of JDM

Diagnosis of JDM

Treatment for JDM

Long-Term Outlook for Children With JDM


Last Updated: 07/2013