Juvenile dermatomyositis (JDM) is a rare autoimmune inflammatory disease affecting the muscles, blood vessels and skin. JDM affects approximately 3 in every 1 million children each year. Patients with JDM have weakness in the muscles around the neck, shoulders, hips and thighs. This makes it difficult to climb stairs, rise from a chair, wash hair and get off the floor. The skin rash associated with JDM is typically red or purple in color and can be found on the eyelids, knuckles, ankles and knees.
Children with JDM sometimes develop calcinosis, small lumps of calcium under the skin or in the muscles. There is no cure for JDM, however there are several treatment options which can lessen the symptoms.
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