Dermatomyositis is a disease characterized by inflammation of the muscles and the presence of skin rashes. Symptoms that may occur include pain and stiffness in muscles, muscle weakness, difficulty breathing, difficulty swallowing food, rashes .... The treatment of dermatomyositis is the prescription of corticosteroids and drugs that suppress the immune system, as the recommendation for moderate exercise. If the condition is associated with cancer, known as paraneoplastic dermatomyositis, the solution is to remove the tumor. There is also a version of this disease that affects children, called juvenile dermatomyositis.