Sep 11, 2019 · Polymyositis affects the skeletal muscles. It is also known as idiopathic inflammatory myopathy. The exact cause is unknown, but it may be related to an autoimmune reaction or infection. Polymyositis can affect people at any age. It is most common in adults between ages 50 .
Feb 12, 2018 · Polymyositis is an idiopathic inflammatory myopathy that causes symmetrical, proximal muscle weakness; elevated skeletal muscle enzyme levels; and characteristic electromyography (EMG) and muscle biopsy findings (see the images below). Clinically similar to polymyositis, dermatomyositis is an idiopathic, inflammatory myopathy associated with.
Polymyositis can affect people at any age. It is most common in adults between ages 50 and 60, and in older children. It affects women twice as often as men. It is more common in African Americans than white people. Symptoms. Polymyositis is a systemic disease. This means it affects the whole body.
Polymyositis is a disease that causes muscles to become irritated and inflamed. The muscles eventually start to break down and become weak. The condition can affect muscles all over the body. Open the Johns Hopkins Medicine menu with the enter key and close it with the escape key; use the tab keys to navigate links.