<unk>  <unk>  is a type of chronic inflammation of the muscles (inflammatory myopathy) related to dermatomyositis and inclusion body myositis. Its name means "inflammation of many muscles" (poly- + myos- + -itis). The inflammation of<unk>  is mainly found in the endomysial layer of skeletal muscle, whereas dermatomyositis is characterized primarily by inflammation of the perimysial layer of skeletal muscles.
Polymyositis
Scleroderma
Dermatopolymyositis
Dermatomyositis
Inclusion body myositis
Nemaline myopathy
Inflammatory myopathy
Metabolic myopathy