POLYMYOSITIS is the nonsuppurative,noninfective, inflammation of sheletal muscle of unknown cause,characterized by necrosis,fibrosis,and regeneration of muscles.
When associated with skin rash,it is called dermatomyositis.👩⚕️👩⚕️👩⚕️👩⚕️👩⚕️👩⚕️👩⚕️👩⚕️