In addition to progressive muscle weakness, swelling and tenderness, people with polymyositis may have shortness of breath, fatigue, joint pain, fever, difficulty swallowing
[kidshealth.org]
Polymyalgia rheumatica November 19, 2015 Postmyocardial infarction syndrome November 19, 2015 Polymyositis is a rare inflammatory disease that leads to muscle weakness, swelling
[aarda.org]
muscles (voluntary muscles that connect bones).
[kidshealth.org]