Polymyositis is an autoimmune disease that causes inflammation in the muscles. It’s also commonly paired with other rheumatic diseases such as scleroderma, rheumatoid arthritis, or lupus.
All information contained within the Johns Hopkins Rheumatology website is intended for educational purposes only. Physicians and other health care professionals are encouraged to consult other sources and confirm the information contained within this site. Consumers should never disregard medical advice or delay in seeking it because of something they may have read on this website.