Polymyositis is a systemic disease, which means it affects the whole body. Symptoms include:
Patients may also have morning stiffness, joint pain, fatigue, anorexia, weight loss, and fever.
Harris ED, Budd RC, Genovese MC, Firestein GS, Sargent JS, Sledge CB. Kelley's Textbook of Rheumatology. 7th ed. St. Louis, Mo: WB Saunders; 2005:1312-1316.
Goldman L, Ausiello D. Goldman: Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders; 2007.