what causes muscle pain all over
Systemic muscle pain, which you feel throughout your body, is different. It's more often the result of an infection, an illness or a side effect of a medication. Common causes of muscle pain include: 1  Chronic exertional compartment syndrome. 2  Chronic fatigue syndrome. 3  Claudication. 4  Delayed-onset muscle soreness (DOMS). 5  Dermatomyositis. 6  Dystonia. 7  Fibromyalgia. 8  Hypothyroidism (underactive thyroid).