Muscle pains

Nature

Myalgia is the medical term for muscle pain. Myalgia is a symptom of many diseases. The most common cause of acute myalgia is the overuse of a muscle or group of muscles; another likely cause is viral infection, especially when there has been no trauma.

Long-lasting myalgia can be caused by metabolic myopathy, some nutritional deficiencies, chronic fatigue syndrome, fibromyalgia, and amplified musculoskeletal pain syndrome.

Source: Wikipedia

Type 
(G) Very specific problems