<unk>  (also called muscle pain and muscle ache in layman's terms) is the medical term for muscle pain.<unk>  is a symptom of many diseases. The most common cause of acute<unk>  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<unk>  can be caused by metabolic myopathy, some nutritional deficiencies, and chronic fatigue syndrome.
Myalgia
Allodynia
Pain
Tenderness 
Bone pain
Weather pains
Visceral pain
Muscle atrophy