The most common causes of myalgia are overuse, injury, or strain. However, myalgia can also be caused by diseases, medications, or as a response to a vaccination. Dehydration at times results in muscle pain as well, especially for people involved in extensive physical activities such as workout. It is also a sign of acute rejection after heart transplant surgery. The most common causes are: Overuse Overuse of a muscle is using it too much, too soon or too often. One example is repetitive strain injury. See also: * Exercise * Weight lifting Injury The most common causes of myalgia by injury are: sprains and strains. Autoimmune * Multiple sclerosis (neurologic pain interpreted as muscular) * Myalgic Encephalomyelitis (chronic fatigue<unk>  * Myositis * Mixed connective tissue disease * Lupus erythematosus * Fibromyalgia<unk>  * Familial Mediterranean fever * Polyarteritis nodosa * Devic's disease * Morphea * Sarcoidosis Metabolic defect * Carnitine palmitoyltransferase II deficiency * Conn's<unk>  * Adrenal insufficiency * Hyperthyroidism * Hypothyroidism * Diabetes * Hypogonadism * Postorgasmic illness<unk>  Other * Chronic fatigue<unk>  * Channelopathy * Ehlers Danlos<unk>  * Stickler<unk>  * Hypokalemia * Hypotonia * Exercise intolerance * Mastocytosis * Peripheral neuropathy * Eosinophilia myalgia<unk>  * Barcoo Fever * Herpes * Hemochromatosis * Delayed onset muscle soreness * HIV/AIDS * Generalized anxiety disorder * Tumor-induced osteomalacia * Hypovitaminosis D * Infarction Withdrawal<unk>  from certain drugs Sudden cessation of high-dose corticosteroids, opioids, barbiturates, benzodiazepines, caffeine, or alcohol can induce myalgia.
symptom of Lemierre's syndrome
symptom of Listeriosis
symptom of Shigellosis
symptom of Legionnaires' disease
symptom of Campylobacteriosis
symptom of Paratyphoid fever
symptom of Rheumatic fever
symptom of Syphilis