Rhabdomyolysis: Rhabdomyolysis is a condition in which there is damage to the skeletal muscle or muscles of the body. Common causes of rhabdomyolysis include trauma, burns, prolonged immobilization, escessive exercise, medications, drug abuse, other diseases, snake bites, and spider bites. The three main symptoms of rhabdomyolysis are muscle aches, muscle weakness, and darkened urine. Treatment for rhabdomyolysis needs to be prompt as rhabdomyolysis can be a life-threatening condition.