tying up (acute rhabdomyolysis)

A form of muscle cramps that ranges in severity from mild stiffness to a life-threatening disease. A generalized condition of muscle fiber breakdown usually associated with exercise. The cause of the muscle fiber breakdown is uncertain. Signs include sweating, reluctance to move, stiffness and general distress. See "Muscular Injuries" subsection of "Musculoskeletal System" in veterinary supplement for a more detailed explanation.