tying-up syndrome

tying-up syndrome

a disease in which horses become stiff in their limbs while performing exercise, or soon afterwards. The stiffness and soreness may be so severe that the horse cannot move. The creatine-phosphokinase and other relevant serum enzyme levels are very high. The disability is likely to be a permanent characteristic of an individual horse. Called also transient exertional rhabdomyolysis, polymyositis.