Rhabdomyolysis- Muscle disorder of racing greyhounds, working dogs and horses appears to be triggered by an inadequate supply of blood to the muscle after exercise, causing kidney disease and destruction of muscle cells. Signs in dogs include muscle pain and swelling that becomes noticeable 24-72 hours after racing or overuse. In severe cases, stiffness, deep or fast breathing, collapse, and kidney failure may occur. Urine tests are used to confirm the diagnosis. Treatment includes supportive care such as fluids, bicarbonate, body cooling, rest and muscle relaxants.
In horses, signs are usually seen after the horse begins to exercise. Excessive sweating, tachypnoea, tachycardia, reluctance or refusal to move and firm painful hindquarters.