Stephanie Valberg, DVM, PhD, Dipl. ACVIM, ACVSMR

Stephanie Valberg, DVM, PhD, Dipl. ACVIM, ACVSMR, is the Mary Anne McPhail Dressage Chair in Equine Sports Medicine and a Professor of Large Animal Clinical Sciences at Michigan State University. She is a leading researcher on the subject of tying-up and the genetic basis for equine neuromuscular disorders.

Articles by Stephanie Valberg

Where We Stand With Shivers

Learn the latest about this puzzling neuromuscular disease. Read More

Old School Tying Up Treatment

Why have vitamin E/selenium injections prior to whatever led to tying-up in the past been abandoned? Read More

Tying-Up in Horses

Tying-up is the most common muscle problem in horses. This syndrome is also called azoturia, set fast, paralytic myoglobinuria, and chronic exertional rhabdomyolysis (ER). HYPP (hyperkalemic periodic paralysis) in Quarter Horses is a different Read More

Breeding Horses With Genetic Disorders

I read on your site that two or three Quarter Horse stallions might be traced to the syndrome of polysaccharide storage myopathy (PSSM). I have a performance Quarter Horse filly with PSSM, and I feel it is important to know who these sires Read More

Tying Up is Split Up

Muscle disease in performance horses commonly is referred to as tying-up, exertional rhabdomyolysis, azoturia, or Monday morning disease. Horses experiencing tying-up show a stiff gait; reluctance to move; firm, painful muscle cramps; profuse Read More

Tying-Up Syndrome

I just bought a Thoroughbred filly which was in race training, but retired without running because of recurrent bouts of ‘tying-up.’ She had been turned out for six months before I got her, and never showed any problems while on the farm. Read More