Shivers is a chronic neuromuscular syndrome in horses characterized by gait abnormalities, painful cramps and uncontrolled shaking—all most noticeable in the hind limbs when an affected horse backs up or is required to lift a hind leg, such as for farrier work. The disease is progressive and, over time, may lead to muscle atrophy. Even though horses with shivers can move forward normally and be highly athletic, the disease can lower their quality of life and create management challenges for owners.
Research has shown that male horses standing 16.3 and taller seem to be more susceptible. And the disease is more common in warmbloods, warmblood crosses and draft horses, although it may affect other breeds as well. However, there remains no known cause or treatment. But Stephanie Valberg, DVM, PHD,…