Polysaccharide storage myopathy or PSSM is a muscle disease that occurs primarily in horses with Quarter Horse bloodlines such as Quarter Horses, Paint Horses, and Appaloosas. PSSM also occurs in other breeds including Drafts, Draft crossbreeds, and Warmbloods. The primary clinical sign of this disease is muscle cramping or tying-up; however, clinical signs may vary with different breeds and severity. There are several different abbreviations used to describe polysaccharide storage myopathy including PSSM, EPSM and EPSSM. Tying-up also occurs in other breeds of horses such as Thoroughbreds and Standardbreds, but this form of tying-up has a different cause.

Protecting Horses and Humans - The COVID-19 pandemic showed how alarmingly quickly a virus can spread across countries and continents and created an understandable reaction to protect against infection from any and all viruses and pathogens. By extension, it is also essential that there is a level of biosecurity on your farm or acreage to protect horses against agents of disease.

Stringhalt, or equine reflex hypertonia, is a neuromuscular condition that causes a gait abnormality characterized by involuntary, exaggerated upward movement of one or both of the hindlimbs. It looks like a jerk or hop, with the affected hindlimb(s) snapped up towards the abdomen. This generally occurs with every stride at the walk but can lessen at the trot and is usually absent at the canter. The degree of hyperflexion varies from mild to severe and is most obvious when the horse is turning sharply, backing, going down a slope, in the first few walking steps after standing still, or during gait transitions. A hopping gait may be exhibited in severe cases.

A drug that has been widely used in Thoroughbred racehorses in North America could increase the risk of sudden death, according to a new study. The research also identified other risk factors associated with sudden death, relating to the circumstances of the race and individual histories of the horses.