Tying-up syndrome, or rhabdomyolysis, is a myopathy (a disorder affecting the body’s muscle system) that causes muscle-cell destruction and decreases an affected horse’s performance. Common systems include painful muscle cramping and hardening as well as severe increases in muscle enzymes that can be detected through laboratory testing.

Years ago, veterinarians recognized that obese horses develop a different metabolism than healthy horses. They often find it difficult to lose weight, even when on a strict diet, and are prone to laminitis. Researchers began to investigate the cause of this altered metabolism, which was eventually attributed to equine metabolic syndrome (EMS).

The term “colic” means “pain in the abdomen” or “pain in the belly.” There are many causes for such pain, ranging from the mild and inconsequential to the life-threatening or fatal. One of the problems with equine colic is that it can be very difficult in the early stages to distinguish the mild from the potentially fatal. This is why all cases of abdominal pain should be taken seriously right from the onset.

If your veterinarian has recommended a gastroscopy, sometimes called a “stomach scoping,” he or she probably thinks your horse has equine stomach ulcers, which aren’t uncommon in horses. In fact, 62 percent of horses have them to some degree.1 The good news is they can be treated – and prevented in the future.