Ulcers, unfortunately, are quite common in horses, especially competitive performance horses. Common symptoms include: unexplained colic episodes and discomfort while cinching up. To be absolutely sure your horse has ulcers you will need to have a vet out to examine your horse through an endoscope.
Stress is the number one cause of ulcers as well as frequent dosing of non-steroidal anti-inflammatory drugs and low-fiber diets.
The most common treatment for ulcers is a medication called omeprozene, but there are other more natural methods of treating ulcers.
The best prevention of ulcers is keeping your horse as stress-free as possible and on a diet high in roughage (hay) and frequent, small feedings.
(free photo from Canva - https://www.canva.com/ )
~ Saddle Up