Have a 16 year old TB I have owned for 10 years. We have competed in the Hunters the last 9 of 10 years. He has always been spirited, but energy was easily contained with 4-5 rides/week. He even was used for lessons and was going to be leased out to a younger girl before I decided to take him to college with me.
Last summer, he started to look a little stiff behind, but with routine hock injections he was back to himself and was Reserve Champion at our show. When we came back, we started noticing slight behavior issues that continued to get worse. Behavior issues started with bucking when getting a longer distance to a fence or me making an amateur mistake, but increased to ground manner changes and spookiness leading to major distraction throughout the entire ride, never any focus if you lost his attnetion. He began to be difficult to lead in/out from his stall to pasture, prancing and even striking when on the lead rope. I had a vet and chiropractor looking at him and finding no issues in soundness/soreness. We tested for lameness, treated for ulcers, continue to do acupuncture and chiropractor, had the saddle checked and more that I can’t even remember.
Frustrated with increasingly poor behavior, I hired another vet from four hours away. He came and immediately diagnosed my TB with EPM. We have treated twice, and while the behavior seemed to improve, it has gotten worse again in the last month (treatment is still going on, no changes). No vets can provide answers.
He has been in training as we categorized as “behavior problems” since vets couldn’t find anything but even training isn’t keeping him from bucking and crazy spooking at NOTHING. Two rides ago he let us a huge buck after 30 minutes of the ride, after a 5 stride line (only 2"6; very small jumps). After a spook/reaction like this it is impossible to bring him back and continue the ride. He is a ticking time bomb. This morning he was great for the ride, but in cooling out leapt in the air and bucked when he was being walked on a long rein. Tonight I went to turn him out and just exiting his stall and walking toward his pasture he began to buck and was impossible to control. We were finally able to get him to his pasture with a rope halter. I never know what horse I am going to deal with. He could be so sweet and quiet one ride, and a disaster the next.
Has anyone experienced any behavior change this drastic!? Everything I have read is not to this level of danger. If there is a thread I just cannot locate, please direct me there! I am willing to try everything or anything. Would hate to keep spending money on vet bills to get us nowhere. Thank you for any input!!!