I got my mare a year ago. Rode her a lot, in my ignorance, in the western saddle I had. I really don't know how well it fit her.
Around june, she started developing little pea sized "bumps" on her back. I had both a trainer and a my vet (who does horses, but isnt exclusively an equine vet) look at her. Trainer said lice. So I roached her mane off, and dusted her. They didnt go away. The vet said it was fungal--akin to rain rot, from the cold-wet-cold-wet sort of winter we had. He said betadine. I used it faithfully, and yet all summer, her bumps never went away. I couldn't find any literature or information of anything similiar on another horse.
They obviously were very sore, so I didnt ride her.
Now, they've been gne all winter. If you touch one side of her back, near the shoulder, she gets..."twitchy" though, even though I can't feel any heat/sores/bumps. Prior to last summer, and her bumps, she started trying to bite me when I cinched up. She still tries, but not as adamently.
Today, I approached her with a saddle, just to set it on her to check fit...and as she saw me coming with it, she literally, her whole back twitched and did that shiver thing.
So, anyone have a guess? Is it time to see a chiro? How do you know? Im so afraid, that last spring, in my ignorance I hurt her. We don't have a local equine chiro (the most isolated, worthless small town ever) , but theres a large animal vet 50 miles away that also practices chiropractics and I might be able to pay him to come up.