Has Baily had any steroids during all this yet?
When we brought Ry to the vet for his issue, the vet gave him a steroid injection and said if it helped, great, he could do more. If it didn't, it was beyond his ability to help in the office and off to the specialist he'd send us. That's where we ended up and I was bringing poor Ry to the vet at least 1x a day for pain med injections while waiting to get to his appointment a couple days later.
Specialist saw him, was confident it was a tumor and suggested a MRI so we knew what we were dealing with. Luckily, didn't have to wait long for that and it was done the next night. No tumor, but they did find a very large blood clot in his neck in an area that nobody had a clue how a blood clot could get there, let alone one that was several inches long. Vets around the county were consulted and set his MRI images. Nobody had a clue. Not wanting to dislodge it, the bubble wrap treatment began - don't let him do anything until the blood clot resolves on its own (no problem, he was a lazy greyhound lol).
When Ry swelled and looked like a classic Cushings dog, we went to Cornell for a better ultrasound than my vet could do in his office and found out the poor dog was packed full of clots. Which was why he was having so many seizures again - his body wasn't able to process his seizure meds. And trying to keep a seizure dog from not seizing and dislodging a zillion clots... so fun. It was also then they thought his spleen was an issue, but no vet was willing to do surgery on a dog that was so full of blood clots. I was told if he made it through the next 48 hours, it wasn't his spleen behind all of it. He did, the clots finally resolved on their own and he continued to have issues from all this and we finally gave up trying to figure out what was causing it and just treated stuff as it came up.
I'm convinced his passing last year was a result of all that, but again, still nobody had a clue.
To me, it still sounds like a neck/back/spine issue. I wouldn't want my dog to be treated by a chiro without a definitive diagnosis of what is going on. But MRIs are expensive. I'd be working with the vet to see what options there are to rule in/out certain spine issues that could be tried first.
