It might be time to consider predisone if the Vet can't find anything. One of our cats who is about 15 has had long periods of rejecting food and occasional vomiting. Despite test, X-rays, and ultrasounds, the vet could find nothing so he put the cat on predisone daily. Appetite picked up and he was back to his old self. We stopped the treatment, and he lost his appetite and the occasional vomiting returned. The vet then prescribed predisone again but in a smaller does that we give twice a week in kitty treats which he loves. Appetite returned and no vomiting. We know his days are numbered, but we want to do all we can for him.Cat hasn't eaten in four (count 'em, 4) days. We were out of town all of last week and got a call from the pet sitter. Decided to wait until we got home and assess the issue. Vet said blood work is fine.
Got some kitty meds designed to stimulate appetite (feline THC?).
Anyhow- still not eating so it's off to the vet tomorrow for x-rays looking for blockage or cancer.
She's old.
I dig pets, but when they go they go. And that's the end of it.
Predisone has some bad long term side effects but if the Vet can't come up with something else, it might be worth considering.