Have Cat Questions? Ask a Cat Vet Online.
I am sorry you are worried about your cat. My name is Rebecca. I am a veterinarian and will do my best to help.
How old is your cat? Is he eating, and drinking?When you look at his gums, are they pink in color or pale?Could he have eaten anything he should not: drugs, medication that fell on the floor? Gotten into the trash?
Sorry for all the questions! Since I can't see and examine him, the more information I have the more I may be able to help.
Good that he is eating, and that his gums are pink.
It sounds like something is affecting his balance, or nervous system. Is it at all possible he ingested something?
If you look at his eyes, are the pupils the same size? Are there any unusual eye movements?
I am pretty worried about him if he won't eat, and is showing signs of a neurologic problem (head jerks, unbalanced walking). If I could, I would do a complete physical exam to try to determine where the problem is: test reflexes, listen to heart and lungs, palpate internal organs and lymph nodes, etc.
Can you get him to a veterinarian today?
Until you can, keep him quiet and see if he will drink anything like water, broth, Pedialyte or even milk.
Let me know how he is doing and what other questions you have.
Can I answer anything else? Are you able to get him to a veterinarian to be checked out, and treated?
How is your cat today?