Veterinary questions? Ask a Vet for Answers ASAP
You are through to Dr Coles. I am a UK based vet. I am sorry to hear you are having problems with your cat. Can I ask how old your cat is? Has he/she recovered OK from the seizure? Is there any possibility of ingestion of something in the house e.g medications, plants, etc? When the seizure was occurring did he/she have leg twitching/movement? Did the cat seem awake and responsive or unconscious? Have they been eating as normal etc prior to this? Any changes with the thirst or drinking/urinating?
There are lots of different things which can cause seizures in cats. Epilepsy can occur but it is usually in younger cats and is not very common. Seizures can also be caused by any type of metabolic/systemic disease such as changes in the electrolytes, calcium levels, problems with liver function, kidney function etc. Another cause of seizures would be exposure to anything toxic such as permethrins (flea spot ons), medications, certain plants. It is also possible for cats to get intracranial problems such as a mass (tumour) in the brain. This can cause compression on the brain and seizures can be the result.
Ideally I would recommend that she is examined today, by your out of hours vet, so that they can look for any abnormalities. It is likely that they would start by checking some bloods to look for any underlying problems that could have caused the seizure. If they found nothing on these, she may require an MRI scan (if this is something you would want to do).
Obviously she has recovered from the seizure at the moment but I would recommend taking her to the vets today. They can give you some rectal diazepam to have at the house to administer if this does happen again. I hope she feels better soon.