Our expert says:
Seizures can certainly be a symptom of a brain tumour, however seizures can be purely as result of epilepsy as well. It sounds like your vet has looked at the general medical conditions that can cause seizures such as liver problems, kidney problems and blood glucose problems, etc. In general, brain tumours will typically lead to progressive neurological abnormality, such as a head tilt, being constantly off-balance or falling over or other behaviour problems. If we assume that the diagnosis of epilepsy is correct, the treatment with phenobarbitone is also correct. This treatment can also be used even if the cause of the seizures is a brain tumour. The dose must be individualised for each individual cat. Initially, hindquarter weakness is not uncommon, but this should resolve within about 14 days. If it does not resolve, it may be part of the nervous system disease in general, and may indicate a more serious problem. If the seizures persist, the phenobarbitone dose will need to be increased, but that amount depends on the body weight of the particular cat.
Good luck, and I hope that helps.
Dr Malan van Zyl
Veterinary Specialist Physician
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