A welfare guide to seizure disorders in cats, including recognition, emergency management, and long-term anticonvulsant therapy.
Key Facts
Seizures in cats are less common than in dogs but occur across all ages — causes include structural brain disease, metabolic disorders (hepatic encephalopathy, hypoglycemia), toxins, and idiopathic epilepsy.
Feline seizures often differ from canine — partial (focal) seizures with abnormal facial movements, salivation, or behavioral changes may be subtle and easily missed by owners.
The welfare burden of seizure disorders is significant — post-ictal confusion, fatigue, and disorientation cause distress; cluster seizures and status epilepticus are life-threatening emergencies.
Status epilepticus (continuous seizure > 5 minutes or 2+ seizures without recovery) is a welfare emergency requiring IV diazepam or midazolam — every minute without treatment increases brain damage risk.
Phenobarbital is the first-line anticonvulsant for cats with idiopathic epilepsy — it requires bi-annual liver enzyme monitoring due to hepatotoxicity risk.
Levetiracetam (Keppra) is increasingly used as a second-line or adjunct anticonvulsant — it has fewer side effects and is preferred for cats with liver disease.
Well-controlled epileptic cats can have excellent quality of life — treatment success rates for phenobarbital-responsive idiopathic epilepsy exceed 70%.
Welfare Considerations
Seizures are frightening welfare events for both cats and their owners. Status epilepticus is a life-threatening emergency requiring immediate veterinary intervention. For cats with confirmed epilepsy, consistent anticonvulsant treatment and regular monitoring achieve good seizure control in most cases. Never wait to 'see if it happens again' after a first witnessed seizure in a cat — prompt investigation identifies treatable causes.
What You Can Do
Seek veterinary assessment after any witnessed seizure in your cat — treatable causes require prompt investigation
Call your vet immediately if a seizure lasts more than 5 minutes — this is status epilepticus and a life-threatening emergency
Maintain anticonvulsant medication consistency — missed doses are a common trigger for breakthrough seizures
Monitor liver enzymes bi-annually for cats on phenobarbital therapy