TL;DR: Confusion and temporary blindness are common recovery symptoms after a cat has a seizure, but a veterinary exam is required within 24 hours to identify the underlying cause.
What happens during the post-ictal phase after my cat has a seizure?
The post-ictal phase is the recovery period where the brain attempts to normalize after the intense electrical activity of a seizure. During this time, your cat may exhibit several common behaviors:
- Mental confusion and disorientation
- Pacing and vocalizing
- Bumping into furniture because their vision has not yet returned to normal
How quickly does my cat need medical attention after a seizure?
A seizure is always a symptom of an underlying issue that requires medical investigation. You should follow these action steps:
- Contact your veterinarian or an emergency clinic within the next 12 to 24 hours for a neurological assessment.
- Seek immediate emergency care if the seizure lasted longer than five minutes.
- Seek immediate emergency care if your cat has more than one seizure in a 24-hour period.
Why should I record a video or take photos of my cat's symptoms?
Because these episodes often resolve by the time you reach the veterinary clinic, capturing visual evidence is vital for an accurate triage:
- A video helps the vet distinguish between a true seizure and other conditions like fainting or vestibular disease.
- A photo allows the vet to check pupil symmetry and light reflex.
- This documentation ensures your cat receives the most accurate diagnostic path and treatment plan.
Clinical Context (Merck Veterinary Manual)
Post-seizure confusion and blindness in cats can arise from several etiologies, including cardiac arrest during anesthesia, severe head trauma, or intracranial diseases affecting the optic chiasm or occipital cortex, such as pituitary masses, paranasal masses, meningiomas, or lymphosarcoma. Urgent care for persistent status epilepticus may involve diazepam (0.5-1 mg/kg/hr IV as a constant-rate infusion). If phenobarbital is not an option due to hepatic conditions, levetiracetam (40-60 mg/kg IV, SC, or rectally) can be administered. Maintenance anticonvulsant therapy includes phenobarbital (2-4 mg/kg PO bid) as needed to control seizures.
Chapter: Neurology
Source: The Merck Veterinary Manual, 11th Edition (Page 1282)