This article, based on a descriptive study of cats with seizures, pres
ents a diagnostic and therapeutic approach to seizures in this species
. Seizures in cats are caused by active structural disease or secondar
y epilepsy. The most common structural causes are inflammatory disease
s, many of which are probably viral (non-FIP [feline infectious perito
nitis]) in origin. Toxoplasmosis, FIP, feline leukemia virus (FeLV) an
d feline immunodeficiency virus (FIV) are rare causes of recurrent sei
zures in cats. The age at onset of seizures and the pattern (type and
frequency) of seizures are important factors in establishing a diagnos
is. The severity of the seizures is not a good predictor of outcome.