A retrospective study reviewed 789 cats referred for epileptic seizure evaluation between 1998 and 2017. The aim of this study was to determine common causes for reactive seizures in cats. Reactive seizures were diagnosed in 62 (7.9%) of 789 feline patients. The most common cause  was presumptive or confirmed intoxication. Toxins included permethrin, fipronil, and pesticide. Other common causes were hepatic and renal encephalopathy, hypertension, hyperthyroidism, hypoglycaemia, and hyperglycaemia. Most commonly, cats presented with generalized tonic-clonic seizures ( 40.3%). A single status epilepticus was observed in 9.7%  and 4.8% presented only with cluster seizures. Focal seizures were the only presenting sign in 3.2%  of cases, however in 4.8% they were accompanied by tonic-clonic seizures. The mean age of all cats presented for was 10.8 years. In the intoxication group, the mean age was 2.9 years.

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Reactive seizures in cats: A retrospective study of 64 cases.