Bilateral frontotemporal lobe epilepsy seizures once every few years, the appearance of intellectual and mental disorders, may be considered a longer duration of seizures or the primary disease such as cerebrovascular disease caused. 1. Long duration of seizures: Although bilateral frontotemporal lobe epilepsy occurs once every few years, if the duration of seizures is long, prolonged seizures will lead to abnormal discharges of neurons in the brain and cause irreversible neuronal damage. When the neurons are damaged, the patient may show intellectual and mental disorders. 2. Primary disease: If the patient has a history of cerebral hemorrhage or cerebral infarction, and vascular dementia occurs, the patient will show intellectual and mental disorders, such as loss of computational ability, memory loss, irritability, anxiety, and so on. Bilateral frontotemporal lobe epilepsy with seizures once every few years and intellectual and mental abnormalities should be clarified under the guidance of a doctor to determine the cause and targeted treatment.