Many family members of patients call to ask why they have epilepsy like a different person, and their personalities are very different from before or even like a different person. An expert replied: epilepsy patients are more or less psychological and even personality changes because of this disease, which is considered a normal performance. The main reason for the change is that the patient’s personality can be affected by chronic and severe epilepsy, mainly due to stubbornness, selfishness, irritability, self-centeredness, and obsession. Or, they may exhibit emotional superficiality, excessive modesty, or antisocial behavior. Patients with epileptic personality disorder lack a stable personality structure and are immature and impulsive. Personality changes are most often seen in patients with grand mal seizures especially temporal lobe epilepsy. Epileptic personality changes are the result of a combination of factors, generally considered to be related to the influence of psychosocial factors, organic brain damage, seizure type and long-term application of AEDs, as well as the patient’s pre-existing personality traits. Cognitive impairment in patients with epilepsy: The incidence of intellectual impairment in patients with epilepsy has been reported abroad to be 20% to 70%, which is related to the type of seizure. Forty children with epileptiform discharges in the central temporal region were observed, and it was found that regardless of the presence or absence of clinical seizures, these children had worse IQ total and operational scores, language comprehension, spatial orientation, short-term memory and psychomotor ability than normal control children, and were associated with epileptiform discharge frequency. Cognitive impairment was mainly associated with seizure-induced brain damage and administration of AEDs. The adverse effects of medications such as phenobarbital, phenytoin sodium, and carbamazepine on memory, concentration, and attention have been demonstrated in animal studies. In addition, emotional, behavioral and environmental factors can also affect cognitive function in patients with epilepsy.