Temporal lobe epilepsy is the most common type of localization-related epilepsy and may manifest as behavior change or psychosis. Sometimes it is hard to diagnose because we are used to thinking about dementia probably. Here we reported an unusual case that a 73 years-old male patient with dementia-like symptoms previously, but finally he was diagnosed as temporal lobe epilepsy by the electrophysiological and radiological finding. [Anadolu Psikiyatri Derg 2019; 20(2.000): 217-220]