Pre- and post-surgical psychiatric assessments and intervention by major epilepsy centers in Japan — Nationwide survey

•A questionnaire about psychiatric issues related to epilepsy surgery was sent to major epilepsy centers in Japan.•Twenty-four (77%) of 31 centers responded.•Seventeen (70.8%) centers have incorporated a psychiatrist as part of their epilepsy surgery unit.•No psychiatric assessments prior to surgery are performed at 7 (29.2%) centers.•In 23 (95.8%) of the centers, the risk of post-surgical psychiatric illness is explained prior to surgery.