%0 Case Reports %T The medical-legal aspect of sexual deviant behaviors due to brain lesions: A case report and narrative review of the literature. %A Mokhber N %A Azarpazhooh MR %A Prakash A %A Zamprogna Ballès JA %A Prakash A %J Int J Law Psychiatry %V 58 %N 0 %D May 2018 0 %M 29853002 %F 2.479 %R 10.1016/j.ijlp.2018.01.008 %X We reported a case of sexual assault in a 60-year-old male with no history of mental illness. The lack of memory about the time of the assault and the patient's uncharacteristic behaviour suggested sexual deviant behaviour secondary to a brain lesion. Further investigations revealed a lentiform stroke. A possibility of abnormal sexual behaviour due to an epileptic seizure and/or a destructive brain lesion is suggested. We summarized the history of our patient in this paper and provided a review of the medico-legal aspects of hypersexuality and sexual deviant behaviors due to brain disorders.