REM sleep behavior disorder shares some clinical similarities with nocturnal epileptic seizures, which can result in misdiagnosis. We report a case of a man with Parkinson Disease diagnosis and parietal and frontal meningiomas who started to have abnormal sleep behaviors, suggestive of REM sleep behavior disorder. Video-polysomnographic showed periodic bilateral occipital epileptiform activity that occurred near arousals, where subtle movements were detected. During REM sleep no loss of atonia nor abnormal behaviors were detected. He was started on antiepileptic drugs, with improvement of the abnormal sleep behaviors. This case raises awareness for a possible role of epileptiform activity in patients with a REM sleep behavior disorder-like symptomatology.