Abnormal sleep in patients with epileptic or dissociative (non-epileptic) seizures: a polysomnography study.

Our findings contradict the commonly reported high comorbidity of OSAHS and epilepsy, and question its purported clinical relevance. High rates of PLMs were found in patients with dissociative seizures. In both patient groups, high awake after sleep onset times were indicative of sleep disruption, which can have an epileptogenic effect and is known to increase dissociative tendencies.