Forensic Implications of the Parasomnias.

Although many sleep-related behaviors are benign, others can result in physical or sexual aggression toward bed partners or others. Individuals who engage in sleep-related violence (SRV) and sexual behavior in sleep (SBS) may face legal sanctions for their behavior. Attorneys or legal decision-makers may call on an expert to evaluate a defendant and opine about the veracity of an alleged parasomnia diagnosis, the criminal responsibility of the defendant, and his risk of violence to others. This article reviews the phenomena of SRV and SBS and guides evaluators in the forensic considerations relevant to parasomnias.