Sexsomnia: A Specialized Non-REM Parasomnia?

Area of Science:

• Neurology
• Sleep Medicine
• Forensic Psychiatry

Background:

• Sexsomnia, or sleep sex, is a parasomnia characterized by sexual behaviors during sleep.
• Understanding the clinical and polysomnographic features of sexsomnia is crucial for diagnosis and management.
• Previous research has highlighted the potential for sexsomnia to have significant personal and legal ramifications.

Purpose of the Study:

• To characterize patients diagnosed with sexsomnia.
• To compare the clinical and sleep characteristics of sexsomnia patients with healthy controls and individuals with sleepwalking.
• To explore the relationship between sexsomnia and sleepwalking.

Main Methods:

• Seventeen patients diagnosed with sexsomnia and 89 patients with sleepwalking/night terrors were recruited.
• Participants underwent clinical interviews and completed the Paris Arousal Disorder Severity Scale (PADSS).
• Video-polysomnography (PSG) was conducted for 1-2 nights to monitor sleep patterns and behaviors.

Main Results:

• Sexsomnia predominantly affected males (70.6%) and involved behaviors such as fondling, intercourse, masturbation, and orgasm during sleep.
• A significant proportion of sexsomnia patients (47%) had a history of sleepwalking/night terrors.
• Patients with sexsomnia exhibited more N3 sleep stage awakenings than controls and showed evidence of cortico-cortical dissociation on EEG.

Conclusions:

• Sexsomnias are confirmed to have a male predominance and can result in severe clinical and forensic consequences.
• The findings suggest a spectrum of arousal disorders, ranging from typical sleepwalking to sexsomnia.
• Further research is warranted to elucidate the neurobiological underpinnings and long-term management strategies for sexsomnia.