
Sleep sex, also known as sexsomnia, is a sleep disorder where an individual engages in sexual activities during sleep. Sexsomnia is a form of parasomnia, which is an abnormal activity that occurs while an individual is asleep. It is characterised by sexual behaviours that occur during non-rapid eye movement (NREM) sleep, which is the deepest stage of the sleep cycle. Sexsomnia can cause a range of behaviours, from self-touching and sexual motions to seeking sexual intimacy with others. The disorder can have harmful emotional, psychosocial, and even criminal consequences, and it has been used as a criminal defence in court for alleged sexual assault and rape cases.
| Characteristics | Values |
|---|---|
| Other Names | Sexsomnia, Sleepsex |
| Type of Disorder | Parasomnia (abnormal activity during sleep) |
| Sleep Stage | Non-rapid eye movement (NREM) sleep |
| Symptoms | Masturbation, sexual intercourse, sexual motions, heightened sexual aggression, decreased inhibitions, unresponsiveness, minimal responsiveness to conversation or environment |
| Risk Factors | Sleep deprivation, stress, anxiety, depression, alcohol, substance use, sleeping conditions, certain medications, other parasomnias (e.g., sleepwalking, sleep paralysis, sleep talking) |
| Treatment | Medication, improving sleep hygiene, reducing stress or triggers, treating underlying disorders (e.g., sleep apnea, restless leg syndrome), switching medications, reducing alcohol intake, addressing substance abuse |
| Diagnosis | Polysomnography (PSG), sleep studies, interviews, medical records |
| Prevalence | Rare, estimated at around 7-8% of referrals to sleep disorder clinics, possibly higher due to underreporting |
| Legal Implications | Used as a criminal defence in sexual assault and rape cases |
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What You'll Learn

Sexsomnia is a sleep disorder
Sexsomnia, also known as sleep sex, is a sleep disorder. It is a distinct form of parasomnia, or an abnormal activity that occurs while an individual is asleep. It is characterised by an individual engaging in sexual acts while asleep, specifically during non-rapid eye movement (NREM) sleep. This is the dreamless, deepest stage of the sleep cycle.
Sexual behaviours that result from sexsomnia are not to be mistaken with normal nocturnal sexual behaviours, which do not occur during NREM sleep. Normal sexual behaviours during sleep include nocturnal emissions, nocturnal erections, and sleep orgasms. Sexsomnia can present in an individual with other pre-existing sleep-related disorders, such as sleepwalking, sleep talking, and sleep apnea. It is most often diagnosed in males beginning in adolescence, and those affected often have no recollection of their sexual behaviours while asleep.
Sexsomnia can be triggered by physical contact initiated by a partner or another individual sharing the same bed. It can also be triggered by various external factors, such as stress, alcohol consumption, sleeping conditions, and sleep deprivation. Certain medications, such as the sedative-hypnotic zolpidem (commonly known as Ambien), have also been linked to an increased risk of sexsomnia.
Treatment for sexsomnia depends on the underlying cause but often includes medication, improving sleep hygiene, and reducing stress or triggers. In some cases, a medical diagnosis of sexsomnia has been used as a criminal defence in court for alleged sexual assault and rape cases.
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It's a type of parasomnia
Sleep sex, or sexsomnia, is a distinct type of parasomnia, a category of sleep disorders that involve abnormal behaviors and movements during sleep. Parasomnias occur during the transition between sleep stages or between sleep and wakefulness. They can happen during non-rapid eye movement (NREM) sleep or rapid eye movement (REM) sleep, and they include a range of behaviors, from relatively mild actions like sleep talking to more complex and potentially harmful activities such as sleepwalking. Sexsomnia falls into the latter category, and it involves engaging in sexual behaviors while still asleep.
During an episode of sexsomnia, a person might initiate sexual activity, respond to a partner's advances, or even exhibit aggressive sexual behavior. This can include masturbation, fondling, oral sex, intercourse, and other sexual acts. Often, the person has no memory of these events upon waking and may only become aware of their nocturnal activities if a bed partner reports them or if there is physical evidence, such as semen stains or used contraception. It is important to distinguish sexsomnia from simply being sexually aroused during sleep, which can occur without any associated disorder.
Like other parasomnias, sexsomnia arises from a disruption in the normal sleep cycle. It often occurs during the transition from deep sleep to a lighter stage of sleep or wakefulness. This transitional state is characterized by a dissociation between different parts of the brain, with some areas remaining asleep while others are awake. As a result, the person may exhibit complex behaviors that are usually under voluntary control, but these actions occur without conscious awareness or intent. In the case of sexsomnia, the sexual behaviors are not premeditated or consciously desired by the affected individual.
The exact causes of sexsomnia can vary and are not fully understood. However, several factors are believed to contribute to its development. One key factor is sleep deprivation or disruption. When individuals are overly tired or their sleep patterns are disturbed, the normal sleep cycle can be disrupted, increasing the likelihood of parasomnias. Stress and anxiety can also play a role, as they can affect both sleep quality and sexual behavior. Additionally, certain substances, such as alcohol or sedatives, can increase the risk of sexsomnia by altering sleep patterns and lowering inhibitions.
Sexsomnia is often diagnosed through a comprehensive evaluation that includes a detailed sleep history, sleep diaries, and, in some cases, polysomnography (overnight sleep study). Treatment typically involves a combination of strategies aimed at improving sleep hygiene, addressing any underlying sleep disorders or psychological issues, and establishing clear boundaries and safety measures for the individual and their bed partner. Medications may also be prescribed in some cases to help regulate sleep and reduce the frequency of episodes.
It is important to recognize that sexsomnia is a legitimate sleep disorder and that affected individuals should not be ashamed or embarrassed to seek help. With proper diagnosis and treatment, individuals with sexsomnia can manage their symptoms effectively and regain control over their sleep and sexual behaviors.
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It can lead to criminal accusations
Sleep sex, or sexsomnia, is a rare sleep disorder where individuals engage in sexual behaviours while asleep and have no conscious awareness of their actions. It can involve a range of activities from masturbation to full sexual intercourse, and even sexual assaults. Due to the nature of these behaviours and the potential for non-consensual acts, sleep sex can lead to criminal accusations and legal repercussions.
Individuals with sexsomnia may find themselves in situations where they are accused of sexual assault or rape. As the behaviour occurs during sleep, the individual has no control over their actions and may not be aware of what they are doing. This can result in criminal charges being brought against them, as the law typically views sexual activity without consent as a criminal offence. The defence of 'non-insane automatism', which refers to involuntary behaviour occurring without conscious control, can be used in such cases. However, the defence is not always successful, and the outcome of these cases can vary depending on the specific legal system and the evidence presented.
The legal consequences of sleep sex can be severe, with potential penalties including prison sentences and registration as a sex offender. It is crucial for individuals who engage in sleep sex to seek professional help and a proper diagnosis to build a defence and potentially mitigate any legal repercussions. Medical evidence and expert testimony can play a crucial role in these cases by providing context and explaining the involuntary nature of the behaviour. It may also be necessary to demonstrate a history of the disorder and show that the individual was unaware of their actions and had no intent to commit a criminal act.
Additionally, the impact of sleep sex on the lives of those involved can be significant. Accusations of sexual misconduct can damage relationships, careers, and reputations. The stigma associated with sexual crimes can also lead to social isolation and mental health issues. It is important to recognize that sleep sex is a legitimate medical condition and that those affected deserve support and understanding, as well as access to appropriate medical and legal resources.
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Triggers include stress, alcohol, and sleep deprivation
Sleep sex, or sexsomnia, is a sleep disorder and a distinct form of parasomnia, or abnormal activity that occurs while an individual is asleep. Sexsomnia is characterised by an individual engaging in sexual acts while in non-rapid eye movement (NREM) sleep.
Sexsomnia can be triggered by physical contact initiated by a partner or another individual sharing the same bed. It can also be triggered by certain medications, including the sedative-hypnotic zolpidem (commonly known by the brand name Ambien), which is frequently used to treat insomnia.
Stress and sleep deprivation are also known triggers of sexsomnia. Sleep deprivation can cause neurons to malfunction, directly affecting an individual's behaviour. Alcohol is another trigger, with heavy alcohol use contributing to the development of insomnia, a sleep disorder characterised by difficulty falling asleep and staying asleep. Alcohol disrupts sleep architecture, the normal phases of deeper and lighter sleep that we go through every night. As alcohol levels drop, the brain kicks into overdrive, and you may find yourself tossing and turning.
People with sexsomnia may exhibit behaviours ranging from masturbation to sexual intercourse. They may appear to be fully awake, but often have no recollection of their sexual behaviours.
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It can be treated with medication and lifestyle changes
Sexsomnia, or sleep sex, is a parasomnia characterised by an individual engaging in sexual acts while in non-rapid eye movement (NREM) sleep. It can be treated with medication and lifestyle changes.
Medications
Over-the-counter (OTC) sleep aids often contain antihistamines, which can make you drowsy. Natural remedies such as melatonin and valerian supplements can also promote sleep. Prescription sleeping pills are also available, but they are not recommended for long-term use due to the risk of dependence and addiction. It is important to consult a healthcare provider before taking any sleep medication to ensure safety and avoid potential side effects.
Lifestyle Changes
Improving sleep hygiene is crucial for treating sexsomnia. This includes creating a comfortable and inviting bedroom environment with optimal lighting, temperature, and scent. Eliminating sources of noise and light disruption, such as using blackout curtains, a sleep mask, or a white noise machine, can also enhance sleep quality.
Additionally, addressing underlying sleep disorders, such as sleep apnea, through diagnosis and treatment can significantly improve sleep and, consequently, reduce the occurrence of sexsomnia. Prioritising communication and maintaining sleep health are also essential for improving sleep and overall well-being.
Furthermore, lifestyle changes such as regular exercise, a healthy diet, and stress reduction can positively impact both sleep and sex life. Exercise promotes the release of hormones important for sexual arousal and enhances mood and energy levels, which are beneficial for sexual activity. Adequate sleep is also crucial for a healthy sex life, as sleep deprivation can negatively affect mood, energy levels, and sexual performance.
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Frequently asked questions
Sleep sex, or sexsomnia, is a sleep disorder where sexual behaviour is initiated during sleep during non-rapid eye movement (NREM) sleep. It is a type of parasomnia, or abnormal activity, that occurs while an individual is asleep.
The symptoms of sleep sex vary depending on the person. However, the underlying feature of this parasomnia is that a sleeping person exhibits sexual behaviours that they are unaware of and unable to control. These behaviours can range from self-touching or sexual motions to seeking sexual intimacy with others.
Treatment for sleep sex depends on the underlying cause but often includes medication, improving sleep hygiene, and reducing stress or triggers. If sleep sex is caused by another sleep disorder, such as sleep apnea, treating the underlying disorder may also resolve the unintended sexual behaviours.



























