The term describes a type of non-REM parasomnia, but a particular episode cannot be diagnosed from a description alone. Memory and awareness can vary; lack of memory by itself does not establish what happened or prove a diagnosis.
What is sexsomnia?
Non-REM parasomnias involve incomplete awakenings from sleep. In sexsomnia, the observed behavior is sexual in nature. A review of the clinical evidence describes the condition and gaps in diagnosis and management. Experiences differ, and episodes can be distressing for the person and anyone affected.
Possible contributing factors
Sleep deprivation, stress, alcohol, certain medications and other sleep disorders can contribute to arousals in some people. Sleep apnea may be relevant and should be evaluated when symptoms suggest it. These factors do not establish a cause in an individual case, and sexsomnia should not be inferred from libido, relationship problems or a single incident.
How is it assessed?
A clinician or sleep specialist reviews the history, medications, sleep schedule and descriptions from the person and, with their agreement, a witness. Testing may include an overnight sleep study, sometimes with video, to investigate other conditions. An event may not happen during testing, so the study is only one part of assessment.
Safety and consent come first
A sleeping person cannot give conscious consent. If an episode risks unwanted contact or injury, arrange separate sleeping spaces or other agreed safety measures until the situation has been assessed. Discuss boundaries while everyone is awake. Anyone affected deserves support and their experience should be taken seriously.
A suspected sleep disorder does not establish that a particular act occurred involuntarily or resolve questions of consent or responsibility. If someone is in immediate danger, contact emergency services.
Treatment and support
Management is individualized. A specialist may address sleep deprivation, contributing medicines, alcohol use or another sleep disorder, and recommend a safety plan. Some people may need additional behavioral or medical treatment; evidence remains limited. Do not stop prescribed medication without discussing it with the prescriber.
A systematic review of behavioral treatments for non-REM parasomnias highlights the need for more research. Support for partners or other affected people may also be helpful.
Frequently asked questions
Does someone always have no memory of an episode?
No. Awareness and memory can vary, and memory alone cannot establish a diagnosis.
Can sleep apnea contribute?
It may be relevant for some people; a clinician can assess and treat it when present.
Should we wait for another episode before seeking help?
No. Seek an evaluation and make a safety plan if there is concern about unwanted contact or injury.