<unk>  prevalence as of 2017 is estimated to be 0.5–2% overall, and 5–13% of those aged 60 to 99. It is more common in males overall, but equally frequent among men and women below the age of 50. This may partially be due to a referral bias, as violent activity carried out by men is more likely to result in harm and injury and is more likely to be reported than injury to male bed partners by women, or it may reflect a true difference in prevalence as a result of genetic or androgenic factors. Typical onset is in the 50s or 60s.
Rapid eye movement sleep behavior disorder
Circadian rhythm sleep disorder
Delayed sleep phase disorder
Advanced sleep phase disorder
Shift work sleep disorder
Idiopathic hypersomnia
Nightmare disorder
Attention deficit hyperactivity disorder