Insomnia

Abstract

Insomnia is the most common sleep complaint both in the general population and in various medical and psychiatric patient populations. Studies in recent years have shown typical prevalence rates of about one-third in randomly selected adult populations. For example, a recent Gallup poll found that almost one-half of adult Americans complained of disturbed sleep, with 35% reporting this as a problem “only at certain times” and an additional 12% stating that this was a problem “on a frequent basis.” Women and adults under 35 years of age comprised populations more likely to complain of insomnia.