National Sleep Foundation

Chapter 6: Parasomnias

Prevalence of Enuresis (Bedwetting)

Enuresis is estimated to occur in about 20 percent of 5-year-olds and about 10 percent of 10 year-olds. In children older than age 10, episodes remit spontaneously at a rate of about 15 percent per year.1

Girls have slightly lower incidence rates than boys during childhood, but rates equalize in the teen years.2

The mean incidence rate is about 1-2 percent of 18-year-olds, and .05 percent of adults; enuresis can begin in adulthood.3 4


  1. Caldwell PH, Edgar D, Hodson E, Craig JC. Bedwetting and toileting problems in children. Med J Aust. 2005;182:190-195.
  2. Wen JG, Wang QW, Chen Y, Wen JJ, Liu K. An epidemiological study of primary nocturnal enuresis in Chinese children and adolescents. Eur Urol. 2006;49:1107-1113.
  3. Hublin C, Kaprio J, Partinen M, Koskenvuo M: Nocturnal enuresis in a nationwide twin cohort. Sleep. 1998;21:579-585.
  4. Mahowald MW, “Other Parasomnias,” in Kryger M, Roth T, Dement W (ed.), Principles and Practice of Sleep Medicine (5th Edition), St. Louis: Elsevier Saunders, 2011, pages 1198-1105.