Nocturnal enuresis (bedwetting) as defined by the Canadian Paediatric Society is when a child older than five wets his/her bed more than twice a week.
In this age group, children will outgrow bedwetting at a fast pace. Most of these younger children are not particularly concerned about their bedwetting and treatment is usually not recommended.
Much fewer children, only about 15%, will outgrow the condition each year. The risk that a seven-year-old bedwetter will still be a bedwetter at age 12 is almost 50%. Five years is a very long time for a school-aged child to live with bedwetting. Some children will unfortunately continue to wet their beds for an even longer time. About 1% of 20-year-olds still wet their beds.
Bedwetting is more common in boys. However, girls who still wet their beds after age 7-8 tend to outgrow the condition a bit slower. In the teens, the difference is not as large.
An eight-year-old bedwetter has roughly 1-2 peers in his/her school class who are also bedwetters. This is a very common problem that affects millions of children.