Bed-wetting affects 20% of 5-year-olds, 5% of children aged 10 years and older and about 1% of 15-year-olds. It is worth emphasising that it is not the child's fault and that they have no control over it in any way. Bedwetting is not caused by laziness or a desire for attention. Most children grow out of bed-wetting, but it can strongly affect their self-esteem.