Bed-wetting is a messy, inconvenient and expensive business. It leads to frustration and anger with a family, and guilt and shame on the part of the child.
The causes of bed-wetting vary. Some children have small bladders; for others, the neural connection between brain and sphincter is late to develop. There are children for whom potty training has been too rigid, and tinged with anxiety; there are others who have been inadequately trained.