Family psychologist Dr Jenny Leonard on bedwetting:
Bedwetting can be simply down to a child maturing at a slower rate than others, which is nothing to worry about.
However, there’s also evidence that anxiety and stress can trigger the problem. It could be that they’re finding school hard, or picking up on strain at home.
It’s best not to make this into a big deal. But, equally, there’s no point pretending it’s not happening. Talk about it with the child calmly and matter-of-factly, and reassure them they will get better.
You could also think about what might be bothering your child. Explain to them that it’s okay to have worries about things.
Make sure they go to the toilet before they go to bed, and double-make the bed with a waterproof layer between the sheets, so you can take one sheet off and use the other without too much disturbance. - Daily Mail