Why do children always sleep with their mouths open

Patient's question:

No

Doctor's answer:

I don't know if your baby has recently had a cold, which might be causing his nose to breathe not very smoothly. If that's the case, it's easy to explain why he's keeping his mouth open. But if not, it could be related to his sleeping position. You can consciously adjust your child's sleeping position, which might very likely make him stop opening his mouth. Adjust his sleeping position to side-sleeping, and the effect should be quite noticeable.