The expression in the picture suggests that dry mouth during sleep can have several causes. Here are eight common causes:
- Dehydration
- Drinking too little during the day or losing a lot of fluids (heat, exercise, fever) can cause dry mouth at night.
- Open mouth breathing
- It is one of the most common causes. It can be caused by a stuffy nose, a deviated nasal septum, or simply by habit.
- Stuffy nose or allergies
- Colds, sinusitis, and allergies often force you to breathe through your mouth.
Read more on the next page >>