Lockjaw (trismus) is a painful condition that limits your ability to open your mouth all the way. It occurs when the muscles you use to chew spasm, meaning they can’t relax completely. The term ...
If you use a continuous positive airway pressure (CPAP) machine for obstructive sleep apnea (OSA), you may breathe better at night. But you may also have dry mouth in the morning. Dry mouth is a ...