Does sleep apnea cause severe dry mouth?

Yes, sleep apnea can lead to severe dry mouth, often due to increased mouth breathing during sleep. When individuals with sleep apnea breathe through their mouths instead of their noses, it can result in reduced saliva production and dryness. Additionally, some treatments for sleep apnea, such as the use of continuous positive airway pressure (CPAP) machines, can also contribute to dry mouth symptoms.