Summary: Drooling During Sleep
Drooling during sleep is usually harmless and can be caused by sleeping position, fatigue, mouth breathing, or excessive saliva production. However, frequent drooling in adults may sometimes be associated with certain health conditions.
Possible causes include:
- Oral problems – gum disease, throat infections, dental issues, or poorly fitting dentures.
- Facial paralysis – weakened facial muscles may allow saliva to escape from the mouth.
- Gastroesophageal reflux disease (GERD) – acid reflux can stimulate increased saliva production.
- Parkinson’s disease – difficulty swallowing can cause saliva to accumulate.
- Cerebral thrombosis (blood vessel blockage in the brain) – may affect swallowing and facial muscle control.
- Arteriosclerosis – reduced blood flow to the brain may contribute to drooling in some cases.
To reduce drooling, maintain good oral hygiene, avoid sleeping face down, consider sleeping on your back, and consult a doctor if drooling is persistent, sudden, or accompanied by other symptoms such as facial weakness or difficulty swallowing.