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Kent, WA
A 18-year-old male asked:

Why do we sometimes drool when we sleep?

3 doctor answers7 doctors weighed in
Dr. Jon Fishburn
Ophthalmology 30 years experience
Mouth opens: Nocturnal drooling occurs when your mouth cracks open and reflex salivation occurs due to the drying effect of air movement. Maybe occurring intermittently due to nasal congestion I suspect.
Dr. Michael Gabor
Diagnostic Radiology 33 years experience
Drool : Muscles relax, mouth may hang open, and if you are on your side or stomach, gravity and pooled saliva do the rest.
Dr. Carrie Cannon
A Verified Doctoranswered
A US doctor answeredLearn more
Drooling in sleep: Snoring or mouth-breathing from nasal congestion can lead to drooling. Do you suffer from allergies at night? Is sleep apnea a possibility?

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Valley, Alabama
A 28-year-old male asked:

Why do I drool in my sleep ?

2 doctor answers3 doctors weighed in
Dr. Susan Arnoult
Family Medicine 25 years experience
Mouth-breather: Because you sleep with your mouth open and drool runs out. We produce saliva all night and when a person sleeps with the mouth closed there is a stimulus to swallow the saliva at a certain volume.

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Last updated Oct 23, 2017
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