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why do we dribble when we sleep

If you drool while sleeping, you re probably familiar with drool stains on your pillow and having to wipe your mouth when you wake up. You also may have noticed that saliva leaks out mostly when you sleep on your sides and rarely when you sleep on your back. Thatвs because,
when you sleep on your back, saliva settles at the back of your throat and eventually drains down. There are different glands that contribute to the production of saliva. And the amount of saliva your body produces while youвre asleep is quite less than while youвre awake. In the resting state, the rate of secretion of saliva has been estimated to be 0. 3 to 1 mL/1. 7 m2/min. You donвt drool when youвre awake because you swallow up the saliva.

But when youвre sleeping youвre relaxed and so are your facial muscles. Hence, whatever saliva the glands produce gets accumulated in your mouth, which then leaks out of the mouth because you donвt swallow it. Coming to the clinical indications, drooling could be associated with the following seven mild to severe medical complications. 1. Improper Sleeping Position When you sleep on your side or your stomach, your mouth often opens as you relax, and saliva can dribble out. But when you sleep on your back, you naturally swallow during sleep, which prevents drooling. 2. Allergies Allergic rhinitis and certain food allergies cause over-production of saliva resulting in drooling. Read about six everyday things that can cause allergies. 3.

Acidity or GERD Scientists believe that acid reflux episodes cause the gastric acid to stimulate the esophagus, as a result the esophagosalivary reflex gets excited leading to excessive saliva production. 4. Sinus infection Upper respiratory tract infections are usually associated with breathing and swallowing problems, which cause drooling due to accumulation of saliva. Also, when your nasal passage is blocked due to flu, you tend to Drool isn t produced when you re completely asleep. however, it is stimulated by the parasympathetic nervous system (also known as the rest and digest half of the nervous system, the calming half). One of the main reasons for drool is to keep your mouth wet, your airway lubricated, and components in it have a germicidal effect, killing off some of the bad bugs that like to colonize your mouth.

When you re falling asleep, these factors are still in play - and also, due to your horizontal position, less saliva goes down your throat. The combination of the parasympathetic nervous system being stimulated, the change in posture, and the general relaxation of muscles. Once asleep, however, the drooling stops - which is why your mouth tastes bad when you wake up! Your mouth has dried out and new bacterial colonies have popped up, leading to a nasty taste/smell. IF you are still drooling while fully asleep, this can point to underlying issues in sleep, such as sleep apnea.

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