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. That’s 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 you’re asleep is quite less than while you’re awake.
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 breathe with your mouth, which causes the excess saliva to flow out while sleeping.
5. Tonsillitis – Tonsillitis is the inflammation of glands called tonsils present at the back of your throat. Due to inflammation and swelling the passage becomes narrow, thereby obstructing the drainage of accumulated saliva down the throat.
6. Sleep terrors – Drooling is a known symptom seen in people suffering from sleep terrors. Sleep terrors can be manifested in adults as a result of psychopathological reason. They often occur when a person in under severe emotional stress or may be triggered by certain drugs like sedatives, alcohol or even sleep deprivation. Sometimes, drooling is also seen in people suffering from other sleep-related disorders like sleep walking (somnambulism) and somniloquy (sleep talking).
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