Why you Pour Saliva on Your Pillow While Sleeping and What it means according to science?
Although occasional drooling during sleep is usually harmless, medical experts say it can be linked to sleeping habits, nasal congestion or certain health conditions.
One common explanation is sleeping on your side or stomach, which allows saliva to escape through the mouth. A blocked nose caused by allergies, colds or sinus inflammation can also encourage mouth breathing and increase drooling.
Other possible causes include excessive saliva production, acid reflux and reduced swallowing frequency during sleep. Understanding the five common reasons behind nighttime drooling can help you recognise when it is normal and when it may require medical attention.