2. Sleep Apnea
This is a serious sleep disorder where breathing stops and starts repeatedly. People with sleep apnea often sleep with their mouths open and may drool more. If you snore heavily or feel very tired during the day, it’s worth getting checked.
3. Acid Reflux or GERD
Gastroesophageal reflux disease can cause excessive saliva production, especially when lying down. If you feel heartburn or a sour taste in your mouth at night, this could be linked to drooling.4. Allergies
Seasonal allergies or food allergies can lead to increased mucus and blocked nasal passages, both of which encourage mouth breathing and drooling during sleep.
5. Tonsillitis or Throat Infections
When your throat is sore or your tonsils are inflamed, swallowing becomes painful. As a result, saliva collects in your mouth and leaks out during sleep.
