If you drool while sleeping often, check for these 6 diseases

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.