When It’s a Warning Sign
Sometimes, drooling can indicate a deeper issue. One possible cause is gastroesophageal reflux disease (GERD). When stomach acid moves up into your throat, your body produces more saliva to neutralize it — leading to drooling.
Neurological disorders may also play a role. Conditions like facial paralysis, Parkinson’s disease, or certain types of epilepsy can affect muscle control, causing saliva to pool or leak from the mouth during sleep.
Additionally, certain medications — especially those that affect the central nervous system, such as antidepressants or antipsychotics — can disrupt saliva regulation. If you’ve started a new medication and notice increased drooling, it’s worth discussing with your doctor.
Poor oral hygiene or dental issues can contribute too. Gum inflammation or untreated cavities may trigger your body to produce extra saliva as a protective response.
