Drooling During Sleep: What It Means and Why It Happens

Mouth breathing is another common factor. When your nose is blocked due to allergies, congestion, or a mild illness, you may breathe through your mouth while sleeping. This can increase the likelihood of drooling. In some cases, conditions like acid reflux may also lead to increased saliva production as the body tries to protect the throat. While occasional drooling is harmless, sudden changes, discomfort, or frequent symptoms may be worth discussing with a healthcare professional for further guidance.