Drooling during sleep may seem harmless, but in some cases it can be a sign that your body is trying to communicate an underlying issue. Occasional drooling is normal, especially if you sleep deeply or on your side, but frequent or excessive drooling shouldn’t be ignored.
One common cause is blocked nasal passages due to allergies, colds, or sinus problems, which force you to breathe through your mouth. Acid reflux, dental problems, or poorly fitting dentures can also lead to increased saliva production at night. In some cases, drooling may be linked to sleep disorders such as sleep apnea.


