Breathing Issues That Increase Nighttime Drooling
If the nose isn’t working properly, the mouth takes over.
Mouth breathing is one of the strongest contributors to drooling at night.
Common causes include:
- nasal congestion from colds or sinus infections
- seasonal or chronic allergies
- deviated septum
- chronic nasal inflammation
When airflow is restricted, the body compensates — often by increasing saliva production to protect the mouth and throat.
Sleep apnea can also play a role. People with untreated apnea may breathe irregularly, snore, or sleep with their mouth open for long periods.
Drooling alone doesn’t mean sleep apnea — but combined with loud snoring, choking sensations, or daytime fatigue, it’s worth mentioning to a doctor.
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