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3. Neurological Disorders
Certain neurological conditions can impair muscle control in the mouth and face, making it difficult to manage saliva properly. Disorders such as Parkinson’s disease, cerebral palsy, ALS (amyotrophic lateral sclerosis), and stroke are known to cause excessive drooling.
In such cases, drooling can occur both during the day and night, as the muscles responsible for swallowing and facial control weaken or become uncoordinated.
Symptoms that may accompany drooling in neurological conditions:
Slurred speech
Tremors or muscle weakness
Loss of coordination
Difficulty swallowing
If drooling is accompanied by any of these neurological symptoms, it is crucial to seek medical evaluation immediately.
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4. Sinus Infections or Allergies
Blocked nasal passages due to allergies, colds, or sinus infections can force you to breathe through your mouth while sleeping, which can cause drooling. When the nose is congested, the mouth opens to compensate for restricted airflow, and saliva can easily escape.
Look for these signs:
Nasal congestion or runny nose
Facial pressure or sinus pain
Sneezing and watery eyes
Postnasal drip
Treating the underlying allergy or infection usually helps resolve the drooling issue.
