3. Neurological Disorders – When the Brain Can’t Signal Properly
What They Are:
Conditions like Parkinson’s disease, ALS (Lou Gehrig’s disease), cerebral palsy, or stroke can impair the nerves and muscles involved in swallowing.
Why They Cause Drooling:
These disorders can weaken or delay the swallowing reflex, so saliva builds up in the mouth and spills out during sleep — even if you’re producing a normal amount.
Other Symptoms:
Tremors or muscle stiffness
Slurred speech
Difficulty chewing or swallowing (dysphagia)
Facial weakness or drooping
Unexplained weight loss
What to Do:
If you notice drooling along with any neurological symptoms, consult a neurologist. Early diagnosis can lead to better management and improved quality of life.
4. Allergies or Sinus Issues – The Mouth-Breathing Trap
What They Are:
Chronic nasal congestion from allergies, sinus infections, or deviated septum can block your nasal passages, forcing you to breathe through your mouth.
Why It Causes Drooling:
Mouth breathing dries the throat but can also overstimulate saliva glands. Combined with poor swallowing during sleep, this leads to drooling.
Other Symptoms:
Stuffy or runny nose
Postnasal drip
Frequent sneezing or sinus pressure
Dry throat in the morning
What to Do:
Treat allergies with antihistamines or nasal corticosteroids. For chronic sinus problems, see an ENT (ear, nose, and throat) specialist. Clearing your airways can stop the drool — and improve your sleep.
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