Why Do People Drool While Sleeping?

Drooling during sleep is common and usually harmless. However, it can sometimes indicate underlying issues. Here are some common causes:

1. Muscle Relaxation: During deep sleep, muscles, including those in the mouth and jaw, relax, causing the mouth to open and saliva to escape.

2. Sleeping Position: Sleeping on your stomach or side makes it easier for saliva to escape, while back sleepers tend to swallow more easily.

3. Nasal Congestion: When you’re congested, mouth breathing can lead to drooling.

4. Excess Saliva Production: Hypersalivation can be caused by oral infections, swollen tonsils, or certain foods and medications.

5. Gastroesophageal Reflux Disease (GERD): Acid reflux can trigger excess saliva production.

6. Neurological Disorders: Conditions like Parkinson’s or strokes may affect swallowing.

When to Seek Help: If drooling is frequent, excessive, or accompanied by other symptoms like trouble swallowing or breathing problems, consult a doctor.