10 reasons why you drool in your sleep — and what it could mean

2️⃣ Mouth breathing

When the nose is congested (cold, allergies, sinusitis), we breathe through our mouths. This can lead to:

• A prolonged opening of the lips

• An accumulation of saliva

• A discharge during sleep

👉 If it is frequent, it may indicate a chronic ENT problem .

3️⃣ Seasonal or chronic allergies

Nasal allergies cause an obstruction of the upper airways, promoting mouth breathing.
👉 Watch out for symptoms accompanied by sneezing, a stuffy nose, or itching.

Acid reflux can stimulate excessive saliva production (a protective reflex).
Associated symptoms:

• Heartburn

• Nighttime cough

• Bad taste in the mouth

👉 Medical advice is recommended if symptoms persist.

5️⃣ Obstructive sleep apnea

Sleep apnea causes pauses in breathing during the night, which may be accompanied by excessive salivation.
Warning signs:

• Heavy snoring

• Tired upon waking

• Morning headaches

👉 Screening may be necessary.