Meditation
Jun 19, 2026

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

Mouth breathing:
When the nose is congested (cold, allergies, sinusitis), we breathe through the mouth. This can cause:

A prolonged opening of the lips

An accumulation of saliva

A secretion during sleep

If it occurs frequently, it may indicate a chronic ear, nose, and throat problem.

 Seasonal or chronic allergies
: Nasal allergies can obstruct the upper airways, leading to mouth breathing.
 Watch for symptoms such as sneezing, nasal congestion, or itching.
 Gastroesophageal reflux disease (GERD):
Acid reflux can stimulate excessive saliva production (a protective reflex).
Associated symptoms:

Acidity

Nighttime cough

Bad taste in mouth

Medical advice is recommended if symptoms persist.

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

Loud snoring

Tired upon waking

Morning headaches

A screening test may be necessary.

 Neurological problems (less common):
Some neurological diseases can affect the control of facial muscles and swallowing, leading to difficulty swallowing saliva.
 This remains uncommon in young people without associated symptoms.

 Side effects of medications
Some medications can increase saliva production or alter swallowing:

Sedatives

Some psychiatric treatments

Antiepileptic drugs

 Oral or dental infection:
Inflammation or infection of the gums can stimulate saliva production.
 A visit to the dentist may be helpful.

 Stress and intense fatigue.
Very deep sleep can decrease the frequency of nighttime swallowing, which favors the accumulation of saliva.

 Normal development (in children)
In children and adolescents, nighttime salivation may be related to:

Continuous muscle growth

Temporary mouth breathing

When should you see a doctor?
It is advisable to consult a healthcare professional if nighttime salivation is accompanied by:

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