Is there a connection between sweating and drooling while sleeping?

Yes, sweating and drooling during sleep can be connected, as both are regulated by the autonomic nervous system, which controls involuntary functions like temperature regulation and saliva production.

Why it happens: During deep sleep (especially REM), your body relaxes muscles—including those around the mouth—which can cause drool. At the same time, the autonomic system may trigger night sweats due to hormonal shifts, sleep position, room temperature, or underlying conditions like sleep apnea, GERD, infections, or anxiety.

When to be concerned: Occasional drooling and sweating are usually harmless. However, if both occur frequently together, they may signal an issue such as obstructive sleep apnea, acid reflux, a nervous system disorder, or a medication side effect worth investigating.

Because symptoms like these can stem from many possible causes—some minor, some requiring medical attention—guessing isn't your best move. A free, instant, online symptom check uses AI-driven questions based on your specific symptoms to help you understand what might be going on and what steps to take next. It takes just a few minutes, costs nothing, and gives you clearer direction before booking a doctor's visit—saving you time, worry, and unnecessary uncertainty.

Reviewed for medical accuracy: 07/15/2026