If You Drool While Sleeping Often, These 6 Conditions Might Be the Cause
Drooling while sleeping isn’t unusual — especially if you’re lying on your side or stomach. But when it becomes frequent, heavy, or is accompanied by other symptoms, it might be more than just a pillow problem.
Excessive drooling, medically known as sialorrhea , can sometimes point to an underlying neurological, digestive, or muscular issue — particularly in adults.
While occasional drool is nothing to worry about, chronic nighttime drooling — especially when paired with other red flags — should not be ignored.
Let’s explore six possible conditions that could be behind your nightly drool — and what you can do about them.
🧠 1. Neurological Disorders – Parkinson’s Disease
Parkinson’s disease affects muscle control — including the muscles used for swallowing. As a result, people with this condition often experience:
