3. Stroke or Recent Neurological Events
A stroke can weaken muscles on one side of the face, making it difficult to keep your mouth closed or swallow effectively.
Sudden-onset drooling is a red flag, especially with speech changes or weakness.
Experts emphasize quick evaluation in these cases.
2. Parkinson’s Disease
Reduced coordination of swallowing muscles is common in Parkinson’s, affecting up to 70-80% of people with the condition.
Studies show drooling often appears early and worsens at night due to decreased automatic swallowing.
You might also notice tremors or stiffness. But the top category is broader…
1. Other Neurological Conditions
Conditions like ALS, cerebral palsy, multiple sclerosis, or muscular dystrophy disrupt nerve signals that control swallowing and facial muscles.
This leads to chronic poor saliva management, with drooling more noticeable during sleep.
Medical sources note it’s especially common in progressive disorders—and this is the one many overlook until symptoms advance.
