HAVE YOU EVER NOTICED SALIVA ON YOUR PILLOW AFTER SLEEPING THE CAUSE WILL SURPRISE YOU!

Underlying Medical Conditions
Your nervous system stimulates your salivary glands, which may explain why swallowing is impaired
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and excessive drooling are common with neurodegenerative disorders. For example, around 70% of people with Parkinson’s disease and up to 80% of people with cerebral palsy experience excessive salivation. Difficulty swallowing and excessive drooling may also occur as a result of:

Epiglottitis
Bell’s palsy
Amyotrophic lateral sclerosis (ALS)
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National Library of Medicine, Biotech Information
The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information.