Dry Mouth Upon Waking: Causes, Solutions, and Advice from a Dentist
Dry mouth upon waking, also known as xerostomia, is a very common condition. It is characterized by a sticky or pasty feeling in the mouth, a sensation of dehydration, and sometimes an unpleasant taste. While it is usually harmless, it can occasionally signal an underlying issue. So why do we wake up with a dry mouth, and how can it be relieved? Here are explanations and tips from a dentist.
Why Do We Have a Dry Mouth During the Night?
During sleep, salivary gland activity naturally decreases, leading to reduced saliva production. Saliva plays a vital role: it keeps the mouth moist, protects teeth, aids swallowing, and initiates digestion.
Another frequent factor is mouth breathing, often linked to nasal congestion, snoring, or certain nighttime habits. As air passes through the mouth for several hours, it dries out the oral tissues.
Who Is Most Affected by Dry Mouth?
“Older adults are more affected because their salivary glands function less efficiently,” explains Dr. Christophe Lequart, dentist and spokesperson for the French Union for Oral Health (UFSBD).
Medical conditions that can cause dry mouth
Dry mouth may also be associated with:
-
Sjögren’s syndrome, an autoimmune disease affecting the salivary and tear glands;
-
Glossodynia (burning mouth syndrome), often occurring after menopause, causing painful burning sensations on the tongue with no identifiable cause;
-
Diabetes, Parkinson’s disease, Hodgkin’s disease, or HIV;
-
Cancer treatments such as chemotherapy or radiotherapy.
In severe cases, some people produce little to no saliva and must use artificial saliva substitutes to speak, eat, and protect their oral health.
