what causes extreme dry mouth at night
Other diseases which cause dry mouth, not only during the night but during the day as well â these are viral and bacterial infections and Sjogrenâs syndrome, all of which have an influence on the flow of saliva. Other problems that affect the saliva flow include: 1  Bellâs palsy. 2  Tumors. 3  Salivary gland stones. 4  Depression.
Physical Concerns. Dry mouth is a red flag for other physical problems. For instance if an individual is diabetic and the disease is being poorly managed this can cause dry mouth during the night or dry mouth can be a sign that the individual has diabetes.