What is Dry Mouth?
Dry mouth, also called xerostomia (ZEER-oh-STOH-mee-ah), is the condition of not having enough saliva, or spit, to keep the mouth wet. Dry mouth can happen to anyone occasionally—for example, when nervous or stressed. However, when dry mouth persists, it can make chewing, eating, swallowing and even talking difficult. Dry mouth also increases the risk for tooth decay because saliva helps keep harmful germs that cause cavities and other oral infections in check.
Dry mouth occurs when the salivary glands that make saliva don't work properly. Many over-the-counter and prescription medicines, as well as diseases such as diabetes, Parkinson's disease and Sjogren's syndrome, can affect the salivary glands. Other causes of dry mouth include certain cancer treatments and damage to the glands' nerve system. It's important to see your dentist or physician to find out why your mouth is dry.
For full article: http://www.nidcr.nih.gov/OralHealth/Topics/DryMouth/
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