Dry mouth (Xerostomia) is a chronic inflammatory disease where your salivary glands fail to function adequately. As a result there is insufficient saliva production in your mouth to keep it wet. Saliva is needed not only to moisten and cleanse your mouth, but also to prevent infections by fighting bacteria and fungi.
It is common to have a dry mouth occasionally in certain situations, such as when you are nervous, stressed, upset, dehydrated or as a side effect of certain kinds of medication. However, if you are experiencing dry mouth frequently and it is causing you discomfort, it could be a sign of an underlying problem that could lead to serious health complications.
Dry mouth may lead to troubles when speaking, chewing, tasting, swallowing and can even interfere with your appetite. Dry mouth could also lead to other serious health problems, such as increased levels of tooth decay and mouth infections (including thrush). Dry mouth can be the result and symptom of other diseases like Sjögren’s syndrome, <systematic lupus erythematous (lupus)>, <diabetes> and <arthritis>.