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Diagnoses

Xerostomia

About this diagnosis

Diagnoses are associated with common findings which are used to prescribe appropriate treatment.

Alternate terms: Dry mouth.

Xerostomia (dry mouth) is a condition caused by decreased salivary flow. It is characterized by dry oral mucous membranes which, when normally lubricated by saliva, prevent the cheeks, lips and tongue from sticking to each other and the teeth.

There are varying degrees of severity. Xerostomia is significant because saliva is the body's main defense against dental caries (tooth decay). It contains enzymes that begin the digestion of food, and its flushing action channels food particles toward the tongue. Lack of, or reduced production of saliva can lead to rapid formation of cavities, especially at the gumline, where food plaques accumulate.

Xerostomia can be very unpleasant, as the oral mucous membranes tend to stick to themselves and the teeth.