Also known as Xerostomia, Dry Mouth, Decreased Saliva, and Hyposalivation
Xerostomia (also termed dry mouth or dry mouth syndrome) is the medical term for the subjective symptom of dryness in the mouth, which may be associated with a change in the composition of saliva or reduced salivary flow (hyposalivation) or have no identifiable cause.Source: Wikipedia
The most common causes of mouth dryness are high blood pressure, obstructive sleep apnea (osa), and diabetes. Other possible causes, such as salivary gland disorder, are more rare.
Within all the people who go to their doctor with mouth dryness, 59% report having abnormal breathing sounds, 37% report having anxiety and nervousness, and 32% report having thirst.
Patients with mouth dryness often receive hematologic tests, radiographic imaging procedure, complete blood count, electrocardiogram, glucose measurement, kidney function tests, intravenous fluid replacement and electrolytes panel .
The most commonly prescribed drugs for patients with mouth dryness include nortriptyline, gemfibrozil, barium sulfate, efavirenz/emtricitabine/tenofovir, olopatadine nasal, diphenoxylate (lomotil), isoniazid, terconazole topical, megestrol (megace), azathioprine, quinidine, theophylline and acetylcysteine .
Groups of people at highest risk for mouth dryness include age 75+ years age 60-74 years. On the other hand, age 1-4 years and age < 1 years almost never get mouth dryness.