The medical term for dry mouth is xerostomia.
People with dry mouth don’t have enough saliva to keep the mouth wet. Also, it’s normal for your mouth to become dry when it occurs as a result of stress and anxiety. Approximately, one in five people experiences dry mouth. Dry mouth is not a disease, but constant dryness in the mouth can indicate diabetes or joint disorders.
Here are a few reasons why your mouth is always dry
During menopause, women experience estrogen and progesterone fluctuations which lead to dry skin and mouth. Hormone imbalance affects the mucous membranes in the body.
Nasal and sinus problems
Nasal congestion reduces the amount of saliva and causes dry mouth. Blocked nasal passages can cause the mouth breathing syndrome which leads to dry mouth and abnormally large tonsils.
Decongestant medicines are used to relieve a stuffy nose. They work by narrowing the blood vessels in the mucous membrane and reducing the swelling and breathing difficulties. But, the prologued use of these medicines can cause side effects such as dryness of the nose and mouth.
Mouthwashes that contain alcohol destroy bacteria in your mouth and fight bad breath. But, the presence of alcohol in mouthwashes can also cause side effects, such as dryness in the mucous membranes. Saliva removes cavity-causing bacteria and protects your teeth from decay, so a dry mouth increases the risk of dental problems. Use alcohol-free mouthwashes.
Dry mouth can occur as a result of heartburn or acid reflux. Stomach acid causes irritation and inflammation of the lining of the esophagus. This condition leads to dry throat and mouth.
Too much caffeine
Regular consumption of drinks which contain caffeine cause dehydration and dry mouth is a clear sign of it. Coffee and other drinks that contain caffeine are considered as diuretics which can cause frequent urination and dry mouth.
People with high blood sugar levels often experience dry mouth. Increased blood glucose levels affect the function of your kidneys because they get overworked to clear the excess sugar from the blood. This condition leads to dehydration. Certain types of medications which are used to treat diabetes can also cause dry mouth.
Rheumatoid arthritis, lupus or vasculitis are autoimmune diseases which cause your immune system to attack normal cells. People with these diseases have dry eyes and mouth.
Dry mouth can occur as a result of the side effects of more than 400 different medications.