What Causes Dry Mouth, Dry Tongue, and Dry Throat?
Dry mouth, dry tongue, and dry throat can result from numerous causes. The most common is chronic pharyngitis. This condition often stems from daily lifestyle habits—such as consuming spicy foods, smoking, drinking alcohol, or eating insufficient fruits and vegetables—leading to nutritional imbalance. In such cases, it is essential to adopt a balanced diet, reduce intake of irritating foods, quit smoking and alcohol, and minimize physical irritants.

Secondly, poor air quality—especially high levels of airborne dust—can irritate the pharynx and lead to these symptoms. Under such conditions, wearing a mask when outdoors and limiting outdoor activities during periods of poor air quality are advisable.
Thirdly, gastroesophageal reflux disease (GERD), wherein gastric acid repeatedly refluxes into the pharynx, may cause chronic pharyngeal inflammation and subsequently result in dry mouth and throat. In addition to treating local pharyngeal issues, management must address underlying gastric and gastrointestinal disorders.

Fourthly, age-related degenerative changes—particularly in elderly individuals—may lead to pharyngeal atrophy and dryness. Besides managing local chronic inflammation, supplementation with vitamins or cod liver oil may help slow this degenerative process.