What is the cause of dry throat? It can be caused by diseases of the throat itself, such as chronic pharyngitis and pharyngeal reflux disease. Because the pharynx submucosal lymphoid follicle hyperplasia is obvious, there will be more secretions attached to the surface, and at the same time, the gastric acid reflux, caused by the mucous membrane of the pharynx edema. Patients need to clear their voices frequently before symptoms can be relieved, and there is irritating dry cough in the morning, accompanied by dry heaving in severe cases, which some of the frequent throat movements and swallowing large amounts of air, will lead to further aggravation of the symptoms. It can also be a manifestation of systemic diseases in the throat, such as hypothyroidism, vitamin deficiency, endocrine dysfunction, etc. It is necessary to actively treat the primary disease before the discomfort in the throat can be relieved.