Drink water all the time, the throat still appears dry, there are several reasons for this situation: 1, chronic pharyngitis caused by. Chronic inflammation of the mucous membrane of the pharyngeal cavity leads to inflammatory reactions, resulting in pharyngeal discomfort and dry throat, which is the most common clinical cause. 2, underlying diseases, such as diabetes, hyperthyroidism, hypothyroidism, etc., can be accompanied by dry throat and discomfort. 3, oral diseases, such as chronic mumps or chronic submandibular adenitis, chronic inflammation leads to saliva The low secretion of saliva causes dry mouth symptoms.