The symptoms of chronic pharyngitis are varied: discomfort in the throat, foreign body sensation, phlegm stagnation, feeling that there is something in the throat that can’t be swallowed and spit out, blockage, swelling, burning, dryness, itching, irritating cough, slight sore throat, etc. The actual fact is that you can find out the reason for this, and you can’t easily diagnose it as pharyngitis. The reason for the chronic pharyngitis: 1. Acute pharyngitis recurrent episodes failed to completely cure and become chronic. 2, surrounding organ tissue inflammation: various nasal diseases and chronic inflammatory stimulation of the upper respiratory tract, such as nasal cavity, sinus, nasopharynx inflammatory secretions through the posterior nostril into the back wall of the pharynx, periodontitis, the direct spread of chronic tonsillitis, etc. 3, occupational factors: mainly occurs in voice workers, such as teachers, actors, salesmen, etc.. Because of long-term multi-lingual and singing, can stimulate the pharynx, causing chronic congestion and cause disease. 4, environmental factors: long-term open-mouth breathing, inhalation or ingestion of irritating substances, such as tobacco, alcohol, dust, harmful gases and spicy food. 5, systemic factors: chronic pharyngitis can also be a local manifestation of certain systemic diseases, such as anemia, indigestion, long-term constipation, heart disease, bronchitis, asthma, liver lesions, diabetes and chronic nephritis, etc.. Allergic constitution, endocrine dysfunction, plant nerve dysfunction, vitamin deficiency and immune deficiency are also likely to cause chronic pharyngitis. 6, gastric-esophageal reflux: recent studies have shown that the stomach contents through the esophagus reflux to the pharynx, the mucous membrane of the throat stimulation, can lead to reflux pharyngitis, which is also one of the common causes of chronic pharyngitis, should be paid attention to.