Spring is the season of diseases, among which, the respiratory defense against germs decreases and makes it easy to suffer from pharyngitis. Pharyngitis is one of the most common diseases in otolaryngology and is a diffuse inflammation of the mucous membrane, submucous membrane and lymphatic tissue of the pharynx. Upper respiratory tract infections, poor lifestyle habits (such as addiction to alcohol and tobacco), and living and working in an environment with poor air quality for long periods of time can all cause the onset of pharyngitis. The throat is divided into acute pharyngitis and chronic pharyngitis. Acute pharyngitis is often caused by viruses, followed by bacteria. It is most common in winter and spring. It is often secondary to acute rhinitis, acute sinusitis, acute tonsillitis, and is often a complication of measles, influenza, scarlet fever, and other infectious diseases. Cold, fatigue, long-term stimulation by chemical gases or dust, excessive smoking, etc., reduce the body’s resistance, easy to promote its onset. Chronic pharyngolaryngitis: mainly due to incomplete treatment of acute pharyngolaryngitis and recurrent attacks, becoming chronic, or because of various nasal diseases, nasal obstruction, long-term open-mouth breathing, as well as physical and chemical factors, neck radiation therapy and other frequent stimulation of the pharynx. Various chronic systemic diseases, such as anemia, constipation, chronic inflammation of the lower respiratory tract, cardiovascular disease, etc. can also be secondary to this disease. 1. What are the common symptoms of laryngitis? The common symptoms of pharyngitis are: hoarseness, throat discomfort, and foreign body sensation. The patient has a history of prolonged speech, loud shouting, prolonged crying, or a history of inappropriate useful sound, habitual throat clearing, frequent tobacco and alcohol stimulation, chronic laryngitis and early vocal fold nodules pronunciation abnormalities are mostly intermittent, and hoarseness will appear after a little time of vocalization, and persistent hoarseness can also appear when vocal fold lesions are obvious, while vocal fold nodules and vocal fold polyps are mostly persistent hoarseness. In addition, it is accompanied by sore throat and painful swallowing, which may appear after a cold and fever, and may be acute laryngitis. Severe laryngeal pain that does not heal for a long time, the possibility of laryngeal nodules or malignant tumors should also be considered. A hoarse or even piercing voice, accompanied by a feeling of laryngeal obstruction, coughing, blood in sputum, accompanied by a neck mass, older patients should be alert to the possibility of laryngeal cancer. In addition, sudden loss of voice, or low as a whisper, but laughing and coughing can be completely normal, may be hysterical hoarseness. At this time, laryngoscopy shows abnormal vocal fold inversion, but the vocal fold can be normal inversion after coughing. At the same time. Foreign body sensation in the larynx, accompanied by coughing, voice is easily tired, or there is a preference for food before sleep, or frequent acid reflux, belching, may also be esophageal reflux laryngitis. 2.How to prevent laryngitis? With the development of society, people’s pace of life is accelerating, but also affects the change in people’s habits, so that daily life without certain rules, as chronic laryngitis patients should try to do: regular living and living, can not often stay up late, driving at night, because often stay up late will break the original routine, so that the endocrine system disorders, disorders of the internal organs, digestive function of the gastrointestinal lower, if it is necessary for work If it is necessary to work, it is necessary to maintain sufficient sleep every day, diet to make appropriate adjustments; keep the oral cavity clean at all times, so that the morning and evening brush teeth, meal after the mouth, usually drink more water (especially when staying up late), some inflammatory diseases in the mouth and stomach disease to timely treatment. It is the season of alternating warm and cold, pay attention to warmth, sexual intercourse should not be excessive, otherwise it is easy to cause kidney deficiency, causing the kidney, spleen and the deficiency of fire incandescence and cause dysfunction of the internal organs, turbidity steam. In addition, in terms of dietary habits, we must firmly abandon some bad eating habits, quit smoking, quit drinking. Do not eat stimulating food, less fried, pickled food; eat more fresh fruits, vegetables, eat more vitamin-rich fruits, such as: kiwi, figs, etc., watermelon is clear heat, throat, thirst is a good fruit.