The common causes of throat inflammation are: a. Infection: often occurs after a cold, first as a viral infection, followed by a bacterial infection. At the beginning of the nasal cavity, the nasopharynx is mostly cicatricial inflammation, if the infection expands downward, it can cause acute cicatricial inflammation of the mucous membrane of the throat. The second, excessive use of voice: excessive use of voice can also cause acute laryngitis, such as talking too much, shouting, violent coughing, etc. Third, other: inhalation of harmful gases, dust or excessive smoking and drinking, etc. In young children, acute pharyngitis is often the precursor or accompanying symptom of acute infectious diseases, such as measles, scarlet fever, influenza, rubella, etc. In adults and older children, it is often followed by acute rhinitis. Cold, fatigue, excessive smoking and drinking, and decreased systemic resistance are all triggers of this disease.