Acute pharyngitis is an acute inflammation of the pharyngeal mucosa and submucosal tissues, mostly involving the lymphatic tissue of the pharynx, and can develop alone or secondary to acute rhinitis and acute tonsillitis. The main symptoms are dryness, burning and pain in the throat. It is common in autumn and winter, and in the alternation of winter and spring. The main causes are as follows: 1. Viral infections: common viruses include coxsackievirus, adenovirus, parainfluenza virus, followed by rhinovirus or influenza virus, etc., which are transmitted through droplets or close contact, and can also be caused by acute rhinitis, acute tonsillitis, etc. 2, bacterial infection: can be caused by streptococcus, staphylococcus and streptococcus pneumoniae and other bacterial infections. Among them, group A type B streptococcal infection is the most serious and can lead to septic lesions in distant organs, called acute septic pharyngitis. 3, environmental factors: such as dryness, dust, smoke, irritating gases, etc. can also cause acute pharyngitis. Acute pharyngitis is generally more acute, patients can first appear dry, burning, rough feeling in the pharynx, followed by obvious sore throat, swallowing aggravated, some patients pain can be radiated to the ear. In severe cases, it can cause otitis media, sinusitis and acute inflammation of the respiratory tract. If the above symptoms occur, it is recommended to consult a doctor promptly.