Pharyngitis is usually caused by bacterial, viral and other pathogenic microorganisms infections, including herpes pharyngitis, fanshuang pharyngitis and other types of pharyngitis, often manifested as sore throat, chills and other symptoms. 1. Herpetic pharyngitis: the disease has an incubation period, the incubation time is usually 2~4 days, there may be a sudden onset of fever, sore throat, nausea and other symptoms, and convulsions may occur when there is a high fever. 2. Fanshuang pharyngitis: the disease may present local symptoms such as unilateral tonsillar pain, sore throat, bad breath, difficulty in swallowing, etc.; it may also present systemic symptoms such as headache, chills, and loss of appetite. Pharyngitis may also present complications such as encephalitis, aseptic meningitis, and acute flaccid paralysis.