Herpes pharyngitis fever usually lasts for 2 to 4 days, but the exact time varies depending on the severity of the disease and other factors, and cannot be generalized. Herpes pharyngitis is usually due to acute contagious pharyngitis caused by coxsackie virus infection, in the acute attack, there will be fever, you can take ice packs, warm baths and other physical methods to lower the temperature, the body temperature is more than 38.5 degrees, you can take oral acetaminophen, ibuprofen and other medications to treat. The fever will usually go down in about 2 to 4 days. For patients with more serious conditions or poorer health, the recovery time may be longer, so the exact time varies depending on a variety of factors such as individual health, severity of the disease, and the effectiveness of the treatment. Patients are advised to consult a doctor once herpes pharyngitis occurs.