Isthmus herpes generally refers to herpes pharyngitis, is a special type of upper respiratory tract infection, mostly caused by infection with coxsackievirus type A, enterovirus 71, the patient’s main symptoms are categorized into systemic symptoms, local symptoms. 1. Systemic symptoms: herpes pharyngitis has a rapid onset, often sudden onset of fever, mostly low or moderate fever, some patients will have a high fever, the condition is more serious, the fever can be as high as 40 ℃ or more, usually lasts for 2 ~ 4 days, some patients will also have convulsions. 2. Local symptoms: patients early pharynx will appear congestion, with the development of the disease, the patient’s pharyngeal isthmus part of the mucous membrane will appear gray-white herpes, herpes will also appear around the redness and swelling, herpes can also form ulcers after breaking. 3. Other: some patients may also have diarrhea, cough, vomiting, anorexia, runny nose and other symptoms. If you have the above symptoms, you should go to the hospital in time for a systematic examination to make a clear diagnosis, and then follow the doctor’s instructions to standardize the use of medication and treatment.