Herpes zoster is a viral skin disease caused by the varicella-zoster virus, and is diagnosed by the following: 1. history: there is a history of respiratory tract infection before the onset of the disease, and the patient appears tired, poorly rested, and stimulated by neurological and psychiatric factors, with peripheral weakness and tiredness. 2. signs: erythematous papules and clusters of blisters can be seen on the skin, in a unilateral or band-like distribution, and painful. The patient’s daily life and work are affected by the pain. 3. examination: routine blood tests in the dermatology office can reveal an increase in mononuclear cells, while scrapings of the herpes base can detect viral inclusions. 4. identification: exclude some internal diseases, such as herpes zoster in the chest needs to be differentiated from intercostal neuralgia. For example, herpes zoster in the chest should be differentiated from intercostal neuralgia, which can be diagnosed by a specialist orthopedic surgeon. The diagnosis of herpes zoster can be confirmed after the above mentioned diagnosis, but it is necessary to go to a qualified medical institution to confirm the diagnosis.