Herpes zoster is an infectious disease caused by infection with the varicella-zoster virus. Herpes zoster develops when the virus is reactivated after a long period of latency in the body. Chickenpox and herpes zoster are two different diseases caused by the same virus, which is mainly manifested as chickenpox in childhood and adolescence. Herpes zoster is mainly characterized by hepatophilic and neuropathic pain, and most patients have a good prognosis if treated promptly.