Serpentine sores often refer to herpes zoster, which usually takes 2~4 weeks to subside. It is recommended to seek early and active treatment, and use antiviral drugs such as acyclovir as prescribed by the doctor in order to shorten the course of the disease and minimize the after-effects. Herpes zoster is caused by varicella-zoster virus, the course of the disease is generally 2~3 weeks, often 3~4 weeks for the elderly. With the development of the disease, the blisters dry up, after the scabs fall off, there can be temporary reddish spots or hyperpigmentation. Although herpes zoster is self-limiting, standardized treatment can help reduce nerve pain and shorten the duration of the disease. Antiviral drugs such as acyclovir are commonly used. During the course of the disease, attention should be paid to rest, avoid scratching the affected area. It is recommended to consult a doctor in time for diagnosis and treatment. The use of specific drugs should be under the guidance of a doctor.