Herpes zoster is caused by the varicella-zoster virus and occurs in spring and autumn, mostly in adults, and is typically characterized by clusters of small blisters along the peripheral nerves, often accompanied by significant pain. The herpes zoster virus is weak against the external environment, and the human is the only host. It enters the bloodstream through the respiratory mucosa to form viremia, and chickenpox or occult infection occurs. The infection occurs when the body is weakened by trauma, fatigue, illness, malignancy and other factors that lower the body’s resistance. The disease usually does not recur after healing. Typical symptoms Before the onset of the disease, there may be malaise, low-grade fever and other systemic symptoms. The skin of the affected area may feel burning pain, appear flushed spots, and soon form small blisters, densely distributed, mostly on one side of the torso, not exceeding the midline of the body, often accompanied by severe pain. Some people can develop postherpetic neuralgia in the eyes and ears or when the treatment is not standardized. Prevention People infected with varicella-zoster can be made to reactivate the virus in response to various triggering stimuli, producing the characteristic segmental blistering rash on the skin. Therefore, people at risk should avoid trauma, take rest, exercise, and improve their physical fitness. Health education and behavioral guidance Young children should be vaccinated against varicella in a timely manner; people with low immunity should actively look for the cause and change the state of low body resistance; timely and standardized treatment should be given after the disease, especially for the elderly, to avoid postherpetic neuralgia, and to take good care of the disease and prevent complications.