Herpes zoster is a skin disease caused by the herpes zoster virus infection and is characterized in its early stages by dense small blisters distributed along a unilateral peripheral nerve, accompanied by significant neuralgia. Herpes initially appears as irregular or oval erythematous patches of skin on both the face and trunk, and a few hours later blisters are found on the erythematous patches, which gradually fuse, increase in size, and merge into large blisters or, in severe cases, blood blisters. If secondary infection occurs, pustules are formed, and the blister pulp can be absorbed after a few days, and finally scabs are formed. 1-2 weeks later, the pigment left by the scabs can also gradually fade. Generally, there is no obvious rupture, no scarring of the infection, and the damage is not more than the midline, and most of the disease can gradually heal itself within 2-4 weeks.