Herpes simplex usually occurs at the junction of the mucous membrane of the mouth and lips, mainly manifesting as erythema and blisters in the mouth and lips. The inflammatory reaction is generally mild and can be cured after about 1 week or 10 days with little scarring. In the case of herpes zoster, which occurs on one side of the head and face, there are obvious erythema and clusters of blisters, and the patient will have pain. The risk of scarring depends on the degree of inflammatory reaction of the skin. If the inflammatory reaction is heavy with visible blisters and large blisters, the chances of scarring will be high with the formation of vesicles and ulcers, or the formation of bacterial infection with skin vesicles will also increase the risk of scarring. So herpes zoster should be actively treated with antiviral and nerve nourishing therapy, and topical antibacterial drugs should be applied to avoid local skin infections and reduce the risk of scarring.