The most common diseases that cause herpes on the face are herpes simplex in the facial area and herpes zoster in the facial area. Herpes simplex in the facial area is caused by human herpes simplex virus infection, which often involves the junction of the skin and mucous membranes, and the disease is contagious. Herpes zoster in the facial area is contagious because it is caused by the varicella zoster virus infection and can be passed on to children who have not had chickenpox. Herpes zoster often involves one side of the nerves, and facial paralysis can occur when it occurs in the facial area, so it needs to be treated aggressively. Both herpes simplex and herpes zoster can be treated with antiviral therapy, such as oral vasiclovir hydrochloride tablets or famciclovir hydrochloride tablets.