Chickenpox on adults is caused by varicella-zoster virus infection. There is no fastest treatment for chickenpox, mainly symptomatic treatment, antiviral treatment and so on. 1. Symptomatic treatment: chickenpox is a highly contagious disease, mainly with fever, the whole body appears red spots, papules, blisters, scabs, with itching. If the itching is obvious and the blisters are not ruptured, topical glycerine lotion, oral benadryl, loratadine, etc. can be used to relieve the itching. If accompanied by bacterial infection, anti-infection treatment such as penicillin or cephalosporin can be given. It is recommended to pay attention to the change of body temperature, if fever occurs, physical cooling, oral acetaminophen, ibuprofen, etc., can be used to assist cooling treatment. 2. Antiviral treatment: chickenpox is an infectious disease caused by varicella-zoster virus infection. Antiviral drugs such as acyclovir and valacyclovir can be given to inhibit the synthesis of the virus, achieve the effect of antiviral and shorten the course of the disease. Chickenpox is a self-limiting disease, most patients can be cured within two weeks. If the symptoms are obvious, it is recommended to go to the dermatology department of the hospital for consultation and treatment under the guidance of the doctor, so as to avoid causing encephalitis, pneumonia and other related complications, which will jeopardize your health.