Herpes on the arm is commonly seen as shingles, which can be improved by general treatment, medication and physical therapy. 1. General treatment: pay attention to skin care, avoid friction stimulation or scratching with hands to avoid skin breakage. 2. Drug treatment: Oral antiviral drugs such as acyclovir and valacyclovir can be taken as prescribed by the doctor. If the disease causes pain, non-steroidal anti-inflammatory drugs such as ibuprofen and acetaminophen can be used. Herpes unbroken can be treated with acyclovir ointment, glycerite lotion; after the rupture, 3% boric acid solution, 1:5000 furacilin solution can be used as appropriate. 3. Physiotherapy: In order to promote the healing of herpes on the arm and relieve pain, you can also seek medical treatment through the spectrum therapeutic instrument, infrared radiation and other ways of treatment. It is recommended that people with herpes on the arm use medication under the guidance of a doctor, and should not use medication indiscriminately on their own.