Dan Gua is a Chinese medical term that corresponds to the Western medical name for the disease scarlet fever, which is a nationally recognized infectious disease. The symptoms that appear are mainly characterized by large, diffuse erythema all over the body, accompanied by a pale ring around the mouth. This disease is a bacterial infection of the infectious skin disease, in the treatment is mainly anti-infective. Most of the treatment is preferred to penicillin treatment, if the patient is allergic to penicillin, can use roxithromycin treatment, can also use cross-sampling or use cephalosporins. At the same time, appropriate use of proprietary Chinese medicine, such as Pu Di Lan Oral Liquid, or Blue Scutellaria Oral Liquid. For the state of skin lesions, you can appropriately use furnace glycolic lotion, or use anti-itch type of topical medication, such as dermatologic ointment, etc.