Psoriasis is one of the more difficult clinical skin diseases, and the commonly used treatment methods for psoriasis are oral Chinese medicine, oral Western medicine or topical Chinese and Western medicine creams or narrow-wave UVB phototherapy, etc. How can patients judge the efficacy soon after treatment? Skin lightening and lesion thinning are two key points of judgment. 1, the lesions become lighter: the original red lesions, now become light red, is a phenomenon of improvement, the original light red lesions, now become white, is also a phenomenon of improvement. On the contrary, if the lesions become more and more red after treatment, it is a sign of aggravation, and when the redness reaches a certain level, new lesions will appear. The redness of psoriasis skin lesions is considered by Chinese medicine to be related to the heat toxicity of the blood, and the heat toxicity accumulates to a certain degree naturally like a volcano with new lesions bursting out. If psoriasis patients feel that the skin lesions become shallow and then a little dry and flaky after treatment, it is actually a sign of improvement. The red spots of the original psoriasis lesions are generally raised, and the raised feeling will subside after medication, and the keratin layer above will naturally fall off, which is clinically manifested as skin flaking. As treatment continues, the lesions continue to recede downward and the psoriasis plaques become thinner and thinner. A large psoriasis plaque lesion is like a large island, after treatment, the large island will gradually fade to invisible. On the contrary, if the lesion becomes thicker and thicker after treatment, and the scales become more and more greasy, it is a manifestation of more blood heat toxicity and dampness, and if the treatment plan is not adjusted in time, the lesion will become heavier and heavier, and new lesions will appear soon.