Psoriasis can be treated by adding and subtracting formulas such as Rhinoceros Horn Dihuang Tang, Tao Hong Si Wu Tang, and Qing Di Zhu Wei Poetry Drink, depending on the type of evidence. Psoriasis is a chronic, recurring, inflammatory skin disease, which is referred to as leukoderma in traditional Chinese medicine. It mainly manifests itself in papules, erythema, and scaly damages, and can be categorized into blood-heat-embedded syndrome, qi and blood stagnation syndrome, and fire-toxicity incandescent syndrome, and so on. 1. Blood-heat internal impregnation certificate, the symptoms of the rash is mostly in the form of dots and drops, rapid development, bright red color, layers of silver flakes, intense itching, scratching a little bit of bleeding, accompanied by dry mouth and tongue, sore throat, upset and irritable, dry stools, yellow and red urine, etc., the treatment is to cool the blood and clear the heat, eliminating the spots and removing the toxins, and the treatment can be used in the rhinoceros horn dixiehuangtang and other formulas with additions and subtractions. 2. Qi and blood stagnation syndrome, the symptoms of repeated lesions do not heal, the rash is plaque-like, thick scales, dark red color, purple tongue, petechiae or ecchymosis, etc., the treatment is to detoxify and clear the channels, eliminate blood stasis and activate blood circulation, can be used in Tao Hong Si Wu Tang and other formulas to add and subtract treatment. 3. Fire-poison incandescence syndrome, the symptoms of the whole body skin redness, swelling, burning itching, a lot of peeling, or dense small pustules, accompanied by strong heat, thirst, headache, etc., the treatment is to diarrhea and clear away heat, detoxification and cooling of the blood, can be used to clear the pestilence of toxicity drink and other formulas plus or minus treatment. In addition, there are other symptoms such as blood deficiency and wind dryness, dampness and toxicity accumulation, wind-cold and dampness paralysis, etc., and the clinical manifestations are also different, so if you need to use medication, please go to the hospital, and choose the appropriate treatment under the guidance of the doctor.