Psoriasis is a common kind of erythroderma desquamation relative with allergic reaction and tonsillitis. This disease is clinically classified into four types: the common type, the articular type, the pus-pocket type and the erythroderma type. The common type is the majority; its skin eruptions may appear on any part of the body, but most likely on the scalp, the outer side of the limbs and the lumboscaral portion. At first the skin eruption is in the form of red papular eruption or maculopapule and the size of grain of rice or soybean. It gradually grows bigger and merges into the one another covering an area with an extinct edge which may appear in the form of dots, covered with a multi-layer of scales like pine bark. The onset is acute in most cases, ant the course is a protracted one, liable to relapse. It is a clearly seasonal disease, attacking the patients or becoming more severe in summer. However, this seasonal change is not so obvious among protracted cases. The patient feels itching to varying degrees.

Chemical Medicine including Immunosuppressor and steroid for treatment of Psoriasis all have severe side effect such as anaemia, double infection, hair loss etc.

Chinese Herbal Medicine are save and effective. In TCM works, this disease is caused by the invasion of pathogenic wind into the skin, where it stays and later turns into the heat, thus causing heat in the blood, dryness in the blood, or blood stasis. It may also be caused by deficiency of both Liver-Yin and kidney-Yin or the disharmony between the Chong and Ren channels, the Ying-Qi and blood or the Yin and Yang in the Zang Fu organs as well. Chinese Herbal Medicine can detox inside and cooling blood. Psoriasis can be completely cured after enough courses and follow doctor’s suggestion.