Many dermatology books cite infection as an important trigger for psoriasis. Among the infections, upper respiratory tract infections such as cold, tonsillitis and laryngitis are the most common, and these diseases are commonly known as “cold”, which makes “cold easily triggers psoriasis” a consensus among many doctors and patients. The author has analyzed a large number of cases from the perspective of Chinese medicine etiology and found that this is a misconception. What triggers psoriasis is not the “cold” itself, but the mismanagement of such diseases. In Chinese medicine, upper respiratory tract infections belong to the category of external influenza, and treatment should be carried out by relieving the surface to make them “sweat out and be relieved”, which is the meaning of “good treatment is to treat the skin and hair” in Nei Jing. However, in the current clinical practice, the main purpose of using western medicine to reduce inflammation and Chinese medicine to clear heat and detoxify the body is to alleviate the symptoms as soon as possible, which is a quick effect regardless of the long-term effect. The symptoms of the cold are relieved, but the result is that the “heat” evil is congested in the blood. If the Blood heat is congested for a long time, it tends to spontaneously spread out, leading to the occurrence of acute drip psoriasis. This is the truth that “cold can easily induce psoriasis”, in fact, it is a cold mis-treatment that induces psoriasis. ”This is the truth that psoriasis is easily triggered by the cold. (Psoriasis Traditional Chinese Medicine) The core of this treatment is to “give the evil a way out” and to disperse as the main method, which is correct, but the use of medicine stopping at pungent and cool is not comprehensive. For this type of psoriasis, if the cause of the disease is found to be wind-cold and depressed, the use of pungent and warm dispersion will receive good therapeutic effects. For example, Feng, a 23-year-old male, was first diagnosed on November 1, 2010. The reason for his illness was “I had a cold and tonsillitis a month ago. The clinic told him to take azithromycin, amoxicillin and cold medicine, and he recovered from the sore throat and cold. After a week, small red spots appeared on the back with skin flakes, and in about 3 days the whole body was covered with red spots. This is the initial course of a typical case of acute progressive punctate psoriasis, which started 20 days ago and was untreated and sought consultation from the author. The rash was untreated for 20 days, and the author was consulted. The red scaly skin lesions, ranging from rice grains to green beans, were all over the body, with obvious itching. The torso sweats little, the hands and feet sweat a lot, easy to sweat when drinking thin gruel. The treatment is Ephedra with sesame seeds and fine spice soup with reduction. The prescription is: Ephedra with 9 grams, sesame seeds with 9, fine spice with 3 grams, ginger with 14 slices and jujube with 12 pieces. Decoction once, about 150 minutes, take 400ml of liquid, divided into warm and then take 1 dose a day. After taking the medicine, drink hot thin porridge, hope to get a slight sweat all over the body, sweat out then heat evil out, the rash will disappear since. 3 days later, re-examination, sweating becomes more, the skin flakes reduce, itching several no, the above effect is good, spicy warm hair dispersal method is unchanged, refer to ephedra plus art soup, coix seeds septicum, Ling Gui Zhu Gan Tang method plus reduction, followed by more than 10 doses of soup medicine. On December 2, 2010, the patient’s tongue fatness was reduced, the skin lesions were absent, and the sweating was uniform, so he was advised to stop taking the medicine and continue to pay attention to the sweating. ”Cold” is a small daily disease, but improper treatment can trigger psoriasis. If psoriasis is treated properly, it can be expected to heal quickly, while the continued use of cold medicine “to suppress the evil qi” will lead to the extension and recurrence of the disease, creating the illusion that “psoriasis is prone to recurrence”. Whether facing the “cold” or psoriasis, doctors and patients should not simply suppress the symptoms, but should remember the principle of “treatment must be sought at the root” and “those in the skin sweat and send out”. Do not repeat the same mistakes. Infections account for a large proportion of the triggering factors for psoriasis, and infections such as colds, tonsillitis, laryngitis and other upper respiratory tract diseases are the most common. These diseases are collectively referred to as “colds”, which makes “colds easily induce psoriasis” a consensus among many medical practitioners. The author has analyzed a large number of cases with Chinese medicine thinking and found that what triggers psoriasis is the “cold” mis-treatment, not itself.