Psoriasis, also known as psoriasis, is a recurrent chronic erythematous scaly skin disease, mainly a polygenic genetic disease caused by the interaction of genetic and environmental factors, etc. It is currently believed that psoriasis is an immune and inflammation-mediated disease, and no infectious pathogens clearly related to psoriasis have been found to exist, so psoriasis is not contagious. The causes or causative factors of psoriasis may include: 1, genetic factors: domestic reports about 20-30% of psoriasis patients have a family history; 2, abnormal immune function 3, infection factors, especially drippy psoriasis is most closely related to infection 4, neuropsychiatric factors, such as tension, anxiety, etc. 5, habits and environmental factors, such as drinking, smoking, cold stimulation, moisture, etc. What things do psoriasis patients need to pay attention to in their lives? 1, diet: generally need to eat less greasy food, avoid eating alcohol, spicy and stimulating food (such as chili, etc.). There are some differences between Chinese medicine and Western medicine on the issue of psoriasis diet. From the perspective of Chinese medicine, most patients with psoriasis belong to the blood dryness and blood heat type, and it is generally recommended to eat less or not to eat seafood, beef and mutton and other so-called hairy things. Western medicine says that psoriasis patients lose a lot of protein by shedding a large number of scales, it is appropriate to take in more rich protein (soybean products, dairy products, etc.), it is generally recommended that the diet should be reasonable, comprehensive and balanced to provide the necessary nutrients, eat more fresh vegetables and fruits, psoriasis patients’ dietary contraindications are different from person to person, according to individual circumstances, if the condition is not aggravated after eating foods such as beef and mutton, there is no need to abstain from eating. 2, cleaning: psoriasis patients should be moderate bathing, not excessive hot water scalding, avoid scrubbing hard, you can use warm water, with some mild moisturizing body wash moderate cleaning. If the patient’s situation allows, you can take more baths, hot spring baths, etc., because after frequent baths, the patient’s scales are reduced, so that the water content of the skin increases, which is beneficial to the absorption of topical drugs and better play the effect of drugs.