Psoriasis is a chronic, relapsing, inflammatory disease with a genetic predisposition that can involve multiple systems. From the patient’s perspective, psoriasis seriously affects image and quality of life and has been compared to a chronic cancer that cannot be cured. At present, the number of psoriasis patients worldwide has reached 125 million, while the number of psoriasis patients in China is about 8 million. There are many factors that trigger psoriasis, but an important factor is the change of seasons, and the disease tends to aggravate in autumn and winter, while it will reduce in summer. Now it is in the autumn and winter season, the weather is cold and dry, the more such season is unfavorable to the condition of psoriasis patients, because psoriasis patients are afraid of lack of water, and the dry winter climate makes psoriasis easy to relapse. 1, improve immunity and prevent various infections Autumn and winter is not only a high season for psoriasis, but also a time when illnesses such as colds are likely to occur. Bacterial or viral infections such as colds, fever and tonsillitis can aggravate or induce psoriasis. When the weather becomes cold in winter, the human body is more prone to corresponding respiratory diseases due to the low immunity, so it is necessary to actively prevent and try to avoid the occurrence of cold and other symptoms. Patients with psoriasis can appropriately increase exercise to promote blood circulation and enhance cardiopulmonary function, so that the respiratory system can also get beneficial exercise. And into the season of high prevalence of influenza, psoriasis treatment patients can also be injected flu vaccine to protect the health of the body. 2, keep emotional optimism, avoid mental tension Mental factors are also a very important aspect of the psoriasis condition, lifting the mind concerns, establish confidence to overcome the disease has an important impact on the prevention of psoriasis occurrence, development. In the cold winter, people’s emotions are also prone to problems. This is due to the significant reduction in sunlight hours in winter, the brain pineal melatonin secretion began to increase, while causing thyroxine and adrenaline secretion levels to decline, thus making people feel low mood, mental discomfort and lazy. Psoriasis seasonal affective disorder usually has a tendency to gradually worsen the symptoms of depression with age and prolongation of the course of the disease. This requires psoriasis to learn to self-emotional regulation, more sunshine and so on to help depressed mood relief. 3, to prevent dry or broken skin The skin is a very sensitive organ of the human body, especially at the lesions of psoriasis. In the cold winter, psoriasis skin blood vessels are often in a contracted state, the secretion of sweat and sebaceous glands is obviously reduced, and many will appear itching, redness and swelling of the skin, and in serious cases, irregular cracking and peeling, such phenomenon is most obvious in the lower limbs. This requires psoriasis patients to do a good job of skin care work, pay attention to the rules and frequency of bathing. The number of baths should not be too frequent, once a day is enough, the water temperature should not be too high, and do not repeatedly scratch, and it is best not to use soap or body wash, try to use a bath containing moisturizing ingredients, after the bath should be applied moisturizing cream containing moisturizing ingredients to reduce the loss of skin moisture.