Psoriasis is also known as “psoriasis”. Psoriasis is an immune-mediated, chronic, relapsing, inflammatory, systemic disease caused by a combination of genetic and environmental factors. With effective treatment, psoriasis can subside in about 6 months. How long it takes for psoriasis to subside depends on a number of factors, including the specific cause of the disease, the treatment method, and daily care. 1. Specific causes: Psoriasis is based on genetic susceptibility and is affected by the environment, resulting in the onset or fluctuation of the disease. Patients should combine with their own situation to identify and avoid the causes or susceptibility factors in time, such as upper respiratory tract infections, fatigue, mental stress and so on. 2. Treatment: If the skin damage of psoriasis is less than 3% of the body surface area, it can be treated with external medication (mometasone cream, vitamin A acid cream, etc.); if the condition is serious and the area of skin lesions is large, it is necessary to combine the treatment with physical therapy (e.g., ultraviolet ray irradiation, excimer laser, etc.) or oral medication (immunosuppressant agents such as methotrexate, biological agents such as adalimumab, etc.). 3. Daily care: patients should try to avoid psychological factors such as tension, impatience, fear, etc.; add clothes in time according to the weather changes in autumn and winter seasons to prevent colds, pharyngitis, tonsillitis, and usually live a regular life, combine work and rest and insist on exercising and increasing nutrition appropriately. Generally speaking, psoriasis subsides in about 6 months after effective treatment. It is recommended that patients strictly follow the doctor’s instructions to receive treatment, use medication under the guidance of the doctor, and do regular reviews, so that the doctor can keep track of the condition and help patients get well soon.