Psoriasis, also known as psoriasis, has no cure. Generally, you can control the condition and reduce the number of relapses by using medication, physical therapy, photosensitizer treatment and other methods. 1. Drug treatment: you can use emollients, calcium-modulated neural phosphatase inhibitors, glucocorticoid creams, vitamin D3 derivatives, etc., such as tacrolimus ointment, halomethasone ointment, carbotriol, etc., externally under the guidance of a doctor. Immunosuppressants such as methotrexate and cyclosporine can be used when the infection is obvious or generalized. 2. Physical therapy: This treatment uses ultraviolet light to slow down the rapid growth of skin cells and inhibit the activation of immune cells, including long-wave ultraviolet light (UVA) phototherapy or medium-wave ultraviolet light (UVB) phototherapy. 3. Photosensitizer treatment: Psoriasis patients can use photosensitizers for systemic and topical treatment. Doctors need to take into account the patient’s age, gender, location of lesions and body weight to set the dosage of medication. 4. Biologics: Biologics are an important treatment option for patients with moderate to severe plaque psoriasis. Biologic drugs include etanercept, infliximab, adalimumab, ustekinumab, and skuticilumab. If psoriasis is diagnosed, treatment should be standardized under the guidance of a physician.