Treatment principles of psoriasis: control the disease, slow down the development, reduce symptoms, and reduce recurrence. I. Topical drug treatment 1. emollient preparations 2. keratinizing agents 3. keratolytic agents 4. glucocorticoids 5. vitamin A acids 6. vitamin D3 derivatives 7. dithranol 8. tarry 9. cytotoxic drugs 10. others, such as: camptothecin II. physical therapy 1. long-wave ultraviolet UVA 2. photochemotherapy PUVA 3. broad-spectrum UVB 4. narrow-spectrum UVB III. systemic therapy 1. Anti-infective drugs (antibiotics) 2, immunosuppressants 3, retinoids 4, vitamins 5, glucocorticoids 6, biological agents 7, Chinese medicine 4, other treatment 1, psychotherapy 2, prevention of causative factors —— avoid colds, regular life, not addicted to alcohol and tobacco. Note: There is no good way to cure for the time being, do not take drugs indiscriminately, beware of being fooled.