Inclusion Criteria:  Age ≥ 18 years old. Confirmed diagnosis of psoriasis. Duration of psoriasis ≥ 3 years. Must be able to read and understand the questionnaire. Receive a full explanation of the purpose and content of the trial before the study begins, and voluntarily sign a written consent form.  Exclusion Criteria:  Unable to read or understand the questionnaire. Other conditions deemed by the investigator to be inappropriate for this study.