Inclusion Criteria:  Patient aged 18 or over Had been informed about the objectives and progress of the research, and not opposed to the collection of his data Consulting or hospitalized in one of the departments participating in the study : For a cutaneous psoriasis (clinical diagnosis)  And at least one of the two criteria below must be met :  In whom a systemic treatment is initiated (excluding phototherapy or acitretin) that he has never received in the past * (a patient who has already received a biomedicine (princeps and / or biosimilar (s)) in the past cannot be included under the same biomedicine (princeps and / or biosimilar (s)). Patients initiating treatment with methotrexate or ciclosporin must be naïve of any biomedicine. Patients included in the PSOBIOTEQ 1 cohort  Exclusion Criteria:  Patient for whom cutaneous psoriasis is not the main reason for systemic treatment (psoriatic arthritis, or concomitant Crohn's disease, etc.); Patient unable to comply with the registry's follow-up procedures (not reachable by phone, unable to complete the self-questionnaire) or whose monitoring is deemed difficult; Patient for whom the treatment administered at inclusion cannot be identified (patient included in a randomized double-blind biomedicine research protocol, for example). Patient under guardianship or curatorship