The primary objective of the Corrona Psoriasis Registry is to study the comparative safety of approved psoriasis therapies in a North American cohort of psoriasis subjects treated by dermatologists. This includes assessing the incidence and nature of adverse events of special interest, including malignancy, in a real world population of psoriasis patients on new biologic therapies (e.g. secukinumab). Secondary objectives include analyzing the epidemiology and natural history of the disease, comorbidities, current treatment practices, and comparative effectiveness.