This is a multicentre, observational, descriptive estimate of the proportion of participants with psoriatic arthritis among psoriasis participants attending dermatology clinics selected for this study. In addition, this study will involve full psychometric assessment of the Early psoriatic screening questionnaire (EARP) questionnaire with the aim of identifying and appropriately referring participants to a rheumatologist for review if their EARP score is 3 or greater at Screening (i.e. \>= 3 at Visit 1).
