This comprehensive visual reference contains over 150 images from a wide gamut of variations of the disease, as well as charts and tables detailing the most up-to-date information on patient susceptibility, incidence, and symptoms, providing the clinical presentation of the disease, as well as radiographic, ultrasound, and MRI images to highlight the role of imaging in psoriatic arthritis. Although several proposed methods for classifying PsA have been published, none has been widely accepted or validated. This book proposes the use of an amended version of the Moll and Wright method, and functions mostly as a visual reference and data source of the most up-to-date findings and comprehensive images of PsA. The book includes sections on juvenile psoriatic arthritis which aid practitioners in distinguishing the characteristics and features of the disease in children, as well as discussions of clinical drug trials. The book will be of particular interest to rheumatologists, dermatologists, and family practitioners.