Educational advancement in the field of psoriatic arthritis which this book will provide is consistent with GRAPPAs aims and objectives leading to a productive synergy. GRAPPA (Group for Research and Assessment of Psoriasis and Psoriatic Arthritis), is recognized world wide as the leading international society for the study and promotion of awareness of psoriatic arthritis. GRAPPA is an association of leading rheumatologists, dermatologists, representatives of patient service leagues and other stakeholders focused on psoriasis and PsA.Psoriatic Arthritis (PsA) ranks with rheumatoid arthritis and axial spondyloarthritis as one of the most prevalent inflammatory arthropathies worldwide. There is now a significant global awareness among Rheumatologists, Dermatologists, Internal Medicine Specialists, Gastroenterologists, General Practitioners, Family Practitioners, Physiotherapists, Nurse Specialists, Immunogenetics and many other Health Care Professionals with regards to the importance of psoriatic arthritis.

Section 1. Historical Aspects.- 1. Historical Perspectives on Psoriatic Arthritis.- 2. GRAPPA Historical Perspective.- Section 2. Epidemiological Aspects.- 3. Classification Criteria for Psoriasis and Psoriatic Arthritis.- 4. Epidemiology of Psoriasis and Psoriatic Arthritis.- 5. The Natural History of Psoriatic Arthritis.- Section 3. Pathological and Genetic Aspects.- 6. Immunopathogenesis of Psoriasis Skin and Nail.- 7. Immunopathology of the Psoriatic Arthritis Musculoskeletal Lesions.- 8. Innate and Acquired Cellular Immune Responses in Psoriasis and Psoriatic Arthritis.- 9. Cytokine Pathways in Psoriasis and Psoriatic Arthritis.- 10. Genetics of Psoriasis.- 11. Update on the Genetics of Psoriatic Arthritis.- 12. Animal Models of Psoriasis and PSoriatic Arthritis.- 13. Mechanisms of Bone Remodelling in Psoriatic Arthritis.- Section 4. Clinical Aspects.- 14. Psoriasis.- 15. Scalp Psoriasis: Clinical Features and Assessment.- 16. Nail Psoriasis: Clinical Features and Assessment.- 17.Psoriatic Arthritis.- Section 5. Imaging.- 18. Imaging Tools in Skin and Nail Psoriasis.- 19. Radiographic Assessment of Psoriatic Arthritis (PsA).- 20. Psoriasis and Psoriatic Arthritis: Ultrasound Applications.- 21. Magnetic Resonance Imaging in Psoriatic Arthritis.- 22. Future Trends in Imaging Modalities for Psoriasis and Psoriatic Arthritis.- Section 6. Laboratory Tests.- 23. Relevant Laboratory Tests and Therapeutic Monitoring in Psoriasis.- 24. Laboratory Tests for Psoriatic Arthritis. Section 7. Management Aspects.- 25. Paradigms of Treatment in PsA.- 26. Topical and Systemic Therapies for Moderate-to-severe Psoriasis.-27. Oral Non-Biologic Therapies and Non-Pharmacological Therapies in PsA.- 28. Biologic Therapy for Psoriasis.- 29. Biologic Therapy of Psoriatic Arthritis.