TY - CHAP M1 - Book, Section TI - Psoriatic Arthritis A1 - Husni, M. Elaine A2 - Stone, John H. Y1 - 2021 N1 - T2 - Current Diagnosis & Treatment: Rheumatology, 4e AB - Psoriatic arthritis (PsA) is a chronic, immune-mediated disease that affects both the skin and joints.Clinical manifestations are diverse; however, hallmark features include asymmetric inflammatory arthritis, skin and nail psoriasis, enthesitis, and dactylitis.About one-third of patients with psoriasis will develop PsA.Patients with PsA are seronegative, lacking both rheumatoid factor and anti-CCP antibody.Radiographic findings of erosions, periosteal reaction, ankyloses, and juxta-articular new bone formation can occur. SN - PB - McGraw Hill CY - New York, NY Y2 - 2024/04/18 UR - accessmedicine.mhmedical.com/content.aspx?aid=1180196287 ER -