TY - CHAP M1 - Book, Section TI - Inflammatory Bowel Disease–Associated Spondyloarthritis A1 - Manno, Rebecca L. A1 - Yazdany, Jinoos A1 - Tarrant, Teresa K. A1 - Kwan, Mildred A2 - Papadakis, Maxine A. A2 - McPhee, Stephen J. A2 - Rabow, Michael W. A2 - McQuaid, Kenneth R. Y1 - 2023 N1 - T2 - Current Medical Diagnosis & Treatment 2023 AB - One-fifth of patients with IBD have arthritis, which complicates Crohn disease somewhat more frequently than it does ulcerative colitis. In both diseases, two distinct forms of arthritis occur. The first is peripheral arthritis—usually a nondeforming asymmetric oligoarthritis of large joints—in which the activity of the joint disease parallels that of the bowel disease. The arthritis usually begins months to years after the bowel disease, but occasionally the joint symptoms develop earlier and may be prominent enough to cause the patient to overlook intestinal symptoms. The second form of arthritis is a spondylitis that is indistinguishable by symptoms or radiographs from ankylosing spondylitis and follows a course independent of the bowel disease. About 50% of these patients are HLA-B27 positive. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/25 UR - accessmedicine.mhmedical.com/content.aspx?aid=1193125968 ER -