TY - CHAP M1 - Book, Section TI - Psoriatic Arthritis A1 - Kasper, Dennis L. A1 - Fauci, Anthony S. A1 - Hauser, Stephen L. A1 - Longo, Dan L. A1 - Jameson, J. Larry A1 - Loscalzo, Joseph Y1 - 2016 N1 - T2 - Harrison's Manual of Medicine, 19e AB - Psoriatic arthritis is a chronic inflammatory arthritis that affects 5–42% of persons with psoriasis. Some pts, especially those with spondylitis, will carry the HLA-B27 histocompatibility antigen. Onset of psoriasis usually precedes development of joint disease; approximately 15–20% of pts develop arthritis prior to onset of skin disease. Nail changes are seen in 90% of pts with psoriatic arthritis. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/10/07 UR - accessmedicine.mhmedical.com/content.aspx?aid=1128787428 ER -