RT Journal Article SR Electronic T1 On Defining Musculoskeletal Inflammation: A Report from the GRAPPA 2011 Annual Meeting JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 2214 OP 2215 DO 10.3899/jrheum.120827 VO 39 IS 11 A1 AMIT GARG A1 DAFNA D. GLADMAN A1 PHILIP J. MEASE YR 2012 UL http://www.jrheum.org/content/39/11/2214.abstract AB At the 2011 annual meeting of the Group for Research and Assessment of Psoriasis and Psoriatic Arthritis (GRAPPA), members discussed the need to develop a framework for defining inflammatory arthritis, enthesitis, dactylitis, and spondylitis, particularly as they relate to psoriatic arthritis (PsA). GRAPPA members first addressed this subject at their 2010 meeting, where the CASPAR (ClASsification of Psoriatic ARthritis) criteria were discussed. Although these are classification criteria, the CASPAR are also often applied as a diagnostic measure by clinicians screening for PsA, particularly its core criterion: recognizing the presence of inflammatory musculoskeletal disease. In breakout group discussions, GRAPPA members discussed the difficulties in recognizing overlapping or mimicking features that may result in underdiagnosing or misdiagnosing PsA.