PT  - JOURNAL ARTICLE
AU  - MARCHESONI, ANTONIO
AU  - ATZENI, FABIOLA
AU  - SPADARO, ANTONIO
AU  - LUBRANO, ENNIO
AU  - PROVENZANO, GIUSEPPE
AU  - CAULI, ALBERTO
AU  - OLIVIERI, IGNAZIO
AU  - MELCHIORRE, DANIELA
AU  - SALVARANI, CARLO
AU  - SCARPA, RAFFAELE
AU  - SARZI-PUTTINI, PIERCARLO
AU  - MONTEPAONE, MONICA
AU  - PORRU, GIOVANNI
AU  - D’ANGELO, SALVATORE
AU  - CATANOSO, MARIAGRAZIA
AU  - COSTA, LUISA
AU  - MANARA, MARIA
AU  - VARISCO, VALENTINA
AU  - ROTUNNO, LAURA
AU  - DE LUCIA, ORAZIO
AU  - DE MARCO, GABRIELE
TI  - Identification of the Clinical Features Distinguishing Psoriatic Arthritis and Fibromyalgia
AID  - 10.3899/jrheum.110893
DP  - 2012 Apr 01
TA  - The Journal of Rheumatology
PG  - 849--855
VI  - 39
IP  - 4
4099  - http://www.jrheum.org/content/39/4/849.short
4100  - http://www.jrheum.org/content/39/4/849.full
SO  - J Rheumatol2012 Apr 01; 39
AB  - Objective. To identify the clinical features that can help to distinguish between psoriatic arthritis (PsA) and fibromyalgia (FM). Methods. Our cross-sectional study was carried out in 10 Italian rheumatology centers between January and September 2009, and enrolled all consecutive patients with PsA and FM who agreed to participate. Standard clinical and laboratory data for PsA and FM were collected from all patients. Records were made of somatic symptoms, response to nonsteroidal antiinflammatory drugs (NSAID), self-evaluated pain, general health, disability, and responses to the Fibromyalgia Impact Questionnaire. Data were statistically analyzed by univariate and multivariate analyses, and receiver-operating characteristic curves. The analysis concentrated on the clinical features shared by the 2 conditions. Results. Two hundred sixty-six patients with PsA (mean age 51.7 yrs; disease duration 10.2 yrs) and 120 patients with FM (mean age 50.2 yrs; disease duration 5.6 yrs) were evaluated. Univariate analysis showed that patients with FM had higher mean tender point and enthesitis scores, more somatic symptoms, and responded less to NSAID. Multivariate analysis showed that the presence of ≥ 6 FM-associated symptoms and ≥ 8 tender points was the best predictor of FM. Conclusion. The shared clinical features of PsA and FM that had the greatest discriminating power for FM were the number of FM-associated symptoms and tender point count.