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Early detection of psoriatic arthritis (PsA) remains a challenge in clinical practice. Tools such as the German Psoriasis Arthritis Diagnostic (GEPARD) questionnaire have been developed for this purpose. The aim of this study was to determine the performance of the GEPARD questionnaire in the detection of PsA in psoriasis patients following rheumatology evaluation in daily clinical practice in Germany. This was a multicenter study involving 59 dermatology units (university/general hospital/office based), and the GEPARD questionnaire was distributed to psoriasis patients. Patients who had a sum score of ≥4 positive answers were referred to a rheumatologist for evaluation of PsA. We recruited 1,512 patients, of whom approximately 50% were referred. One third of the referred patients were classified as having PsA after rheumatological assessment. Rates of PsA in university/general hospital settings were higher than those observed in a doctor's office-based setting (43.7 vs. 25.8%). The GEPARD questionnaire demonstrated easy screening of psoriasis patients for PsA.

Background: The association between skin and joint manifestations in patients with psoriatic arthritis (PsA) requires further characterization. Objective: We evaluated the association between severity of skin disease and joint involvement and the effectiveness and safety of adalimumab in PsA patients by baseline psoriasis severity. Methods: Descriptive statistics and regression analyses were used to evaluate data from 1,918 PsA patients starting adalimumab treatment. Subgroup analyses were conducted on patients empirically grouped by baseline target lesion score as a marker of psoriasis severity. Results: Psoriasis severity was not associated with joint manifestations at baseline or after 12 months of treatment. All subgroups showed improvements in skin and joints during therapy, and adalimumab was safe and well tolerated in all subgroups. Conclusion: The severity of skin manifestations does not correlate with the severity of joint disease in PsA patients; even patients with mild skin disease may have extensive musculoskeletal involvement.