CRP and psoriasis: Compared to patients with psoriasis, patients with PsA had a higher prevalence of nail psoriasis (68.8% compared to 33.3%; p = 0.063) and of treatment with conventional synthetic disease-modifying antirheumatic drugs (csDMARDs; 68.8% compared to 33.3%; p = 0.063), significantly higher median SJC (1 compared to 0; p = 0.039) and inflammatory markers (CRP: 9.4 mg/L compared to 1.5 mg/L, p = 0.044, and ESR: 23 mm/h compared to 6 mm/h, p = 0.006; Table 2).