CRP and Skin ulcer: In simple linear regression analysis, time to resolution had a positive association with skin ulcer or fistula (B = 1.480; p < 0.001), bilateral lesions (B = 1.325; p < 0.001), serum CRP level (B = 0.404; p < 0.001), and MTX use (B = 1.203; p < 0.001), and it had a negative association with breastfeeding (B = −1.188; p = 0.033) and smoking (B = −1.650; p = 0.032).