ROC analysis (Fig. 2; Table 4) demonstrated that PCT, IL-6, and IL-10 (AUC > 0.7) were effective biomarkers for distinguishing GP-BSI from GN-BSI, whereas CRP, ESR, WBC, NE%, and PLT exhibited lower efficiency in diagnosing GP-BSI (AUC < 0.60). This evidence concerns the gene CRP and bathing suit ichthyosis.