Indeed, the IL-1β /IL-1ra ratio was significantly correlated both with the total BPDAI score and with the erythema/urticaria BPDAI subscore (Figures 2F–H, n = 20; r = 0.4545, p = 0.0441 and r = 0.5663, p = 0.0092, respectively), but not with the blisters/erosions BPDAI subscore (Figure 2G, n = 20, r = 0.06, p = 0.7977). Here, IL1B is linked to Erythema.