IGHE and achondroplasia: Compared with the GLKC group, IL‐4 was statistically different in the SGMH group (P < 0.001) (Figure 4(b)), IgE, IL-4, IL‐13, and CGRP were significantly different in the ACH group (P < 0.001, P < 0.05) (Figures 4(a)–4(f)).