In the DEX group, the expressions of IL-1β, IL-6, TNF-α, IL-17, and IL-22 were significantly lower than the model group (p < 0.05), suggesting that the expressions of inflammatory cytokines associated with psoriasis have been inhibited after the intervention of DEX (Figures 4(a) and 4(b)). The gene discussed is IL17A; the disease is psoriasis.