They produce inflammatory cytokines such as interleukin (IL)-1β, IL-6, IL-8, IL-18, and IL-25 and chemokines such as thymus and activation-regulated chemokine (TARC), cutaneous T cell attracting chemokine (CTACK), and monocyte derived chemokine (MDC) in skin inflammation [6,7,8]. This evidence concerns the gene CCL17 and dermatitis.