Skin inflammation–Human/patient data: IL-17C is increased in lesional psoriatic and atopic dermatitis skin (62, 91–93)–Animal models: IL-17C contributes to skin inflammation induced by IMQ application and IL-23-injection (93, 96, 98). IL-17C overexpression in keratinoctes induces psoriasiform dermatitis (92). The gene discussed is IL17C; the disease is Psoriasiform dermatitis.