IL17A and psoriasis: Furthermore, Lico B reduced Th17 differentiation and IL-17 production in murine models, demonstrating dual antiproliferative and immunomodulatory effects.<h4>Conclusion</h4>Lico B alleviates psoriasis by targeting SCD1 to modulate lipid metabolism, inhibit keratinocyte hyperproliferation, and dampen Th17/IL-17-driven inflammation.