Our previous work noticed that ‘Mafang Xijiao Dihuang Decoction’, including Fang-Feng component, ameliorated the psoriasis area severity index (PASI) index and suppressed the expression levels of IL-17 and VEGF in peripheral blood for psoriasis patients [18], indicating its potential pharmacological activities in inflammatory microenvironment. This evidence concerns the gene VEGFA and psoriasis.