[Clinical study of modified Yiyi Baijiang Decoction on psoriasis vulgaris due to dampness-heat accumulation].

The present study observed the clinical effect of modified Yiyi Baijiang Decoction on psoriasis vulgaris and explored its influence on growth factors and inflammatory factors in the serum and skin tissues. A total of 130 patients were randomly divided into control group and experimental group, with 65 cases in each group. The patients in the control group received Acitretin Capsules and Calcipotriol Ointment, and those in the experimental group received modified Yiyi Baijiang Decoction combined with external application for four weeks. The psoriasis area and severity index(PASI), blood vessel count in the superficial dermis(SDBVC), skin thickness(STK), and traditional Chinese medicine(TCM) symptoms were observed before and after treatment. The growth factors [epidermal growth factor(EGF), endothelial cell-specific molecule-1(ESM-1), fibroblast growth factor-23(FGF-23), and transforming growth factor-β1(TGF-β1)] and inflammatory factors [nuclear factor-κB(NF-κB), prealbumin(PA), CC chemokine ligand 20(CCL20), and procalcitonin(PCT)] in the serum and skin tissues were detected. The total effective rate was 98.5% in the experimental group, higher than that 83.1% in the control group(P<0.05). Compared with the control group after treatment, the experimental group showed decreased PASI, SDBVC, STK, TCM symptoms, ESM-1, FGF-23, TGF-β1, NF-κB, CCL20, and PCT(P<0.05), and increased EGF and PA(P<0.05). The incidence of adverse events was 1.5% in the experimental group, lower than that 21.5% in the control group(P<0.05). The results showed that modified Yiyi Baijiang Decoction could effectively relieve skin lesions in patients with psoriasis vulgaris and improve the growth factors and inflammatory factors in the serum and skin lesions, with high safety.