Cytokine serum levels in psoriatic patients of different severity Cytokine Severe (n=12) X±SD Moderate (n=23) X±SD p IL-2 (pg / ml) 102, 509 ± 66, 116 77, 780 ± 72, 645 >0, 05 IL-4 (pg / ml) 14, 022 ± 13, 416 4, 920 ± 4, 908 <0, 05 15 IL-6 (pg / ml) 45, 597 ± 134, 231 1, 603 ± 1, 432 <0, 01 IL-8 (pg / ml) 130, 570 ± 387, 571 12, 565 ± 20, 254 >0, 05 IL-10 (pg / ml) 1, 490 ± 1, 230 2, 241 ± 2, 437 >0, 05 IL-17 (pg / ml) 2, 699 ± 3, 228 1, 327 ± 0, 828 >0, 05 TNF-α (pg / ml) 7, 036 ± 18, 934 1, 561 ± 0, 274 >0, 05 INF - (pg / ml) 8, 977 ± 3, 743 7, 963 ± 2, 931 >0, 05 Conclusion: Serum concentration of IL-4, IL-6 in the severe group was significantly higher than those in the moderate group.