IL17A and irritable bowel syndrome: Mean hemoglobin level was lower among cases than control group ± SD (10.55 ± 1.31 versus 11.52 ± 0.99 gm / dl, respectively) because most of our cases were in activity by Mayo score and CDAI with recurrent bloody diarrhea.This comes in agreement with several studies that showed significant elevation of IL-17 level in the IBD patients either UC or CD than in the control group [11, 12].