Hello Thank you for trusting HCM Most rectal bleeding comes from the colon,rectum, or anus and can be associated with diarrhea. The color of the blood during rectal bleeding often depends on the location of the bleeding in the gastrointestinal tract. Generally, the closer the bleeding site is to the anus, the blood will be a brighter red. Thus, bleeding from the anus, rectum, and the sigmoid colon tend to be bright red, whereas bleeding from the transverse colon and the right colon (transverse and right colon are several feet away from the anus) tend to be dark red or maroon colored. Causes of rectal bleeding include hemorrhoids, anal fissure, proctitis, Crohn s disease, diverticulosis, ulcerative colitis, rectal ulcer, rectal prolapse, ischemic colitis, angiodysplasia, rectal trauma, anal cancer, colon cancer, proctitis from radiation therapy, and others. Avoid spicy food and alcohol, avoid caffeine and smoking. Avoid fast food. Please consult your doctor he will examine the anus and rectum through proctoscope then he will treat you accordingly.