Symptoms
Bright Red Blood in Stool: 9 Causes & When to See a Doctor
Bright red blood in stool may come from hemorrhoids, anal fissures, diverticula, or angiodysplasia, and can occur after colonoscopy. It may also be linked to Crohn’s disease, ulcerative colitis, or colorectal cancer, with pain, belly discomfort, diarrhea, fever, weight loss, or urgency. Evaluation guides care.