Blood in Stool

⚠️ Rectal bleeding should be evaluated by a healthcare provider.

Blood in stool can indicate colorectal cancer, IBD (Crohn's, ulcerative colitis), hemorrhoids, or diverticular disease. Dark/tarry stool (melena) suggests upper GI bleeding. All rectal bleeding warrants medical evaluation.

Body System: Gastrointestinal / Oncological

Related Diseases

• Colorectal Cancer — Rectal bleeding is a key symptom of colorectal cancer, especially with change in bowel habits and weight loss.
• Inflammatory Bowel Disease — Bloody diarrhea is the hallmark of ulcerative colitis; Crohn's may also cause GI bleeding.

Related Compounds

• Pembrolizumab
• Curcumin

Frequently Asked Questions

When is blood in stool a sign of cancer?

Red flags: persistent bleeding >2 weeks, dark/tarry stools (melena), associated weight loss, change in bowel habits, iron deficiency anemia, age >45, family history of colorectal cancer. Colonoscopy is the gold standard for evaluation. Colorectal cancer screening should begin at age 45 for average-risk individuals.