In this guide
7 min readSymptom Guide
Fresh red blood and black stool can both be signs of bleeding, but they often point to different parts of the digestive tract. Color, smell, weakness, vomiting blood and liver history help decide urgency.
Key Takeaways
- Piles or fissure
- Colitis or infection
- Colon polyps
- Rectal or colon bleeding
- Rarely heavy upper GI bleeding
What red blood may suggest
Fresh red blood is often from the lower digestive tract, but the exact cause needs evaluation.
- Piles or fissure
- Colitis or infection
- Colon polyps
- Rectal or colon bleeding
- Rarely heavy upper GI bleeding
What black stool may suggest
Black, tarry, foul-smelling stool can indicate digested blood from the upper digestive tract.
- Stomach or duodenal ulcer
- Severe gastritis
- Variceal bleeding in liver disease
- Blood thinner-related bleeding
- Iron tablets can also darken stool
Warning signs
Bleeding with weakness, dizziness, fast pulse, vomiting blood or known liver disease needs urgent attention.
Tests that may be advised
Depending on symptoms, the doctor may advise CBC, stool testing, endoscopy, colonoscopy, liver tests or admission for monitoring.