When to seek medical advice

Seek medical advice for any blood in stool. Seek emergency care if you notice:

  • Large amounts of blood
  • Lightheadedness
  • Rapid heart rate
  • Weakness

Blood in stool in adults

Find possible causes of blood in stool based on specific factors. Check one or more factors on this page that apply to your symptom.

Blood appears
Triggered or worsened by
Relieved by
Accompanied by