Our Services
Medical Information
Helpful Resources
Published on: 6/24/2026
Blood in stool—whether bright red or dark—can signal a range of conditions, from common hemorrhoids and anal fissures to more serious issues like inflammatory bowel disease, colon polyps, or gastrointestinal bleeding. The color, volume, and accompanying symptoms (such as pain, fatigue, or weight loss) are key clues that help determine whether home care is appropriate or urgent medical evaluation is needed.
Because causes vary widely and some require prompt treatment, identifying your specific pattern matters. The fastest way to clarify what's likely going on—and what to do next—is to take a free, instant, online symptom check. Built by doctors, it analyzes your symptoms in minutes and helps you confidently navigate your next steps.
Reviewed for medical accuracy: 06/18/2026
Seeing blood in your stool can be alarming. Most of the time, it isn't a life-threatening issue, but it's important to understand when you can manage symptoms at home and when you need medical evaluation. This guide covers common causes of blood in stool, how to tell if it's likely hemorrhoids or something more serious, and what to do next.
Blood in stool can come from various sources in your digestive tract. Here are the most frequent culprits:
• Hemorrhoids
• Anal fissures
• Infections (bacterial, viral, or parasitic)
• Inflammatory bowel disease (Crohn's disease, ulcerative colitis)
• Colon polyps or colorectal cancer
• Diverticular disease
• Gastrointestinal bleeding from ulcers or gastritis
Hemorrhoids are swollen veins in the rectum or anus. They're very common—up to half of adults experience them by age 50. Hemorrhoids can be:
• Internal: Just inside the rectum, usually painless but may bleed bright red blood on toilet paper or in the toilet bowl.
• External: Under the skin around the anus, often painful or itchy, may form a hard lump (thrombosed hemorrhoid).
• Bright red blood visible on the surface of stool, on toilet paper, or in the toilet bowl
• Mild discomfort, itching, or burning around the anus
• A small lump or swelling near the anus (external hemorrhoid)
If you notice only a small amount of bright red blood and you have typical hemorrhoid symptoms, you may try home care first.
If symptoms persist beyond a week, worsen, or you notice more blood, see a doctor for evaluation.
While hemorrhoids are benign, other conditions require prompt medical attention:
Small tears in the lining of the anus, often due to passing hard stools.
• Symptoms: Sharp pain during and after bowel movements, bright red blood on the stool surface or toilet paper.
• Treatment: Similar home care to hemorrhoids; severe fissures may require prescription medication or minor procedure.
Includes Crohn's disease and ulcerative colitis, chronic conditions that inflame the digestive tract.
• Symptoms: Frequent diarrhea (sometimes with pus or blood), abdominal pain, weight loss, fatigue.
• Next Steps: See a gastroenterologist. Diagnosis often requires blood tests, stool tests, and colonoscopy.
Polyps are growths on the colon lining that can bleed; some develop into cancer.
• Symptoms: Often no symptoms at first. As polyps grow or cancer progresses, you may notice:
– Blood in stool (bright red or darker)
– Change in bowel habits (diarrhea, constipation)
– Unexplained weight loss
– Abdominal discomfort
• Next Steps: Anyone over age 45 (or earlier if risk factors present) should have regular colon cancer screening (colonoscopy or other approved tests).
Small pouches (diverticula) in the colon wall can become inflamed (diverticulitis) or bleed.
• Symptoms: Sudden, painless bright red bleeding, abdominal cramping or tenderness, possible fever.
• Next Steps: Seek evaluation; some cases require antibiotics or surgery.
Bleeding in the esophagus, stomach, or small intestine can cause dark, tar-like stools (melena).
• Symptoms: Black, sticky stools; may be accompanied by vomiting blood or coffee-ground–like material.
• Next Steps: This often signals serious bleeding; seek immediate medical care.
Pay attention to these factors to decide if you can monitor at home or need medical attention:
Color of Blood
– Bright red: Usually from lower GI tract (hemorrhoids, fissures, diverticula).
– Dark red or maroon: From further up the colon or small intestine.
– Black/tarry: Suggests upper GI bleeding; must be evaluated urgently.
Amount of Blood
– Spotting on toilet paper: Often minor (hemorrhoids, fissures).
– Blood coating stool or in toilet bowl: May need prompt evaluation.
– Large amounts of blood or clots: Seek urgent care.
Associated Symptoms
– Painful bowel movements: Fissure or external hemorrhoid.
– Abdominal pain/cramping, fever: Infection, IBD, diverticulitis.
– Weight loss, changes in appetite, fatigue: Possible IBD or cancer.
– Dizziness, rapid heartbeat, low blood pressure: Signs of significant blood loss—go to the emergency room.
Even if you suspect hemorrhoids, certain situations call for medical advice:
• Bleeding persists beyond one week despite home remedies
• Blood is dark, tarry, or mixed throughout stool
• You notice significant changes in bowel habits or unexplained weight loss
• You develop severe abdominal pain or signs of anemia (weakness, shortness of breath, rapid heart rate)
• You're over age 45 and haven't had colon cancer screening
• You have a personal or family history of colorectal cancer or polyps
If you're unsure whether your symptoms warrant a doctor's visit, you can use a free symptom checker to help evaluate what might be causing your bleeding and determine the appropriate next steps for your situation.
A healthcare provider will tailor tests and treatments based on your symptoms and risk factors:
Treatment options may include:
• Dietary and lifestyle changes (fiber, hydration, exercise)
• Medications (anti-inflammatories for IBD, antibiotics for infections)
• Minimally invasive procedures (rubber band ligation for hemorrhoids)
• Surgery (polyp removal, treatment of severe diverticulitis, cancer surgery)
To reduce the chance of bleeding or hemorrhoid flare-ups:
Finding blood in your stool can be unsettling, but many causes—like hemorrhoids—are easily managed. At the same time, other conditions require prompt evaluation to prevent complications. If you ever feel unsure about your symptoms or if bleeding is significant, dark, persistent, or accompanied by other worrying signs, speak to a doctor right away. Your health and peace of mind are worth it.
(References)
* Furtner A, Aschenbrenner B, Huber R, et al. Rectal bleeding: a practical guide for general practitioners. *Med Klin Intensivmed Notfmed*. 2022 Sep;117(6):449-456. doi: 10.1007/s00063-022-00913-6. Epub 2022 Aug 4. PMID: 35921612.
* Gupta R, Kumar A, Chugh SK, et al. Evaluation and management of rectal bleeding. *J Fam Med Prim Care*. 2021 Mar;10(3):1122-1127. doi: 10.4103/jfmpc.jfmpc_2069_20. PMID: 33917897; PMCID: PMC8116933.
* Al Halabi H, Al-Ghefeeli M, Hassan S, Al-Qudimat J, Ali A, Al Awaad M, Al Homsi M, Al Qaydi S. The diagnostic and therapeutic management of lower gastrointestinal bleeding: a narrative review. *J Clin Med*. 2024 Feb 2;13(3):887. doi: 10.3390/jcm13030887. PMID: 38318712; PMCID: PMC10857900.
* Chou C, Kao JY. Lower gastrointestinal bleeding: causes, diagnosis, and management. *Gastroenterol Rep (Oxf)*. 2021 Aug;9(4):279-291. doi: 10.1093/gastro/goab025. PMID: 34299951; PMCID: PMC8372605.
* Gupta R, Kumar A, Chugh SK, et al. Hemorrhoids: a review of current management. *J Fam Med Prim Care*. 2021 Mar;10(3):1098-1102. doi: 10.4103/jfmpc.jfmpc_2068_20. PMID: 33917887; PMCID: PMC8116934.
We would love to help them too.
For First Time Users
We provide a database of explanations from real doctors on a range of medical topics. Get started by exploring our library of questions and topics you want to learn more about.
Was this page helpful?
Purpose and positioning of servicesUbie Doctor's Note is a service for informational purposes. The provision of information by physicians, medical professionals, etc. is not a medical treatment. If medical treatment is required, please consult your doctor or medical institution. We strive to provide reliable and accurate information, but we do not guarantee the completeness of the content. If you find any errors in the information, please contact us.