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Published on: 1/29/2026
There are several causes to consider: blood in stool for several days can come from hemorrhoids or fissures, but also from infections, inflammatory bowel disease, diverticular bleeding, ulcers, or colorectal cancer, and the color and pattern provide important clues. Do not ignore ongoing bleeding; seek prompt care, especially with red flags like dizziness or fainting, black tarry stools, heavy bleeding or clots, severe abdominal pain, fever, dehydration, shortness of breath, or chest discomfort. What to do right now, when to go urgent, and how doctors evaluate and treat this are explained below.
Seeing blood in stool can be alarming, especially if it lasts for several days. While some causes are mild and treatable, others may be more serious and should not be ignored. This guide explains what blood in stool may look like, common and less common causes, warning signs, and when to seek medical care—using clear, plain language and evidence-based information from widely accepted medical guidance.
Blood in stool can appear in different ways, and the appearance often gives clues about where the bleeding may be coming from:
If blood in stool continues for several days, even in small amounts, it deserves attention.
Many cases of blood in stool are caused by conditions that are uncomfortable but not life-threatening. Common causes include:
These causes often improve with diet changes, hydration, and proper treatment—but bleeding should still be monitored.
If blood in stool lasts for several days or keeps coming back, digestive conditions may be involved, such as:
These conditions usually require medical evaluation and specific treatment.
While less common, some serious conditions can cause blood in stool. It is important to be aware without jumping to conclusions:
Early detection greatly improves outcomes, which is why ongoing bleeding should never be ignored.
You should speak to a doctor promptly or seek urgent care if blood in stool is accompanied by:
These signs may indicate significant blood loss or a serious underlying condition.
If you have had blood in stool for several days, consider the following steps:
If you're uncertain about what might be causing your symptoms, you can use a free blood in stool symptom checker to help identify possible conditions and determine whether you should seek immediate care or schedule a routine appointment. While a symptom checker does not replace professional medical advice, it can help you take the right next step with confidence.
When you speak to a doctor, they may:
These steps help determine the cause and guide proper treatment.
Treatment for blood in stool varies widely and is based on the underlying problem:
Early evaluation often means simpler and more effective treatment.
Taking action early is the best way to protect your digestive health and your peace of mind.
(References)
* Alajmi M, Askar AM, El-Sayed O, Basha HG, Gaber Y, El-Shabrawi MH. Lower gastrointestinal bleeding: etiology, diagnosis, and management. World J Clin Cases. 2022 Aug 6;10(22):7699-7714. doi: 10.12998/wjcc.v10.i22.7699. PMID: 36029314.
* Loffredo L, Polimeni L, Cacciotti L, Pignatelli P, Napoli R, Angelico F, Pastori D. Upper gastrointestinal bleeding: Etiology, diagnosis and management. Gastroenterol Rep (Oxf). 2022 Nov 21;10:goac046. doi: 10.1093/gastro/goac046. eCollection 2022. PMID: 36412140.
* Nardone G, Rotondano G, Mignone A, Cuomo R, Iovino P. Acute lower gastrointestinal bleeding: a narrative review. Ann Transl Med. 2023 Jul 15;11(13):469. doi: 10.21037/atm-23-2396. Epub 2023 Jul 15. PMID: 37482855.
* Pasha SF, Leighton JA. Obscure gastrointestinal bleeding. Clin Transl Gastroenterol. 2022 Oct 1;13(10):e00507. doi: 10.14309/ctg.0000000000000507. PMID: 36254070.
* Strate LL, Gralnek IM. Management of Patients With Acute Lower Gastrointestinal Bleeding: An Updated ACG Guideline. Am J Gastroenterol. 2019 Jun;114(6):875-903. doi: 10.14309/ajg.0000000000000183. PMID: 31167428.
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