Noticing blood in your stool can be concerning, and many people are unsure what it might mean. While this symptom can sometimes be caused by minor conditions, it can also signal digestive issues that require medical evaluation.
Understanding the possible causes of blood in the stool and knowing when to speak with a gastroenterologist can help patients take appropriate steps toward protecting their digestive health.
What Does Blood in the Stool Look Like?
Blood associated with bowel movements can appear in several different ways depending on where the bleeding occurs within the digestive tract.
Patients may notice:
- Bright red blood on toilet paper
- Blood in the toilet bowl
- Dark or maroon-colored stool
- Black, tarry stool
These differences can help physicians determine where bleeding may be occurring in the digestive system.
Common Causes of Blood in the Stool
Several digestive conditions may cause bleeding during bowel movements. Some are relatively common and manageable, while others require more detailed evaluation.
Hemorrhoids
Hemorrhoids are swollen veins in the rectum or anus and are one of the most frequent causes of bright red blood during bowel movements. Bleeding may appear on toilet paper or in the toilet bowl and is often associated with straining or constipation. Persistent cases are sometimes treated with hemorrhoid banding.
Anal Fissures
An anal fissure is a small tear in the lining of the anus that can occur when passing hard stool. This condition may cause sharp pain during bowel movements and small amounts of bright red bleeding.
Colon Polyps
Colon polyps are growths that form on the lining of the colon. While many polyps are benign, some can develop into colorectal cancer over time. Certain polyps may cause bleeding, which is why screening and evaluation are important.
Inflammatory Bowel Disease (IBD)
Conditions such as Crohn’s disease and ulcerative colitis can cause inflammation in the digestive tract that leads to symptoms including diarrhea, abdominal pain, and blood in the stool.
Diverticular Bleeding
Diverticula are small pouches that can develop in the wall of the colon. In some cases, these pouches may bleed, leading to noticeable blood in the stool.
Why Colon Cancer Screening Matters
Although blood in the stool is often caused by conditions such as hemorrhoids or fissures, it can also be associated with colorectal cancer. For this reason, persistent or unexplained bleeding should be evaluated by a healthcare professional.
Routine colonoscopy screening plays an important role in detecting colon polyps or early signs of colorectal cancer before symptoms develop. Removing polyps during screening can help prevent cancer from forming.
Patients should discuss recommended screening timelines with their healthcare provider based on age, medical history, and risk factors. If you’re due for one, here’s guidance on when to get a colonoscopy.
When to See a Gastroenterologist
Occasional minor bleeding may occur with conditions such as hemorrhoids or fissures, but persistent or unexplained bleeding should be discussed with a physician.
Evaluation by a gastroenterologist may be recommended if:
- Blood in the stool occurs repeatedly
- Bleeding is accompanied by abdominal pain or diarrhea
- Stool changes in color or consistency
- Symptoms are associated with fatigue or weight loss
- You are due for colorectal cancer screening
A gastroenterologist can determine the most appropriate diagnostic approach and recommend further testing if needed.
Digestive Care at Suburban Gastroenterology
At Suburban Gastroenterology, our physicians evaluate a wide range of digestive symptoms, including rectal bleeding and changes in bowel habits. Our team uses advanced diagnostic tools to identify the cause of symptoms and provide individualized care.
We proudly serve patients across the western suburbs of Chicago, including Naperville, Plainfield, and Sandwich, Illinois, offering comprehensive digestive health services such as colonoscopy and evaluation of gastrointestinal conditions.
If you have noticed blood in your stool or other changes in digestive health, our specialists can help determine whether further evaluation may be appropriate.
Frequently Asked Questions
Is blood in the stool always serious?
Not always. Conditions such as hemorrhoids or anal fissures may cause minor bleeding, but persistent bleeding should always be evaluated.
What color can blood in stool appear?
Blood may appear bright red, dark red, or black depending on where the bleeding occurs in the digestive tract.
When should I see a doctor about rectal bleeding?
If bleeding occurs repeatedly, is accompanied by pain or fatigue, or if you are due for colon cancer screening.