Rectal Bleeding: Causes, Symptoms, and When to See a Doctor

Seeing blood in your stool or after a bowel movement can be alarming. Rectal bleeding is a common symptom that can range from minor conditions to more serious concerns.

While many causes are not dangerous, rectal bleeding should always be evaluated, especially if it is persistent, unexplained, or associated with other symptoms.

Dr. Stephenson provides thorough evaluation and treatment for rectal bleeding, with a focus on identifying the cause and guiding appropriate care.

What Is Rectal Bleeding?

Rectal bleeding refers to any blood that passes from the anus. It may appear as:

Bright red blood on toilet paper or in the toilet
Blood mixed with stool
Dark or black stools (which may indicate bleeding higher in the digestive tract)

The appearance can provide clues about the source of bleeding.

What Causes Rectal Bleeding?

Common causes include:

Hemorrhoids (most common cause)
Anal fissures (small tears in the lining of the anus)
Diverticulitis or diverticular bleeding
Colon polyps
Colorectal cancer
Inflammatory bowel disease (such as Crohn’s disease or ulcerative colitis)

Some causes are minor, while others require prompt diagnosis and treatment.

When Should You Be Concerned About Rectal Bleeding?

You should seek medical evaluation if you have:

Bleeding that is persistent or recurrent
Large amounts of blood
Black or tarry stools
Associated symptoms such as:
- Abdominal pain
- Changes in bowel habits
- Unexplained weight loss
- Fatigue or anemia

Even small amounts of bleeding should not be ignored, especially in adults over age 45.

How Is Rectal Bleeding Evaluated?

Evaluation depends on your symptoms and medical history, but may include:

Physical examination
Laboratory testing (to check for anemia)
Imaging studies if needed
Colonoscopy, which allows direct visualization of the colon and rectum

A colonoscopy is often the most effective way to identify the source of bleeding and treat certain conditions at the same time.

Is Rectal Bleeding Always Serious?

Not always. Many cases are caused by conditions like hemorrhoids or minor irritation.

However, rectal bleeding can also be an early sign of more serious conditions, including colon cancer.

The key point: it is important to find the cause rather than assume it is harmless.

How is Rectal Bleeding Treated?

Treatment depends on the underlying cause:

Hemorrhoids or fissures: Often treated with diet changes, medications, or minor procedures
Polyps: Removed during colonoscopy
Diverticular disease: May require medication or, in some cases, surgery
Cancer: Requires a coordinated treatment plan, often including surgery

Your care plan will be tailored to your specific diagnosis.

Learn More About Rectal Bleeding and Digestive Health

For trusted, in-depth information, visit:

Cleveland Clinic – Causes and treatment of rectal bleeding
Mayo Clinic – Symptoms checker
American Cancer Society – Information on colorectal cancer symptoms

Frequently Asked Questions

Is bright red blood in stool serious?
It is often caused by hemorrhoids, but should still be evaluated to rule out other conditions.

Can hemorrhoids cause a lot of bleeding?
Yes, but significant or persistent bleeding should always be checked.

Do I need a colonoscopy for rectal bleeding?
In many cases, yes—especially if you are over 45 or have risk factors.

Can rectal bleeding go away on its own?
Sometimes, but the underlying cause should still be identified.

Take the Next Step in Protecting Your Digestive Health

Rectal bleeding can be concerning, but identifying the cause is the first step toward effective treatment and peace of mind.

Dr. Stephenson and her team provide careful, thorough evaluation using modern diagnostic tools to ensure you receive the right care.

If you are experiencing rectal bleeding, don’t ignore it—it may be time to have it evaluated.

Contact our office today or request an appointment online to schedule your consultation.