Blood in stool, Rectal bleeding: 33 Possible Causes
Let's see if we can figure out what's causing your symptoms.
Select additional symptoms and we'll narrow your results.

What causes blood in stool and rectal bleeding? 33 possible conditions

See a list of possible causes in order from the most common to the least.


Rectal hemorrhage

Rectal bleeding is blood coming from the anus at the end of the digestive tract and may be associated with stools or bowel movements or seen in the toilet bowl or on toilet paper. Rectal hemorrhage, bleeding...

Read more »



Colitis is inflammation of the colon. Read about the different types and associated symptoms.

Read more »


Ulcerative Colitis

Ulcerative colitis is an inflammatory bowel disease. It occurs when the lining of the large intestine (colon or bowel) and the rectum become inflamed.

Read more »



Hemorrhoids, also known as piles, are swollen veins located around the anus or in the lower rectum.

Read more »


Anal Fissure

An anal fissure is a small tear or crack in the lining of the anus. Learn about anal fissure symptoms, causes, treatment, and prevention.

Read more »


Colonic (Colorectal) Polyps

Colonic polyps are growths that appear on the surface of the colon. Learn about colonic polyp symptoms, causes, treatment, and prevention.

Read more »


The Many Sides of Bacterial Gastroenteritis

Bacterial infections are common causes of gastrointestinal infections. This type of infection is also called "food poisoning" and is often caused by poor hygiene or ingesting foods contaminated with bacteria.

Read more »


Colorectal (Colon) Cancer

Colorectal cancer is a cancer that starts in the rectum or colon, located in the lower portion of the digestive system.

Read more »



Proctitis is a condition in which when the lining tissue of the inner rectum becomes inflamed. The rectum is part of your lower digestive system.

Read more »



According to the National Institute of Diabetes and Digestive and Kidney Diseases, constipation is one of the most commo...

Read more »



Diverticula are bulging sacs that can appear in the lining of your large intestine. Diverticulitis occurs when these sacs get acutely infected or inflamed.

Read more »


Anal Cancer

Anal cancer is a rare form of cancer that affects the tissues of the anus. Read more on what causes it and how to diagnose it.

Read more »


Necrotizing Enterocolitis

This condition is considered a medical emergency. Urgent care may be required.

Necrotizing enterocolitis occurs when the intestinal tissue becomes damaged and dies. Learn about its symptoms, causes, and how it's diagnosed.

Read more »



Amebiasis is a parasitic infection of the intestines commonly contracted in tropical regions.

Read more »


Peptic Ulcer

Peptic ulcers are painful sores in the lining of the stomach, esophagus, or small intestine. Peptic ulcers are a fairly common health problem.

Read more »


Crohn’s Disease

Crohn's disease is a chronic bowel disease that causes severe inflammation of the digestive tract. It is associated with abdominal pain, diarrhea, and may affect your quality of life. Crohn's disease is characterized b...

Read more »


Viral Gastroenteritis

Viral gastroenteritis, also known as the stomach flu, is caused by a number of different viruses. Its symptoms usually last for two to three days.

Read more »



Shigellosis is a bacterial infection that affects the digestive system. The Shigella bacterium is spread through contact with contaminated feces.

Read more »


Stomach Ulcer

Stomach ulcers are painful sores in the stomach lining or small intestine. They occur when the mucus that protects the stomach from digestive juices is reduced.

Read more »


E. coli Infection

E. coli is a type of bacteria normally found in intestines. But certain kinds of E. coli can cause infection and severe symptoms like diarrhea and dehydration.

Read more »

This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.