What causes blood in stool? 41 possible conditions

Viewing 1 - 20 of 41 results

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

1

Bloody Or Tarry Stools

Bloody or tarry stools refer to a stool sample that is either dark red or black in color. Bloody or tarry stools can indicate bleeding or other injuries in your gastrointestinal tract. You may also have dark, discolore...

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2

Hemorrhoids

Hemorrhoids, also called piles, are swollen veins located around the anus or in the lower rectum. Internal hemorrhoids develop within the anus; external hemorrhoids develop outside of the anus. Of the two forms...

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3

Peptic Ulcer

Peptic ulcers are sores that develop in the lining of the stomach, esophagus, or rarely in small intestine. They are usually caused by H. pylori, excessive NSAID or alcohol usage, smoking, or stomach cancer.

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4

Colonic (Colorectal) Polyps

Colonic polyps, also known as colorectal polyps, are growths that appear on the surface of your large intestine, or colon. You can have more than one polyp, and they may be flat or raised, benign or cancerous. Accordin...

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5

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.

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6

Colitis

Colitis is inflammation of the colon, often causing discomfort and pain in the abdomen, as well as other gastrointestinal symptoms. Colitis has many possible causes, which determine the type.

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7

Constipation

Constipation refers to infrequent bowel movements with hard, dry stools. Poor diet and dehydration are usually to blame, though certain diseases or other medical issues are possible causes.

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8

Ulcerative Colitis

In UC, the lining of the large intestine and the rectum become inflamed. This produces tiny sores or ulcers on the lining of the colon, often accompanied by diarrhea and cramping.

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9

Proctitis

Proctitis occurs when the rectum becomes inflamed, causing pain and discomfort. It sometimes causes a constant urge to defecate. It's treated with medications, lifestyle changes, and infrequently surgery.

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10

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...

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11

E. coli Infection

E. coli is a type of bacteria that normally live in the intestines of people and animals. However, some types of E. coli, particularly E. coli 0157:H7, can cause intestinal infection. Symptoms of intestinal infectio...

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12

Stomach Ulcer

Stomach ulcers, also known as peptic ulcers, are painful sores that can be found in the stomach lining or small intestine. These ulcers occur when the thick layer of mucus that protects the stomach from digestive juice...

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13

Gastritis

Gastritis is inflammation in the protective lining of the stomach. Acute gastritis involves sudden, severe inflammation, while chronic gastritis involves long-term inflammation that can last for years, if lef...

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14

Food Poisoning

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

Every year, millions of people eat food contaminated with bacteria, viruses, or parasites. The result can be food poisoning, an uncomfortable experience characterized by nausea, vomiting, and diarrhea. One in si...

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15

Ischemic Colitis

Ischemic colitis (IC) is inflammation of the large intestine (colon). It occurs when for one reason or another, not enough blood flows to the colon. IC is most common among those over the age of 60, though it can occu...

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16

Viral Gastroenteritis

Viral gastroenteritis is an inflammation of the stomach and intestines caused by one of any number of viruses. Also known as the stomach flu, viral gastroenteritis can affect anyone throughout the world. This highl...

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17

Bleeding Esophageal Varices

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

Bleeding esophageal varices occur when swollen veins (varices) in your lower esophagus, the muscular tube that connects your mouth with your stomach, rupture and bleed due to excess pressure. This condition constitute...

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18

Anal Fissure

An anal fissure is a small cut or tear in the skin lining the anus. Childbirth, straining during bowel movements, or bouts of constipation or diarrhea can all tear the anal lining. Anal fissures are usually not a caus...

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19

Bleeding

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

Bleeding is the name commonly used to describe blood loss. It can refer to blood loss inside the body (internal bleeding) or blood loss outside of the body (external bleeding). Blood loss can occur in almost any area o...

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20

Diverticulitis

Diverticulitis occurs when diverticula (bulging sacs that usually appear in the lining of the large intestine) get infected or inflamed. Although diverticula are most common in the large intestine (colon), they ca...

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