Gastrointestinal bleeding | Symptom Checker
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What causes gastrointestinal bleeding? 45 possible conditions

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

21

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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22

Colitis

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

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23

Low Platelet Count (Thrombocytopenia)

A low platelet count, or thrombocytopenia, can range from mild to severe, depending on the cause. The symptoms can sometimes include severe bleeding.

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24

Enteritis

Enteritis is the inflammation of your small intestine. In some cases, the inflammation includes the stomach and large intestine.Ingesting food and water contaminated with bacteria is a leading cause of enteritis...

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25

Kaposi's Sarcoma

Kaposi's sarcoma (KS) is a cancerous tumor. It commonly appears in multiple locations on the skin and around the nose, mouth, genitals, and/or anus, but can also attack the internal organs. It's caused by a virus calle...

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26

Lactose Intolerance

Lactose intolerance is the inability to break down lactose, a natural sugar. Learn about signs and treatment.

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27

Ischemic Colitis

Ischemic colitis (IC) is inflammation of the large intestine (colon). IC occurs when not enough blood flows to the colon. Abdominal pain is a common symptom.

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28

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.

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29

Hookworm Infections

Hookworms are parasites that affect the small intestine and lungs. The first sign of infection is usually a rash where the parasite entered the skin, followed by diarrhea.

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30

Ebola Virus and Disease

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

Ebola disease is a rare, often fatal illness. One of its late-stage symptoms is a bleeding rash over the entire body.

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31

Anthrax

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

Anthrax is a serious illness caused by a microbe called Bacillus anthracis that lives in soil. Read about the symptoms of anthrax.

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32

Yellow fever

Yellow fever is a serious, potentially deadly flu-like disease spread by mosquitoes. It's characterized by a high fever and jaundice. It isn't curable.

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33

Esophagitis

Esophagitis is inflammation of the esophagus that can be caused by acid reflux or certain medications. You may develop a sore throat or heartburn.

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34

Glomerulonephritis

Glomerulonephritis is a serious illness that can be life-threatening and requires immediate treatment. The condition is sometimes called nephritis.

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35

Polymyalgia Rheumatica

Polymyalgia rheumatica is an inflammatory disorder that causes muscle pain and stiffness. Learn about its symptoms, diagnosis, and treatment.

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36

Proctitis

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.

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37

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.

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38

Celiac Disease (Gluten Intolerance)

Celiac disease is a digestive disorder caused by an immune reaction to gluten. Symptoms vary but can include arthritis, fatigue, and abdominal symptoms.

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39

Christmas Disease (Hemophilia B)

Christmas disease - also called hemophilia B or factor IX hemophilia - is a rare genetic disorder in which your blood does not clot properly. If you have Christmas disease, your body produces little or no blood-clottin...

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40

Amebiasis

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

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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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