Diarrhea | Symptom Checker
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What causes diarrhea? 87 possible conditions

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

81

Carcinoid Syndrome

Carcinoid syndrome occurs when a carcinoid tumor puts dangerous chemicals back into your bloodstream.

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82

Radiation Enteritis

Radiation enteritis is a common complication of radiation treatment near the abdomen. It occurs when radiation irritates your small intestine.

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83

Staphylococcus Aureus Food Poisoning

According to the Centers for Disease Control and Prevention (CDC), Staphylococcus aureus is a common bacterium found in the nose and on the skin of about 25 percent of healthy people and animals. It is a common cause o...

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84

Hypersensitivity (Allergic) Vasculitis

Vasculitis is inflammation of blood vessels. It can damage blood vessels by thickening, scarring, and weakening the cell wells.

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85

Tropical Sprue

Tropical sprue is caused by inflammation of your intestines. This swelling makes it more difficult for you to absorb nutrients from food. This is also called malabsorption. Tropical sprue makes it particularly difficul...

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86

AIDS

There are many symptoms of the autoimmune disease HIV/AIDS, including persistent skin rashes, night sweats, and mouth sores.

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87

Smallpox

Smallpox is an extremely contagious and deadly virus for which there is no known cure. This disease has been completely eradicated.

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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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