Abdominal bloating, Diarrhea: 21 Possible Causes
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What causes abdominal bloating and diarrhea? 21 possible conditions

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


Lactose Intolerance

Lactose intolerance is the inability to break down a type of natural sugar called lactose. Lactose is commonly found in dairy products, such as milk and yogurt. A person becomes lactose intolerant when his or her smal...

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Giardiasis is an infection in your small intestine caused by microscopic parasites called giardia.

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Food Allergy Basics

Food allergies are overblown responses by the immune system to foods that aren't typically harmful - like eggs and peanuts. Continue reading and learn more about food allergies, and how to prevent or treat sever...

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

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Malabsorption Syndrome

Malabsorption syndrome occurs when the intestine's ability to absorb important nutrients is compromised. Certain conditions, such as Celiac disease, cystic fibrosis, and dairy allergies may lead to malabsorption.

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PMS (Premenstrual Syndrome)

Premenstrual syndrome causes a wide variety of emotional and physical symptoms. Learn more about it.

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Irritable Bowel Syndrome

Irritable bowel syndrome (IBS) is a chronic condition that affects the large intestine and causes many uncomfortable symptoms, such as bloating, gas, cramping, diarrhea, constipation, and pain.

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Celiac Disease (Gluten Intolerance)

Celiac disease is a digestive disorder caused by an abnormal immune reaction to gluten. Learn about celiac disease systems, diagnosis, and treatment.

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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...

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

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Hookworm Infections

Hookworms are parasites that affect the small intestine and lungs. Read more about the symptoms of this infection and treatment options.

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

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Intestinal Obstruction

If your small or large intestine becomes blocked, fluid and digested food cannot move through. This can cause bloating, stomach cramps, and burping.

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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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Cystic Fibrosis

Cystic fibrosis causes severe damage to the respiratory and digestive systems. Learn about its symptoms, causes, diagnosis, and treatment.

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Systemic Sclerosis (Scleroderma)

Systemic sclerosis (SS) is an autoimmune disorder in which the body's immune system attacks the body.

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Legionnaires' Disease

Legionnaires' disease is a severe type of pneumonia, or lung infection. Learn about its symptoms, causes, treatment, and prevention.

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Hirschsprung Disease

Hirschsprung disease is a blockage that occurs in the colon in about one of every 5,000 births. The cause is unknown, but tends to affect more boys and those with Down syndrome or another inherited condition.

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Peripheral Neuropathy

Peripheral neuropathy is a disorder that occurs when your peripheral nerves malfunction because they're damaged.

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Poliomyelitis, or polio, is a highly contagious disease that is caused by a virus that attacks the body's nervous system.

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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.