What causes diarrhea, fatigue and weight loss? 18 possible conditions

Viewing 18 of 18 results

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

1

Lactose Intolerance

Lactose intolerence occurs when a person's small intestine can't break down lactose, an enzyme found in dairy foods. The condition can cause many gastrointestinal symptoms.

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2

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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3

AIDS

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

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4

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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5

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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6

Hyperthyroidism

The thyroid gland produces a hormone that controls how your cells use energy (metabolize). Hyperthyroidism occurs when the body produces excessive amounts, causing rapid heart rates, weight loss, and heat intolerance.

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7

Colorectal (Colon) Cancer

Colorectal cancer is a cancer that originates in the rectum or colon. Both of these organs are located at the lower portion of your digestive system. The colon is at the end of the large intestine and the rectum is a...

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8

Amebiasis

Amebiasis is a parasitic infection, common in tropical countries and caused by contaminated water. Symptoms can be severe and usually start one to four weeks after exposure.

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9

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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10

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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11

Cystic Fibrosis

Cystic fibrosis is a recessive genetic disorder that can lead to serious complications or even put your life at risk. It may cause severe problems in the lungs, pancreas, liver, and intestine. It is an inherite...

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12

Pancreatic Cancer

Pancreatic cancer occurs within the tissues of the pancreas, a vital organ that is located behind the stomach. The pancreas plays an essential role in digestion by producing enzymes that the body needs to digest fats...

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13

Addison’s Disease

Addison's disease occurs when the adrenal cortex is damaged and the adrenal glands do not produce enough steroid hormones called cortisol and aldosterone. Cortisol regulates the body's reaction to stressful situations...

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14

Peripheral Neuropathy

Your peripheral nervous system connects the nerves from the brain and spinal cord (central nervous system) to the rest of the body, including the arms, hands, feet, legs, internal organs, mouth and face. The job o...

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15

Leishmaniasis

Leishmaniasis is a parasitic disease. It is spread by the bite of an insect called a sandfly. Leishmaniasis is sometimes called kala-azar. There are two main forms of the disease. Each is associated with differen...

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16

Ascariasis

Ascariasis is an infection caused by Ascaris lumbricoides, which is one species of roundworm. Infections caused by roundworms-which are a type of parasitic worm that can be as small as one millimeter or as long as a on...

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17

Q Fever

Q fever, also called query fever, is a bacterial infection caused by the bacteria Coxiella burnetii. The bacteria are most commonly found in cattle, sheep, and goats around the world. Humans typically get Q fever whe...

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18

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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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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