What causes abdominal pain and loss of appetite? 70 possible conditions

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

21

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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22

Stomach Cancer (Gastric Adenocarcinoma)

Gastric cancer forms inside the stomach. Symptoms include pain or fullness in the stomach, nausea, and dark stool.

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23

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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24

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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25

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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26

Infectious Mononucleosis

Infectious mononucleosis, or "mono," is a group of symptoms caused by the Epstein-Barr virus. One potential symptom is a pink rash that looks like the measles.

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27

Pyelonephritis

Pyelonephritis is an inflammation of the kidney and upper urinary tract. Symptoms include flushed skin, back pain, fever, and nausea.

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28

Underactive Pituitary Gland (Hypopituitarism)

The pituitary gland releases hormones that play roles in body processes like bone growth and metabolism. An underactive pituitary can disrupt these processes. Causes may include tumors, traumatic injuries, and diseases.

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29

Chickenpox

Also known as varicella, chickenpox is a virus that often affects children. It is characterized by itchy, red blisters that appear all over the body.

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30

Hepatitis A

Hepatitis A (HAV) is a short-term type of hepatitis. It usually requires no treatment, but symptoms include fever, nausea, jaundice, and itchy skin, among others.

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31

Addison’s Disease

Addison's disease occurs when the adrenal cortex is damaged and the adrenal glands don't produce enough of the steroid hormones cortisol and aldosterone.

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32

Chlamydia Infection

Chlamydia is a sexually transmitted disease that should be treated quickly in order to avoid complications. It is caused by bacteria that are usually spread through sexual contact. People with chlamydia often don't hav...

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33

Chronic Pancreatitis

The pancreas is vital to digestion and blood sugar regulation. Chronic pancreatitis is long-lasting inflammation that causes nausea and pain in the abdomen, and may eventually lead to scarring.

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34

Urethritis

Urethritis is an infection of the urethra, the tube that carries urine from the bladder and semen out of the body. Symptoms include burning while urinating, abdominal pain, and discharge.

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35

Pancreatic Cancer

Pancreatic cancer is cancer of the pancreas, an organ that secretes an enzyme that breaks down fats, carbs, and proteins. Pancreatic cancer can obstruct the outflow of bile from the liver and causes yellow skin.

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36

Abdominal Aortic Aneurysm

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

The aorta carries blood from your heart down to your abdomen, legs, and pelvis. Swollen or bulging aortic walls in the abdomen is known as an abdominal aortic aneurysm, which causes pain.

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37

Botulism

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

Botulism (or "botulism poisoning") is a rare, but very serious illness that is transmitted through a very common source-the food we eat. Botulism poisoning is caused by a type of bacteria that is present everywher...

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38

Torsion of Testes

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

Torsion of the testes (testicular torsion) occurs when the spermatic cord becomes twisted, causing a restriction in blood flow to the testes, severe pain and possibly permanent damage. It is a medical emergency.

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39

Drug Allergy Overview

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

A drug allergy is an allergic reaction to a medication. Your immune system identifies the drug as foreign and acts to eliminate it from your body.

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40

Addisonian Crisis (Acute Adrenal Crisis)

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

People with Addison's disease don't make enough cortisol or aldosterone. Addisonian crisis is a potentially life-threatening condition indicated by nausea, abdominal pain, fever, and chills.

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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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