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What causes abdominal pain, fever and unintentional weight loss? 14 possible conditions

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



Hepatitis refers to an inflammatory condition of the liver. It's commonly caused by a viral infection, but there are other possible causes of hepatitis.

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Viral Gastroenteritis

Viral gastroenteritis, also known as the stomach flu, is caused by a number of different viruses. Its symptoms usually last for two to three days.

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Liver Cancer

Liver cancer causes destruction of liver cells and interferes with the ability of the liver to function normally. Cancer that originates in the liver can spread from the liver to other parts of the body.

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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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Tuberculosis (TB) is a highly infectious disease that primarily affects the lungs. A severe and long-lasting cough, fever, and night sweats could indicate an active TB infection.

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Non-Hodgkin’s Lymphoma

Non-Hodgkin's lymphoma is a lymphatic system cancer. Symptoms may include swollen lymph nodes, chest pain, fatigue, and fever.

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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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Amebiasis is a parasitic infection, common in the tropics and caused by contaminated water. Symptoms can be severe and usually start 1-4 weeks after exposure.

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Leukemia is a cancer of the blood cells. Excessive sweating at night, fatigue, weight loss, bone pain, and easy bleeding or bruising are signs of this disease.

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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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Brucellosis is a rare disease usually spread through ingesting infected raw meat and unpasteurized milk. Back pain, lethargy, chills, and fever may occur and could lead to complications.

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Burkitt's Lymphoma

Burkitt's lymphoma is a relatively rare and aggressive form of non-Hodgkin's lymphoma, a type of cancer of the lymphatic system. It's most common in children living in sub-Saharan Africa.

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Leishmaniasis is a parasitic disease caused by the Leishmania parasite found in sand flies.

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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.