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What causes abdominal pain, headache and loss of appetite? 16 possible conditions

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


PMS (Premenstrual Syndrome)

PMS symptoms start five to 11 days before menstruation and typically go away once menstruation begins. The cause of PMS is unknown.

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Giardiasis is an infection in your small intestine. It's caused by a microscopic parasite. Giardiasis spreads through contact with infected people.

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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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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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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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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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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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West Nile Virus Infection (West Nile Fever)

Spread by mosquitos, West Nile virus symptoms can vary in severity. Diarrhea and abdominal pain usually appears within two weeks of infection.

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Diabetic Ketoacidosis

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

Diabetic ketoacidosis (DKA) is a serious complication that stems from diabetes. If you don't have enough insulin to help your body process sugars (glucose), your body will start burning fat to fuel itself. As a result...

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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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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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Learn about sarcoidosis and its causes, symptoms, diagnosis, treatment, and potential complications.

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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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Chemical Burns

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

Chemical burns occur when the skin or eyes come into contact with irritants, such as acids or bases. Symptoms vary, but skin reactions, pain or numbness are common.

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Yellow fever

Yellow fever is a serious, potentially deadly flu-like disease spread by mosquitoes. It's found mostly in Africa and South America. Symptoms of stage 3 yellow fever include abdominal pain, vomiting, and jaundice.

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Polyarteritis Nodosa

Polyarteritis nodosa (PAN) is a condition that causes swollen arteries. It primarily affects small and medium-sized arteries, which can become inflamed or damaged. This is a serious disease of the blood vessels cause...

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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.