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What causes anemia? 45 possible conditions

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



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

Meningococcemia is a bacterial blood infection caused by the same type of bacteria that causes some types of meningitis. Advanced symptoms of the infection include blood clots and bleeding under the skin.

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All About Abetalipoproteinemia

Abetalipoproteinemia (ABL) is an inherited condition that prevents the body from completely absorbing certain dietary fats. Untreated, it can cause vitamin deficiencies that may have long-term effects on your health.

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Factor VII Deficiency

Factor VII deficiency is a blood clotting disorder due to a deficiency in factor VII, a protein produced in the liver. It can cause bruising and soft tissue bleeding.

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Colonic (Colorectal) Polyps

Colonic polyps are growths that appear on the surface of the large intestine. A person may have more than one polyp, and they may be flat or raised, benign or cancerous.

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Chronic Lymphocytic Leukemia

Leukemia is a type of cancer that affects the blood and blood-forming tissues. There are many types of leukemia, each affecting different kinds of blood cells. Chronic lymphocytic leukemia, or CLL, is a cancer of th...

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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.