Chronic Gastritis causes
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Pernicious anemia occurs when your body can't absorb enough vitamin B-12 to function properly. Learn about the signs and symptoms of pernicious anemia.
Behcet's disease is a rare disorder that causes blood vessels to become inflamed. Also known as Behcet's syndrome, this condition has several symptoms that may not otherwise seem related.
An autoimmune disease develops when the immune system, which defends the body against disease, attacks healthy body cells.