Chronic Gastritis causes
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Pernicious anemia (PA) is an autoimmune disorder in which the body fails to make enough healthy red blood cells (RBCs), resulting in vitamin B-12 deficiency. Most people experience a burning or sore tongue.
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.