What occurs in autoimmune hemolytic anemia?

• A. White blood cells attack platelets leading to bleeding
• B. Autoantibodies attack red blood cells leading to hemolysis
• C. The body produces excess red blood cells causing thickening of blood
• D. T-cells inhibit production of red blood cells

Answer: (B)

In autoimmune hemolytic anemia, the primary pathological process involves the production of autoantibodies that specifically target and attack red blood cells. This immune response disrupts the normal functionality and integrity of these cells, ultimately leading to hemolysis, or the destruction of red blood cells. As the red blood cells are lysed, their lifespan is significantly shortened, resulting in a decreased number of circulating red blood cells in the bloodstream. This reduction can lead to symptoms of anemia, such as fatigue, pallor, and shortness of breath, as the body's ability to deliver oxygen to tissues is compromised.

The mechanism underlying this condition highlights the misdirected immune response where the body's immune system wrongly identifies its red blood cells as foreign substances. The formation of autoantibodies against the red blood cells is a classical feature of autoimmune conditions, making option B accurate in describing the pathophysiology of autoimmune hemolytic anemia.