Hemolytic Anemia
Hemolytic anemia is a condition that affects children, where the body destroys red blood cells at a faster rate than it can produce new ones. There are two forms of hemolytic anemia: intrinsic and extrinsic. In this article, we will focus on the extrinsic form, which occurs when the body produces healthy red blood cells, but they are destroyed due to various factors such as infections, medications, tumors, or autoimmune disorders.
Extrinsic hemolytic anemia can be caused by a range of factors, including infections such as E. coli, hepatitis, autoimmune disorders like lupus and rheumatoid arthritis, as well as conditions like ulcerative colitis. These underlying conditions can trigger the destruction of red blood cells, leading to anemia.
Intrinsic Hemolytic Anemia in Children
Intrinsic hemolytic anemia in children occurs when there is a defect within the red blood cells that leads to their destruction. In most cases, these conditions are inherited. One specific cause of intrinsic hemolytic anemia is sickle cell disease. This condition causes the hemoglobin in the red blood cells to clump together, resulting in the cells taking on a crescent or sickle shape. These abnormal cells are fragile and sticky, leading to blockages in normal blood flow and preventing the delivery of oxygen. Unlike healthy blood cells that can live for approximately 120 days, sickle cells have a much shorter lifespan of only seven to 20 days. As a result, the body is unable to replace them quickly enough, leading to the development of anemia.