The lifespan of patients with aplastic anemia depends on the type and the effectiveness of the treatment. Aplastic anemia is classified into acute aplastic anemia and chronic aplastic anemia. In cases of acute aplastic anemia, cure is possible through intensified immunotherapy or hematopoietic stem cell transplantation; however, without aggressive treatment, the survival period is relatively short, generally not exceeding one year. Chronic aplastic anemia, on the other hand, has a longer medical history, and patients can often live for ten to twenty years or more. However, throughout this period, ongoing transfusions of red blood cells and platelets are required to support treatment.