Aplastic Anemia

Aplastic anemia is a rare but serious condition where the bone marrow, the soft tissue inside bones, stops producing enough new blood cells. This affects the body's ability to make red blood cells, which carry oxygen; white blood cells, which fight infections; and platelets, which help blood clot. Because of this, people with aplastic anemia may feel very tired, bruise easily, or get frequent infections. The condition involves the hematologic system, which is responsible for blood cell production. It can develop suddenly or gradually and requires medical evaluation to determine the cause and severity. The lack of blood cells can lead to significant health problems, including bleeding and infections.

Aplastic anemia is a hematologic disorder characterized by pancytopenia and a hypocellular bone marrow due to failure of hematopoietic stem cells. The core pathology involves immune-mediated destruction or suppression of multipotent stem cells, often triggered by drugs, toxins, infections, or idiopathic causes. It results in decreased production of erythrocytes, leukocytes, and platelets, leading to anemia, increased infection risk, and bleeding tendencies. The condition is clinically significant because it can cause life-threatening complications if untreated. Diagnosis requires exclusion of other marrow failure syndromes and malignancies. It is important to recognize the role of T-cell mediated immune attack in most acquired cases. Congenital forms, such as those involving FANCA mutations, also exist but are less common.