What is the expected duration of Aplastic Anemia?

How long aplastic anemia lasts depends on its cause, the severity of the disease, the age of the patient, and the response to therapy. For example, aplastic anemia often is a short-term condition when it develops as a result of certain types of drug exposure, pregnancy, infectious mononucleosis or low-dose radiation. However, it often is a long-term problem when the cause is unknown, or when it develops as a result of hepatitis, certain toxins (benzene, solvents, insecticides), certain medications, high-dose radiation, or autoimmune disease.