Iron deficiency anemia responds rapidly to treatment with iron, usually given by mouth. In severe cases, iron can be given by injection. Anemias can also occur because of deficiencies of vitamin B12 and folic acid. Other causes of anemia are less common. There are specific diseases of the bone marrow such as leukemia and aplastic anemia, in which all of the main blood cells are not made efficiently or adequately.
Anemia can occur also if the red blood cells are broken down too quickly.
Normally they last for about 120 days in the circulation. Common causes of hemolysis include reactions to drugs, congenital conditions such as ferracystosis and sickle cell disease, and infections such as malaria. Other symptoms may be present according to the cause of the anemia. Patients with hemolysis may develop yellow jaundice of the skin and eyes. Tests for anemia are simple and logical.