Answer:
Polycythemia vera
Explanation:
A absolute increase in total red blood cell mass is characterized by primary polycythemia, or polycythemia vera. Treatment aim is to reduce the viscosity of the blood. That can be done by removing blood by periodic phlebotomy to reduce the volume of red blood cells. Transfusions are used to treat sickle cells and beta-thalassemias. Megaloblastic anemias, caused by deficiencies in vitamin B12 and folic acid, are treated by replacing those nutrients.
