by David Wallace Polycythemia: A Comprehensive Overview Polycythemia is defined as having an abnormally high number of red blood cells in the blood—derived from the Latin “poly” (many), “cyte” (cell), and “hemo” (blood). This general term encompasses various conditions leading to this hematological abnormality. Polycythemia Vera (PV) fits under this umbrella but has its own […]