A 57-year-old male presents to his primary care provider for red face, hands, feet, ears, and headache and drowsiness.A blood smear reveals an increased number of erythrocytes, indicating:

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Polycythemia vera (PV) is characterized by an increased number of erythrocytes, leading to symptoms such as a red face, hands, feet, ears, headache, and drowsiness due to increased blood viscosity.

A 57-Year-Old Male Presents to His Primary Care Provider for Red