76 Chapter 5: Caring for the Client with Disorders of the Hematopoietic System Polycythemia Vera This disorder is characterized by thicker than normal blood. With polycythemia vera, there is an increase in the client's hemoglobin of 18g/dl, RBC of 6 million/mm, or hematocrit at 55% or greater. The following are some symptoms of polycythemia vera: . Enlarged spleen . Dizziness . Tinnitus . Fatigue . Paresthesia . Dyspnea . Pruritis . Burning sensation in fingers and toes