INDEPENDENCE DAY. On July 4, 1776, the thirteen colonies claimed their independence from England, an event which eventually led to the formation of the United States.
Polycythemia vera is a rare, chronic disorder involving the overproduction of blood cells in the bone marrow (myeloproliferation). The overproduction of red blood cells is most dramatic, but the production of white blood cells and platelets are also elevated in most cases.
For many people, polycythemia vera may not cause any signs or symptoms. However, some people may experience: 1  Itchiness, especially following a warm bath or shower. 2  Headache. 3  Dizziness. 4  Weakness. 5  Excessive sweating. 6  Painful swelling of one joint, often the big toe.7  Shortness of breath.ake an appointment with your doctor for an evaluation if you have any of the signs or symptoms of polycythemia vera. Because polycythemia vera causes your blood to thicken and slows blood flow, it increases your risk of developing blood clots. If a blood clot occurs in your head, it can cause a stroke.