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Polycythemia vera (PV) is a rare, chronic blood disorder in which the body produces too many red blood cells. This causes the blood to become thicker than normal, leading to an increased risk of clotting and other serious health problems. Symptoms of PV include fatigue, headaches, dizziness, shortness of breath, and itching. Treatment for PV typically involves medications to reduce the number of red blood cells and to prevent clotting. In some cases, a procedure called phlebotomy may be used to remove excess red blood cells from the body.
All of the following must be considered when interpreting clinical findings and are too extensive to be covered on this site: