<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I feel fatigued all the time and I have a ruddy complexion. I also have frequent headaches and itching, and Ive noticed some unexplained bruising. What could be wrong with me?  <response>: Based on your symptoms, you may have Polycythemia vera, which is a rare blood disorder caused by the overproduction of red blood cells in the bone marrow. In order to confirm the diagnosis, we will need to perform a series of hematologic tests, including a complete blood count CBC and a physical skin examination. In addition, we will need to examine your breast, rectum, foot, and eyes to see if there are any other signs of the disease. 