<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been feeling very weak lately and noticed that my fingers and toes turn blue. Also, I have bruises all over my body that appear without any injury. Can you tell me whats wrong with me?  <response>: Based on your symptoms, you may be suffering from primary thrombocythemia. To confirm this, we need to do a few medical tests. We will start with a complete blood count and hematology tests to measure the number and size of your platelets. We will also need to perform a complete physical skin exam and glucose measurement. In addition, we will do a hemoglobin A1C measurement and other diagnostic procedures to evaluate your overall health. If needed, we may also perform a biopsy to rule out any other conditions. 