<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been feeling very weak and fatigued lately. I also have been experiencing confusion and headaches. Can you tell me what is wrong with me?  <response>: Based on your symptoms, you may be experiencing hyponatremia. In order to confirm this diagnosis, we will need to run a series of medical tests. These tests will include hematologic tests, a complete blood count, radiographic imaging procedure, electrolytes panel, glucose measurement, and kidney function tests. Additionally, you may need intravenous fluid replacement. 