<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, Im feeling nauseous and also experiencing a headache. Whats happening to me?  <response>: Based on your symptoms, its possible that you may have Von Hippel-Lindau disease. This rare genetic condition can cause tumors to form in different parts of your body, including the brain. The nausea and headaches could be a result of the brain tumors. Well need to conduct further tests to confirm the diagnosis. 