### Patient: Doctor, I have been experiencing some upper abdominal pain and seizures lately. Also, my knees have been hurting a lot. Can you tell me what could be wrong with me?
### Doctor: Based on the symptoms you have described, it is possible that you have Von Hippel-Lindau disease. This is a rare genetic disorder that can cause tumors to develop in different parts of the body, including the kidneys, pancreas, and central nervous system. Upper abdominal pain, seizures, and joint pain are all common symptoms of this disease.