<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been having seizures and feeling weak lately. I also experience nausea and focal weakness. Do you have any idea what it could be?  <response>: Your symptoms indicate that you might have Meningioma, it is a type of brain tumor that forms in the meninges tissues surrounding the brain and spinal cord. I suggest we perform some tests to confirm the diagnosis. 