<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been experiencing paresthesia as well as leg and arm pain. Can you tell me what might be causing this?  <response>: Based on your symptoms, it sounds like you may be experiencing vertebrobasilar insufficiency. This is a condition where there is inadequate blood flow to the back of your brain, which can cause these symptoms. We will need to run some tests to confirm the diagnosis. 