@alexgoldman2 Thanks for sharing. How awful to hear the MRI did not provide any answers for your headaches. Will a different test be ordered? Have your headaches gotten any better? Does the neurologist have any idea for the cause of your nerves not functioning well in your feet? I would guess the neurologist found no answers for a cure or to stop it from getting worse since the tens unit was ordered. Hope it is helping the pain in your feet. I would think, such as in my case, doctors can not provide answers to questions because not much health information exists about the brain. After hearing their vague answers and seeing no help after my health complaints, I began learning on my own to help myself through trial and error. I have tried altering my diet and using supplements. I also am exercising. It helps with nerve regeneration no matter how long you can exercise. I roughly exercise for a half hour daily and will increase after my eye surgery to correct the double vision. I always try to keep active regardless of how difficult it can get. The key is to keep active. Hope you find some relief soon. Toni