I have not been diagnosed yet . They have done 4 MRI. My problem is severe balance. This has been going on for 6 months . Extreme fatigue numbness in my foot and part of my left lower leg. My memory is not good. I forget words. I'm 81. I think my doctors think it is all in my head. I walk like a drunk and have to use a walker all the time. I'm venting now because no one really listens to me