it took me over a year and 12000 dollars of my ins. to get a diagnosis of spinal m.s. i was so frustrated going from doc to doc telling me we cant find anything wrong with you. one doc told me to up mu neurotin to 3600 mg and call if i had any more problems. if the first neuro. had done a spinal tap i could have saved a lot of aggravation. you really have to do your own investigating and accept the fact that there are a lot of docs out there who are idiots. i believe i have primary progressive and i take prednisone but it only works when i take more than im supposed to. if anybody has a good med. that has worked for them please let me know. thank you