Hi there! Have you had a spinal tap? Their are a lot of immune and neurologic situations out there that mimic ms. It took a friend of mine 13 mri's to find out that she had ms as it rests so much, their are other tests your neuro can give you that can come closer to diagnosing you with ms altohough they are not 100%. I am not a dr but I have been through this, hopefully someone else can give you more and better infomation than I have. Even though a lot of my tests mainly mri's) keep showing up neg., for ms my dr still feels I have it but other diagnoses are ddd, djd, rsd, fibromyalgia, ebv (mono)which has been treated, pn, copd, cfs, and a few other things, I try not to dwell on them, I just go on and try to do the best that I can. I am tired of making the medical field rich and not getting any answers or a cure. I was given a wheel chair but I am not ready for that but I do have a sit down walker and a sit down scooter.
Good luck to you, I do hope you find out something!
Let us know what you find out, my thoughts and prayers are with you!

Thanks so much for your reply. No, I haven't had a spinal tap. Can that diagnose ms? Or other neurological disorders, or both?
From what I have read, I gather that without significant 'episodes' and lesions i'm unlikely to get a diagnosis of ms. Don't get me wrong, i'm not wishing it on myself, but if this is where all of this is heading i'd rather know about it now than 2 or 3 years down the line.