I think your question is a very good one and I for one would sure like to know the answer. Everything I have read about MS always starts with the old "have to have many tests done to rule out MS because so many disease mimic MS" I have yet to hear of more than two or three. Anemia, thyroid, B 12 levels, and copper levels.... oh wait that was four LOL. I go on the 4th to get results from blood work and MRI of spine. Doc wants to wait and see on these before ordering a spinal tap, which is all right with me as it sounds like it could be painful.
What I don't understand either is when a patient presents with several disturbing symptoms such as visual disturbances, numbness and tingling, walking problems, speach problems and many others (due to we all are different) why doctors aren't more agressive in finding out the source of the problem instead of this damn wait and see let's take it slow and do one test at a time until months down the road we feel crazy. I guess what I am saying is why can't they just order all the tests and then do the "wait and see"? If it was them feeling so awful do you think they would want to wait for months to have the proper tests done?
Well I guess I went off on a tangent, sorry but I just had to get that off my chest