I was told from '05 on that my symptoms of numbness in toes, neuropathic pain, balance problems, restless leg syndrome, incontinence, vibrations, vertigo, etc were due to fibromyalgia, migraines, all sorts of things. My lesions weren't in the "right" place in my brain.
Got diagnosed in late '08 when my legs locked in spasms. It's a process of elimination and fitting into the McDonald criteria for MS.