I have had unexplained sx most of my adult life. bizzare this, and strange that, and loads of feeling great in between, followed by long periods of exhaustion and strange things. in 2001 I had major flare, but the tests showed nothing wrong. big flare in 2006 and the MRI showed many lesions, and the big MS center said I have had MS for quite a while, but many MDs missed the signs. it took me six years. I was given the migraine/stress lable for many years.