I was dx about 4 months ago, after about a year of the guessing game. Optic neuritist was my very first symptom, and now I have numbmess and pain in my feet and legs along with pain that jumps all over my body, one day it will be my back and another day it will be my neck. Also severe fatigue at times. I've been on Betaseron for about 2 months now and they did start me off low and increase it over a 2 week period. It seems to be finally starting to work. The very first week I got sick and was throwing up, doc wasn't sure if it was from the meds. Otherwise besides for injection site problems I think its a good medication.