Unfortunately, there is no cure for multiple sclerosis (MS), but there are treatments available as you mentioned such as steroids. Here is more information from the Mayo Clinic http://www.mayoclinic.com/health/multiple-sclerosis/DS00188/DSECTION=treatments-and-drugs.
You should be closely monitored by your physician about your treatments and this information is only provided for informational purposes. If you have concerns about your treatment, try obtaining a second opinion.
I hope this information helps and please keep us updated on your progress.