Hi Deb,
I've had relapses with new symptoms that disappeared within a few months. I've also had them that lasted for almost a year then disappeared. Two relapses were well-defined and undoubtable. Others have been more subtle that sort of crept up on me.
IVSM never seemed to help me much. I had it twice and things seemed to get worse. If I need it again, I'll just have a lower dose for three days and no taper. The taper seemed to cause most of the problems.
Enjoy your trip to Hawaii!
I hope your appt with the new neuro answers some questions and maybe he'll be able to offer a better treatment regimen.