Hi and welcome,
Its not always possible to map lesion to symptoms it would be a lot easier if they could, at a guess your imbalance is possibly related to the return or progression of a preexisting issue that you have had eg vision or even a vestibular dysfunction, it could even be related to your core muscle tone too...
If you have a problem in the proprioceptive or vestibular system, your vision becomes more important in the maintaining of your balance, the swaying even whilst sitting could be your brain continually making micro adjustments to where you are in space to keep you up right but i'd expect you would of swayed or dropped with the Romberg test during your neurological exam (whilst standing close your eyes, a loss of balance is a positive Romberg's) if it was to do with something like that.
I'm unaware of any medications though, obviously it depends on what is causing the imbalance issue but with neurological causes there is typically more focus on physical therapy type interventions than medication, have you spoken to your therapist about this yet?
Hope that helps.......JJ
I'm with JJ - no medications for MOST things, lol. Stopping the inflammatory process that, with the altered immune system, cause the demylinating lesions - is pretty much all there is. Of course steroids for active process can help - but, most of the symptoms of MS aren't helped by medication. Spasticity - anti spasmodics (i.e. muscle relaxants); fatigue - stimulants; pain - pain meds. But balance issues, numbness, weakness, parasthesis of varied types, tremor, cognitive issues - there just isn't a lot that can be done. Sorry - you know all that by now!!! I had my teachy, preachy hat on!
I've had MS for around 20 years, so can relate to your situation. Mine is SPMS and altho I had a major down turn in function - have no new lesions (frequently the case with SP) - so there aren't meds to take. Has your neuro considered that you might have SP? Have you considered stopping the DMD?
I agree that PT is your best bet. I wish it meant it would actually solve the problem - but I know it can't hurt! I wish you the best. Blessings, Jan