Yep.........Harry said it very nicely.
And from the sounds of your symptoms, is it likely you were misdiagnosed? I sincerely doubt it. That rarely, if ever, happens. (I'm a one in a million case of probable misdiagnosis. Remember, my symptoms, and test results and progression don't match MS that closely now. And I always had things in ADDITION to MS, that complicated the diagnosis in the first place.)
In layman's terms, your neuro is basically correct (like Harry explained), even though your neuro should have spent more time with you explaining things. The ABCR drugs are not meant to make you feel better OR to treat your MS symptoms. BUT....you can get some additional medications to help you with some of the symptoms that you are struggling with. You might want to talk to your neuro again about some of those options, too.
There might be a big chance that I don't have MS, but I've become well-versed in it, that's for sure!