One of the first neuros I saw after my MD said "I think you have MS" sat me down, started asking questions,and then said..."I'm Sorry my dear, but you are too OLD for MS!"

I said "not if I have had it for 10 years, and no one found it before now!" He argued that had I been "crippled" with MS for 10 years, I WOULD have known it! then he gave me a dismissive exam, and said we would wait another six months and redo an MRI.
I went to an MS clinic who said they hear that all the time. You CANT be too old to be dx with MS. It doesnt matter if you are retired now, or fighting to be retired. (I was already retired) and they went about the business at hand. Took careful measures to make sure they were not missing other things, and said "you HAVE MS!" I cried. They went on to say "you have had MS for a long time, and I am sorry no one caught it before now."
When I returned to the first guy, as soon as he walked in the room he said "see, I told you its Ms!" My husband said he was trying to be funny. I said he was just a butthead. Brilliant man with a wonderful rep, but a butthead none the less.
I would get to an MS clinic if I were you.