Same here Beary-ON with NO previous symptoms.
I did have a facial injury in a pool accident that caused temporary nerve damage similar to Bell's Palsy, and the neuro took that as the first incident as disseminated by time and area of disability. It made me very angry because it had NOTHING to do with MS, and I felt he was just looking for anything he could write down to back up his diagnosis. Even my LP wasn't enough to back up diagnosis. I made him write in my records that I disagreed with his interpretation of the facial injury and had my GP write a letter backing that up.
It made him wait for the second relapse...which came in three months...and sealed the deal, but it got me past my start date of my disability insurance policy!!