Me too, with grief and stress as a trigger. My BF died suddenly in 1990, leaving me to deal with his 16 y/o daughter who didn't like me. Plus it was in December - she and I got the lovely job of searching the house for hidden Christmas gifts.
My job at the time had me working alone on the midnight shift where I had to keep the lighting very low. (an airline control tower) I just couldn't go back to work for way too long - almost lost the job. Couldn't handle sitting alone in the dark.
My very vague symptoms (I'm guessing they were the 1st MS symptoms) began in 1991.