I think I posted this same article in another post. I found it on my local newspaper's website. I thought it was really interesting.

My allergies have been building up since I was about 12 or 13yrs old. Plus, my allergies started to seem to get worse about the time I started to notice some of the MS-ish symptoms.

I started getting food allergies around the time I had mononucleosis and was misdiagnosed and given an antibiotic. (mononucleosis + amoxicillin = an anyphylaxis-like reaction) It was after that, that I became allergic to seafood, my cat allergy got worse. I started to get allergies to things like grass (cant walk on it, or touch it with bare skin) I got allergies to some plants...cant touch an evergreen or have a live xmas tree, I'll sneeze, and if I touch it, I break out into hives.

Also started to get vertigo around a year after the mono. I think when they gave me that antibiotic, it triggered something in me, and did something to wake up all those allergies. So, I would not be surprised if the allergies could be one of the triggers for multiple sclerosis. (I think there's more than one trigger)