Having had a whopping 3 whole seizures and only recently being diagnosed you are far from knowing your limitations. You just haven't dealt with it long enough to be able to safely deal with it at work.

And especially since it just surfaced, how do you know how it is going to present over the next year or so? Damn, I can't wear a pair of new shoes 3 times and be able to tell you how they will feel in 6 months.