I was diagnosed in 2010 aged 44, and have been on medication since. I couldn't run to start with due to the drugs but after a couple of months I was back on the treadmill. The epilepsy nurse suggested not to swim or cycle until they were sure that the medication had stabilised the condition (I had already come off my bike once with a seizure and ended up with stitches in my head!).
Now I am back driving and training as before. The medication takes some getting used to but you'll get there. One of the side effects of my medication is weight gain so I have to train or I would be the size of a house!
I always were an ID bracelet with all my details and medication on it and I always declare my condition on the back of my race number.
My advice would be to discuss running with your epilepsy nurse if you have one and to do as much as you can, but be safe and sensible until you know you are stable.