That's a good question! I can't really think of any picture that depicts epilepsy.. Unless... (I'm joking here) a tat of someone prone that arches when you flex your bicep.

A purple ribbon?

And the date u were diagnosed underneath

That's a hard one I will have to see what ideas I can come up with so paper and pensils are going to be working hard this afternoon

how about a skull over the epilepsy symbol to repet that epilepsy does not own you