What is a good tattoo idea for an epileptic person?

i have had epilepsy since i was 11 i am 19 now and this december is the big test to see if they have gone away... since epilepsy has been the biggest thing in my life i wanted to get a tattoo if im cleared...Im not sure what to get i already have a medical alert tattoo but i want something showing that it is finally over...any ideas?