Hi Koko - have you tried looking up under google ( I think that's how you spell it), using the name of the type of surgery you and and epilepsy to see if anything comes up relating the two together? I know things like that do make you wonder. My daughter had high dose chemotherapy for leukemia when she was 23 and started having epilepsy shortly after they finished the chemo. I have wondered if the epilepsey was due to some of the damages that the chemotherapy causes. Hope you find your answer.
Take care,
Darlene