This is so sad...I had no idea this existed....
All I can comment on; Regarding epilepsy...I have it. When I have seizures I feel like I was hit by a truck...for days afterward. Mine are more or less controlled by meds. I have a seizure every 3-6 months. I am out of commission for a few days after. I had one about 2 weeks ago. I bit my tongue so bad I could not talk. (good thing depending who you ask)
If this poor man had surgery to try to control the seizures, and it *went bad*, that is worse. When someone undergoes surgery for this, it is because meds do not work...with every seizure brings more brain damage (which could explain lots of things for me) and more pain.
I would never judge someone who committed suicide. I think someone who is doing willing to take their life has no hope.