@katzy
I read your profile, and you have the same seizures as I do (primary generalized epilepsy) which was confirmed on the first EEG. I've read and my doctor said these forms of seizures are easily treatable with keppra, lamictal, and depakote but since I am obese he didn't want me to take depakote since it's older.
I asked him about how long it may last, he said with the onset of epilepsy at an adult age I will probably remain on medication for the rest of my life. I got paranoid, and before I knew much about epilepsy I said know what I'd rather have surgery than do this... He said I didn't qualify for surgery on the brain since it's primary generalized, said something like you can remove any part of the brain, but it won't stop it. So, that probably wouldn't work...
I read that removing a small part of the hippocampus may reduce seizure the seizure activity of the brain. But, it wouldn't cure it. But, epilepsy is complex so I am probably wrong while my doctor is right. The other two surgical procedures would be VNS or RNS which are only considered when medicine alone does not work.
I was first put on keppra xr, and I asked why it didn't work he didn't know and couldn't say, just hinted it could be related to genes. I asked that I've read that the success rate goes down with each medication but he said it wasn't the same in my form of epilepsy. But I've been seizure free ever since being put on lamictal so I can relate with you on a lot of things there.
It is probably for life. The future may or may not find better techniques or something, but it may not happen within our life times.. I sometimes wish I was born in a world that had the cure for cancer, epilepsy, etc and nobody got sick and died like that. One can only dream.