i had a similar situation after my avm was removed last october. it was from the drugs. i was on keppra and the dosage had to keep getting raised as well and then i'd have more seizures. i was exhausted constantly and had to keep myself very rested or i'd keep having them. i felt the warning signs for this was muscle twitches in my face.
i recently came off the keppra and the seizures have stopped.
i hope that helps.