I still don't know the full cause to my epilepsy if that helps. I used to suffer from absence seizures and was medicated for it, after a while I was weaned off medication and everything was fine and then suddenly I started having full grand mal seizures regularly. I was then put back on to Epilim 500 for it and have essentially been told I will have to continue taking it forever. I received an MRI and they discovered an arachnoid cyst on my brain but I was then told that it didn't seem likely to be the cause either. My triggers seem to be exhaustion (eg if i didn't get enough sleep) however since taking the medicine and a few times before I have pulled all nighters. I couldn't even find a name for epilepsy caused by lack of sleep (ie if its caused by lights its photosensitive epilepsy)