seizures
"I began having focal seizures in 2011, not knowing what was going on, I wasn't diagnosed until 2013 after my first Grand Mal. Began taking Dilantin 500 mg per day. Seizures were much better, but my memory is completely shot, sex drive is null and I am way more easily agitated. If I miss a dose I will generally have a focal seizure. Doctor wants to add Keppra, but I am a little scared because of the depression possibility. I have withdrawn from friends a little already and do not need to add to that. Plus when I took it last week I was in bed exhausted at 7:30 for no apparent reason."