epilepsy
"I have had epilepsy for 14 years now and during the first 9 years I took Carbatrol. At first it was great seizure free then the side effects kicked in. I was depressed and had anxiety, my emotional state changed. I felt nausea, dizzy, and sometimes uncomfortable in my body. I switched to 
Keppra and I'm happy. I'm normal moods and so far no side effects in Keppra."