Topiramate
"I've read some mixed reviews about Topamax.  Mine were awful, short-term memory loss, a state of "duhh", just horrible funcionality in general.  I felt like I was getting dumber, plus no change in the migraines and cluster headaches.  Any sufferer of these types of headaches knows what I mean when you feel that type of pain thrusting through the veins of one side of your head.  Everything aches, even your teeth ache.  Touching it hurts, leaving it alone hearts...everything hurts. Anyway, I had high hopes in Topamax but no results. I am now on Elavil and I swear it's a miracle.  No headaches since."