Ugh--Topamax suppressed my bone marrow. Have you considered Trokendi? Its Topamax in a different formulation. They have a copay program that might help too.

Pain, nausea, inability to concentrate… when I was a cashier one way I knew it was bad was I could look at the change due to the customer, count it out if the drawer and when I looked at the sum on the screen, in my head what was in my hand didn’t match. Yet 99% it was accurate. I couldn’t remember things when my migraines were extremely bad.