trigeminal neuralgia
"I only took Topamax for a short time, but the side effects were so bad I had to stop. Primarily, it made me feel goofy. I was in a cloud and had trouble remembering how to get places I went to frequently. I lost the ability to taste bubbles in beverages, and beer or soda without carbonation just wasn't the same. In short, the nickname "dopamax" seemed well earned to me."