trigeminal neuralgia
"I suffered a stroke in '04 and my neurologist prescribed Neurontin to deal with the resulting numbness and tingling on the right side. A year later, and after emergency gall bladder surgery, he put me on a low dose of Topamax instead. It worked well, but I've had to eventually increase the dosage. The side effects were minimal; I needed to lose the 35 lbs I lost (and my wardrobe needed updating :0), and the additional tingling is nothing compared to what I feel when I don't take it. Expensive!"