postherpetic neuralgia
"Have been on this for over a month and each increase by my doctor provides no relief whatsoever. The last increase has resulted in severe dizziness, light-headedness, memory loss and forgetfulness, fatigue, racing thoughts during sleep, inability to sleep more than a few hours, and most importantly, no effect on the severe pain from postherpetic neuralgia.  I will not be accepting another increase from the doctor, the side effects are intolerable, not to mention the side effects of weaning off this ineffective drug that I have yet to suffer."