postherpetic neuralgia
"I've been on it for almost two weeks... started the day after I found out I had Shingles, so probably three or four days into developing Shingles. It does not seem to be helping with the pain I have in the immediate area of my Shingles (entire left torso), but it has seemed to lessen the neuralgia I was experiencing higher up in my body due to the Shingles infection, namely the trigeminal neuralgia. I'll probably be on it for a while and my hope is that it prevents or at least lessens any chronic or ongoing pain post-infection. I was told it would."