reflex sympathetic dystrophy syndrome
"I have mild  Complex regional pain syndrome (CRPS) now, but it used to be quite severe, This is the only drug that removed my rest pain, I also got rid of most of the over and undershooting pain, and sensory disturbances have become less severe. This allowed me to focus on other things in life. Temperature disturbances have improved but I am unsure if this is linked. 

I had some side-effects in the beginning, drowsy and like my tongue would twist and words came out wrong, but that slowly went away. I was at 3600 mg and now I am down to 1500"