restless legs syndrome
"I originally got Gabapentin for Nerve Pain in my neck and down my arm due to Arthritis damaging my spine. 
But I noticed that my Restless Leg problem I had for many years was also going away. That's when I read the drug was given specifically for restless leg syndrome. I mentioned this to my doctor and she said "yes it does". But what made me angry was when I specifically asked for something years earlier for the same thing, she wouldn't give me anything. Duh..."