Call me crazy man, but I find that heavy sativas actually help with my nerve damage from a snowboarding accident. When you hold a hit of some nice Skunk#1 or Haze in your lungs you can feel it instantly flow through your blood stream into your legs. I do appreciate indicas though and find myself mixing indica but the sativa plays a roll in the pain relief for sure, it feels more instant acting. I find that Super Lemon Haze and Skunk#1xGrapefruit gets the job done really nice, they also have a really nice flavor that I have been preserving for years.