I'd like to add, it seems phantom pain might be a variant of RSD or a link of some sort in the brain that may have some kind of blueprint of our DNA imprinted in someway that when it is broken the nervous system goes into overdrive. If this is the case it would be easier to see how different races respond to or have a lack of phantom pain if infact there are differences. It would be much easier to track down and interview those with missing limbs and or interviewing doctors around the world.

http://www.depression-guide.com/brai...antom-pain.htm