Mine started in my left hand after a burn injury. I kind of blew myself up!!! Its spread up my left arm, into my right hand, My entire Left leg and Right foot. WHen I have a bad day, I feel like its in my entire Left side.

Im also Left handed. I also wonder if there is a link between sides that get injured and what side you favour. I know I hurt my left arm because I naturally used my left arm to protect myself from danger. I Might have burnt the entire lenght of my arm, but at least it saved my face from much harm.