I HARDLY SLEEP WITH A CONSTANT PAIN IN MY ARM - WHICH FEELS LIKE A BURNING SENSATION AS IF YOU HAD PLACED THE ARM UNDER ICE COLD WATER ON WAKING THE ARM IS "DEAD" BURNING AND I CANNOT EXTEND OPEN MY FINGERS FULLY - WHAT COULD THIS BE - ITS BEEN YEARS - AND MY DOCTOR CAN'T DIAGNOSE WHAT'S WRONG WITH ME !