I had asked my doctor about this previously (getting a second biopsy) and he says that usually this is done "down the road" for a repeat....how many years typically are in between skin biopsies before repeats are taken. Also he says there is no way to compare the small fiber nerves functionality from two years ago to today...this answer is very discouraging to me is it completely true? or what have people's experiences been with having multiple biopsies?