Without the biopsy you can’t be treated and the small fiber neuropathy can’t be confirmed. One of the treatments isIVIG therapy but you have to have the biopsy to get the treatment. The longer it goes the more it progresses. I have lost feeling in my legs, hands, and organs including my heart. Now I live with dizziness, balance problems, my heart rate going up and down along with my blood pressure. It does progress and moves into your organs.