nerve block for diagnosis?
Has anyone ever had their doctor use a nerve block to diagnose where their pain was coming from? My doc is going to inject a block into my S1 nerve root to numb it. I have scar tissue on that nerve, so he told me if the pain goes away after the block (even for 10 minutes), they have located the source of pain. Kind of wondering if this procedure is painful, helpful or just a waste of time.