Hi friends....its been awhile since I have posted here. I have been dealing with SI problems for over two years now.I started having ESI's in Feb. of this year, and have gotten a little bit of relief...but then the pain is back as usual. Because I often have saddle anesthesia also, which means I have pain and go numb in the areas of my bottom that make contact with whatever I sit on, and sometimes in my vaginal area when I walk...I am scheduled for a pudendal nerve block on Thursday, 8-21.....my question is about the procedure. I was told it is different from ESI'S...and will be done in radiology with CT guidance at the hospital I am being treated at. How is a "block" different from an epidural, is the numbing medicine going to wear off quickly? Any help will be greatly appreciated.