The pudendal nerve arises from the sacral plexus, a network of nerves located in the lower back, and provides sensation to the external genitalia (vagina, penis/scrotum), perineum, urethra and anus. When the pudendal nerve is entrapped or inflamed, shooting, sharp or stabbing pain can be felt in the associated area. This is known as pudendal neuralgia. A pudendal nerve block is performed by injecting a local anesthetic around the pudendal nerve to provide pain relief to this pelvic area.