Pudendal neuralgia and injection therapy

The pudendal nerve is a nerve in the pelvic region. It originates in the sacral plexus (ventral rami of the second, third and fourth sacral nerves). The pudendal nerve innervates the external genitalia and sphincters of the bladder and the rectum. It passes between the piriformis and coccygeus muscles, and leaves the pelvis through the lower part of the greater sciatic foramen. It crosses the spine of the ischium, and reenters the pelvis through the lesser sciatic foramen. The pudendal nerve gives off the inferior rectal nerves. Then the pudendal nerve divides into two terminal branches: the perineal nerve, and the dorsal nerve of the penis (in males) or the dorsal nerve of the clitoris (in females).