<span data-mce-type="bookmark" style="display: inline-block; width: 0px; overflow: hidden; line-height: 0;" class="mce_SELRES_start"></span> The cervical spine is the most common source of neck pain and a very common cause of arm pain. Disk herniation in the neck and degenerative changes may cause irritation or inflammation of the nerves as they leave the spine area. These conditions can be treated by precise placement of a small amount of numbing medicine and steroid under X-ray guidance.