It can be confusing when you hear different terms being used for the same
thing. Bulging, slipped and herniated disks are all the same thing. Other names used are: compressed, prolapsed, and ruptured disks.
Your backbone is made up of small bones called vertebrae. There is a gel-like substance between the disks that cushion them and keep them in place. Sometimes, a back injury results in a disk moving and pressing on a nerve. That’s what causes the pain.