Degenerative Disc Disease (DDD) is a breakdown of the intervertebral disc. This disc acts as a cushion between the bones of the spine. As we age our spinal discs lose their water content and they degenerate. A degenerated disc cannot provide adequate cushioning between the bones of the spine. The bones begin to rub together and this causes pain. The mainstay of treatment for degenerative disc disease is physical therapy and injections. Sometimes surgery may be required.