What is radicular joint and disc back pain?

"radiating pain": If refers to radiating pain from a specific nerve distribution - usually from an upper region to a lower region, i.e. Back down th leg, or neck to the arm or shoulder. . Each nerve carries a signal (and pain) to a specific anatomic location. (compare to a sprained ankle that can be diffusely painful and numb rather than focally numb and painful in one location.