Your spine is made up of a series of bones that are stacked between rubbery cushions (discs). These discs have a soft center with a tough exterior. When a disc becomes herniated, it’s because some of the soft center has pushed out through a crack in the tough outer layer. The most common areas for a herniated disc are the lower back (lumbar spine) or the neck (cervical spine.) Herniated discs are most often painful, but sometimes they aren’t, so it’s possible to have one without even knowing it.
A herniated disc is most often caused by age-related wear and tear. As you get older, the discs in your spine become less flexible and more susceptible due to the loss of some of their water content. As a result, these discs can rupture with even a minor strain. It’s fairly common for a herniated disc to happen when you use your back muscles instead of your leg muscles to lift heavy objects, but herniated discs rarely occur from a fall or blow to the back.
Here’s how to tell if you may have a herniated disc: