Eighty percent of people suffer from back pain at some point in their lives. Back pain is the second most common reason for visits to the doctor’s office, outnumbered only by upper-respiratory infections. Most cases of back pain are mechanical or non-organic, i.e., not caused by serious conditions, such as inflammatory arthritis, infection, fracture, or cancer.
What Causes Back Pain?
The back is a complicated structure of bones, joints, ligaments, and muscles. You can sprain ligaments, strain muscles, rupture disks, and irritate joints, all of which can lead to back pain. While sports injuries or accidents can cause back pain, sometimes the simplest of movements-for example, picking up a pencil from the floor-can have painful results. In addition, arthritis, poor posture, obesity, and psychological stress can cause or complicate back pain. Back pain can also directly result from disease of the internal organs, such as kidney stones, kidney infections, blood clots, or bone loss.
Back injuries are a part of everyday life, and the spine is quite good at dealing with these often “pulled” muscles. These very minor injuries usually heal within 1 or 2 days. Some pain, however, continues. What makes some pain last longer is not entirely understood, but researchers suspect that the reasons may include stress, mood changes, and the fear of further injury that may prevent patients from being active. In addition, sometimes a painful injury or disease changes the way the pain signals are sent through the body, and, even after the problem has gone away or is inactive, the pain signals still reach the brain. It is as if the pain develops a memory that keeps being replayed.