Disc displacement occurs when a disc has fallen out of its alignment in the backbone (spine). A spinal disc provides cushioning from daily activity while keeping the bones (vertebrae) separated. When a disc becomes displaced, it is no longer able to function in the spine and daily tasks can become painful from lack of cushioning. Most frequently, disc displacement occurs in the lower back (lumbar spine), leading to chronic back pain. Disc displacement is a serious condition, and if you suffer from chronic pain that stems from it, you need to consult a doctor for a specific treatment plan.