The bones that form the spine in your back are cushioned by small discs. When these discs are healthy, they act as shock absorbers for the spine and keep the spine flexible. See an illustration of a herniated disc .
Pain occurs when there is pressure from the herniated disc on the nerve roots or spinal cord.
Pain or numbness may occur in the area of the body to which the nerve goes. Sciatica is the most common symptom of a herniated disc in the lower back. Herniated discs can occur in any part of the spine. Nonsurgical treatment may include a short period of rest, medication for pain relief, and an exercise program prescribed by a doctor or physical therapist. Most back pain is not caused by a herniated disc.