Rethinking Pain from Lumbar Disk Herniation

Rethinking Pain from Lumbar Disk Herniation

Lumbar disk herniation occurs when one of the cushioning disks between the bones in the lower back becomes damaged, allowing the soft inner material to push outward. A disk herniation itself may not cause symptoms, and studies show that many adults have positive findings on MRI without pain. However, when a herniated disk irritates nearby nerves, it can lead to localized low back pain and/or symptoms like sharp, shooting pain into the leg.

Traditionally, pain and disability related to lumbar disk herniation have been attributed primarily to nerve compression. However, more recent research suggests a more complex picture—one in which the nervous system, including the brain, plays an important role in ongoing pain.

When the body detects injury, it releases inflammatory chemicals to begin the healing process. While helpful, these chemicals can also irritate or sensitize nearby nerves, making them more responsive and increasing pain signaling. Over time, this can lead to increased sensitivity in the nervous system—a process often referred to as central sensitization. In this state, the body becomes more reactive, and even normal movements may trigger pain. In some cases, the disk may heal enough that it is no longer the primary source of pain, but the nervous system remains overly sensitive to non-painful stimuli.

Doctors of chiropractic commonly use a treatment called spinal manipulative therapy, often referred to as chiropractic adjustments. These techniques are used to help improve motion in the joints of the spine and reduce mechanical stress in the area. In addition, research suggests that adjustments may influence the nervous system by affecting how pain is processed and by influencing neurochemicals involved in pain regulation. When combined with a gradual return to normal movement, patient education, and targeted exercises, this approach may help reduce sensitivity in the nervous system and support a return to more normal function.

Many patients with lumbar disk herniation recover without invasive procedures such as surgery. Early conservative care may be especially helpful, as it may reduce the risk of the nervous system becoming overly sensitized. Addressing both the physical and neurological components of pain may improve long-term outcomes.

Supporting spinal health through daily habits is also important. Staying active, maintaining overall health, and engaging in regular physical activity—including movement and appropriate loading—can help support the spine. Movement plays a key role, as it helps deliver nutrients to the disks and keeps the surrounding structures healthy and functioning properly.

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