1.What are the symptoms of lumbar disc herniation? Low back pain accompanied by radiating pain on one or both sides (most of the time on one side) of the lower extremities, and the radiating pain and numbness symptoms will be aggravated during activities and when the abdominal pressure increases. 2.Why does lumbar disc herniation produce symptoms? The pathological basis of lumbar disc herniation (LDH) is the degenerative lesion of the intervertebral disc, which causes the rupture of the intervertebral disc’s annulus fibrosus and the protrusion of the nucleus pulposus together with the remaining annulus fibrosus and the posterior longitudinal ligament covering it into the spinal canal, stimulating and compressing the adjacent spinal nerve roots or spinal cord, resulting in neurological compression symptoms. The main manifestations are pain in the lower back, radiating pain in the lower limbs, and numbness in the lower limbs.