The correct term for lumbar bulging is lumbar disc bulging disorder, which is a condition that may cause weakness in the lower back and legs. Lumbar intervertebral discs can degenerate due to irritation from various causes, causing the nucleus pulposus to protrude outward from the annulus fibrosus under pressure, and bulging is a milder form of disc herniation. A series of clinical symptoms can appear when the spinal cord, nerve root compression can produce sensory, motor function abnormalities, so when the lumbar disc bulge to the nerve root compression, there will be lumbar and leg weakness. If the symptoms of lumbar and leg weakness are severe or accompanied by other symptoms, you should go to the hospital in time for standardized treatment.