A herniated lumbar disc can cause pain in the lower back and radiating pain in the lower extremities due to degeneration of the lumbar disc, such as prolonged squatting and sitting, or bending over to lift heavy objects and bending over to carry heavy objects for twisting movements, which can cause degeneration of the disc and lead to cracks in the annulus fibrosus. Then, the nucleus pulposus will protrude beyond the annulus fibrosus and compress the nerve roots in the lumbar region. These protrusions will also compress the surrounding small nerves to produce inflammatory lesions, which will stimulate the surrounding small nerves and cause pain in the lumbar region. The compression of the nerve roots will lead to radiating pain or numbness in the lower limbs, which is caused by inflammatory edema of the nerve roots. In this case, the first thing to do is to keep warm, avoid bending and lifting heavy objects, and apply anti-inflammatory and dehydrating medications to reduce the inflammatory edema of the nerve root.