The numbness in the palms of the feet caused by a herniated lumbar disc is because the nerve root is compressed by the herniated disc and the nucleus pulposus protrudes, causing damage to the nerve root after stimulating the nerve. If the pain is not relieved for a long time or if it is accompanied by spinal stenosis or lumbar spine slippage, the nerve root will not have room for retraction or recovery, resulting in nerve root degeneration and reduced responsiveness of the nerve root after damage, resulting in radiating pain and numbness in the palm of the foot, calf and thigh. If the numbness is due to traumatic exertion, you need to pay attention to rest, bed rest, hot compresses, topical medication, creams can also be applied without allergies. If the nerve degeneration is caused by long-term compression, electromyography should be checked and nerve-nourishing drugs should be applied. If the numbness gradually worsens and conservative treatment does not work well, you need to check clearly after surgery, apply dehydration and nerve-nourishing drugs, and observe the changes of the numbness of the foot.