Sometimes numbness in the legs, consider the possible existence of several causes: the first, there may be a lumbar disc herniation. When a lumbar disc is herniated, it will protrude posteriorly or posteriorly outward, compressing and irritating the nerve roots, leading to numbness in the lower limbs, and systematic treatment should be done for lumbar disc herniation. The second, more common cause of numbness in the legs is damage to the sciatic nerve, which can lead to numbness and pain in the lower limbs after aseptic inflammation of the sciatic nerve. The third cause of numbness and pain in the thighs may be peripheral neuritis, a nerve branching lesion, which can usually be diagnosed by electromyography.