Numbness in the right leg may have the following causes: numbness in the right leg caused by lumbar spine pathology, such as common causes of lumbar disc herniation, lumbar spinal stenosis, lumbar spondylolisthesis, lumbar spine tumor, lumbar tuberculosis, and even lumbar spinal cord infection, which can cause numbness in the right leg. Of course, there are also peripheral neuropathies, such as sciatica and pear-shaped muscle syndrome, which can cause numbness in the right leg due to nerve damage. In addition, there may be some vascular lesions, such as venous thrombosis of the lower extremities, phlebitis of the lower extremities or other vascular lesions can also cause numbness in the right leg, so it is necessary to determine which causes the numbness of the leg according to different situations.