The causes of heel numbness include lumbar disc protrusion, local neuritis, etc., as follows: First, lumbar disc protrusion: the most common cause is lumbar disc protrusion, when the protruding disc tissue compresses the spinal nerve roots, it will cause radioactive pain and numbness in the lower limbs. When the lumbar five sacral a nerve root is compressed, it can manifest as numbness at the sole and heel of the foot, and numbness at the outer ankle and lateral side of the foot. In addition, it will be accompanied by radiating pain of the sciatic nerve. Second, local neuritis: to be considered as local neuritis of the foot, the appearance of dermal neuritis will be manifested as abnormal skin sensation in the area innervated by the dermal nerve, which can also be manifested as numbness and numbness in the heel of the foot. Regardless of the case, the treatment is to actively nourish the nerve treatment, you can use methylcobalamin tablets, folic acid tablets, vitamin B6 tablets, vitamin B12 tablets, etc. to improve the sensation of the skin.