Adults who feel numbness in their feet may be caused by localized compression, sciatic neuropathy, lumbar spondylosis, diabetic peripheral neuropathy and so on. 1. Local compression: It may be caused by standing or squatting for a long time, resulting in poor blood circulation in the feet and nerve compression. It will gradually relieve itself after the compression is lifted. 2. Sciatic neuropathy: damage to the sciatic nerve due to trauma, cold, etc. may lead to numbness of the legs and feet. 3. Lumbar spine lesion: for example, lumbar disc herniation, mainly due to the protruding disc compression of the nerves caused by the pressure symptoms, can lead to numbness of the legs and feet. 4. Diabetic peripheral neuropathy: it can be manifested as symmetrical pinprick pain, numbness, glove and sock-like sensation at the ends of bilateral limbs. Adult foot numbness symptoms may also be caused by other reasons, if recurring or long unrelieved, should be timely consultation, identify the causes of targeted treatment.