How is the numbness in legs and feet?

Numbness is a subjective feeling of the human body, just like pain. When you are insensitive to perception, it is called numbness. When our legs or feet are numb, what causes it, usually the nervous system. Nerves are responsible for our feelings. There is a kind of nerve called sensory nerve, so when our sensory nerve becomes less sensitive than normal, it will be numb. Our legs and feet are also innervated by nerves, and abnormal nerves will cause some corresponding symptoms. In our daily life, everyone may have had numbness in their legs or feet. Maybe it was because we were sitting in the wrong position, but we were too absorbed to notice. When we need to stand up for a while, we suddenly find that our legs and feet are numb when we stand up. This is because a posture is kept for too long, which compresses blood vessels and leads to nerve ischemia of lower limbs. This situation is usually short-lived. As long as we stand up and move for a few seconds, or even a few minutes, the symptoms of numbness will disappear. When the numbness of your legs or feet persists, what we should be most alert to at this time is the disease from the lumbar spine. Because the nerves are distributed to the feet along the thighs and calves after coming out of the lumbar spine, for example, when the lumbar spinal canal is narrow, the nerves will get stuck when passing through, which will cause numbness in the legs or feet after being compressed, so this continuous numbness, even intermittent numbness, means walking and resting. In this case, I suggest you go to orthopedics in time and come to the corresponding hospital for treatment.