It is quite natural that a person has freedom of movement, he completely owns his own body - this is necessary for normal life. However, not many of us have thought that this requires the proper functioning of a huge number of systems. It should appear at least a small malfunction in the work of this established "machine", and we are afraid of the fact that we are no longer the masters of our own hands or feet. Therefore, quite often, patients turn to the doctor complaining that their hands are numb. We will try to analyze the reasons for this phenomenon in this article.
System failure
We list some of the most common causes of numbness in the hands.
1. Osteochondrosis. This disease damages the cervical spine, and if the patient also has a herniated disc, then a situation occurs when the nerve roots of the spinal cord are simply pinched. The patient may feel a crunch and pain in the neck, general weakness and numbness of the hands. All kinds of neuritis, plexitis, appearing during fractures of the hands, with dislocations of the joints, often provoke false sensations - paresthesias.
2. If your hands go numb, the reasons may be the malfunction of small branches of the nervous system. Spasm may occur in the small vessels of the hand - Raynaud's disease. A clear sign is that the fingers and hand suddenly turn blue or whiten, and also lose their sensitivity. Most often this happens due to diseases such as systemic lupus erythematosus, rheumatoid arthritis, etc. But there are times when it is simply not possible to identify the cause.
3. If your hands go numb, the reasons may be circulatory failure. Therefore, patients with such a complaint should observe their own habits and postures. You can squeeze blood vessels with your arms constantly crossed on your chest, your neck turned unnaturally ... An excess of lactic acid and a lack of oxygen in the muscles often provoke numbness in the hands. The same symptom occurs in patients with anemia and diabetes.
4. If the hands become numb, the reasons may be hidden in the improper nutrition of tissues, inflammatory or degenerative changes in the vessels and nerves. Also for this reason, the patient may develop chronic hypovitaminosis.
Numb leg - reasons
Numbness of any limb in the first place can talk about improper blood circulation. Blood brings oxygen and glucose to tissues. If the blood enters in small quantities or ceases to flow completely, it affects the state of health very quickly. And the pump that drives blood through our bodies is the heart. It just so happened that it was the legs that were located farthest from the "pump", and therefore blood supply disorders are most often found in the lower extremities. So the most common and most basic reason for numbness of the legs is a violation in the blood supply to the vessels.

- Overcooling can disturb the blood supply to the legs. Therefore, warm shoes in winter are a must. Numbness during hypothermia always begins with the fingers. You should immediately take measures to warm your toes. For example, you can take off your shoes and have a massage.
- Feet can become numb with diseases of the cardiovascular system. If the heart does poorly with its functions, various parts of the body can suffer from this. There may be problems in the vessels themselves. People with diabetes should be especially wary.
- In diabetes mellitus, a diagnosis called โdiabetic footโ is possible, in which blood almost ceases to flow to the tissues of the feet, and they become numb.
- If you sit on a leg for a long time, it also goes numb, but as soon as the blood circulation is normal, the problem disappears.