Numbness is caused by poor peripheral blood circulation and insufficient blood supply to hands and feet. Numbness of hands and feet is a common symptom in people's daily life, such as pregnancy, incorrect sleeping position, long-term squatting in the toilet and so on.

In this case, you can do it several times by putting your hands on your chin or clenching your hands to relax. If your feet are numb, tighten your feet and relax, and repeat it several times, which will relieve you. This kind of numbness in hands and feet is generally mild, which can generally be relieved in a short time, and there is generally no big problem. If the numbness of hands and feet lasts for a long time and is accompanied by other symptoms, it may be a signal of other diseases, so you should seek medical attention as soon as possible.

Second, pathological numbness of hands and feet

In addition to the numbness of hands and feet caused by physiological reasons, some people have been numb for a long time (more than one day) and must see a doctor. No matter what causes numbness in hands and feet, you should first seek medical treatment from neurology or orthopedics. The causes of numbness in hands and feet generally have the following aspects:

1, diabetes. Diabetic neuropathy is mainly caused by hyperglycemia damaging blood vessels and nerves. Hands and feet are cold, numb and nervous, tied like cuffs or socks, or crawling like ants. These are the early symptoms of diabetic neuropathy. In severe cases, there will be dyskinesia such as walking foot pain, limping and unstable walking.

Especially when sleeping at night, the pain is aggravated, like a saw sawing a leg. It hurts like a sharp heart. If you sleep well, you will suddenly wake up with leg pain and stay awake all night. Therefore, when there is numbness and pain in limbs, it is necessary for patients, especially the elderly, to check blood sugar in time.

2. Transient ischemic attack. If one limb is numb and the other limb is normal, it may be caused by transient ischemic attack (TIA), which is easy to develop into cerebral infarction. Therefore, it is particularly important for middle-aged and elderly people with high blood pressure, carotid atherosclerosis and plaque formation.

Limb numbness caused by transient ischemic attack or cerebral infarction is usually acute, and may be accompanied by symptoms such as speech disorder and hemikinesia. This type should be treated immediately.

3, cervical spondylosis, lumbar spondylosis. Cervical disc herniation will compress the nerves and blood vessels in the neck, causing numbness in the arms and fingers. This numbness is usually chronic and recurrent, accompanied by neck and shoulder pain, stiffness and other discomfort. Long-term work, cold in the neck, too high pillows and cushions are all easy to cause this disease.

Most patients with lumbar disc herniation will have symptoms of numbness of the lower limbs, which are usually manifested as chronic repeated numbness of one or both sides of the thigh, calf and foot, accompanied by pain and discomfort in the waist.

5, neuritis. Such as Guillain-Barre syndrome and multiple sclerosis, are a group of autoimmune diseases, which are caused by the destruction of nerve fibers and myelin sheath by autoimmune attacks. Early symptoms are mainly sensory disturbance, but electrophysiological examination often shows that both motor nerves and sensory nerves are involved. Clinically, it presents symmetrical pain and abnormal sensation, and the symptoms of lower limbs are more common than those of upper limbs.

Abnormal feelings include numbness, ant walking, insect crawling, fever and electric shock. These feelings usually reach the knee from the distal toe, and the patient feels like wearing socks and gloves. The diagnosis of this disease requires the rich clinical experience of neurologists, detailed medical history inquiry and systematic nervous system examination.

In short, it is most important to treat numbness of hands and feet in time. If the numbness of hands and feet exceeds 1 day, or other symptoms suddenly appear, it is suggested to go to the neurology department of the hospital in time to judge what kind of stimulation has been received and whether there is nerve injury by means of CT and magnetic resonance, and then further confirm the nature, scope and severity of nerve injury by auxiliary examinations such as electromyography. If numbness of hands and feet is caused by other reasons, then transfer to other relevant departments for treatment.