1, upper limb nerve compression: First, the thumb, food and middle finger are numb and painful, and they often wake up at night, and their activities can be improved after waking up. Severe cases may be accompanied by hand muscle atrophy, which affects fine hand movements. This is because the median nerve is compressed at the wrist, which is called carpal tunnel syndrome. Second, the numbness and pain of the ring and the little finger may also have a history of waking up at night. Severe cases are accompanied by muscle atrophy, and the flexion of the ring and little finger is reduced, which affects the fine use. This is because the nerve is compressed at the elbow, which is called "cubital tunnel syndrome".

2, cervical spondylosis: The most common disease causing hand numbness is cervical spondylosis, which is one of the diseases that are prone to middle-aged and elderly people. When people enter middle age, some organs tend to degenerate. When cervical intervertebral disc degenerates, it often leads to cervical intervertebral disc protrusion or articular process hyperplasia or hypertrophy. Once these protruding cervical intervertebral discs or hyperplastic articular processes compress the adjacent cervical nerve roots, cervical spondylosis will occur. In addition to numbness of fingers and abnormal sensation, cervical spondylosis is accompanied by other symptoms, such as neck and shoulder pain, radiation pain of upper limbs or dyskinesia. It is not difficult to diagnose cervical spondylosis. Just take an X-ray. In addition, there is a simple method to check cervical spondylosis. One person holds the head of the affected side, one hand holds the upper limb of the affected side, abduction is 90 degrees, and both hands push and pull in the opposite direction at the same time. Those with radiation pain or numbness can be initially diagnosed as cervical spondylosis.

3. Stroke: Another common disease that causes hand numbness is stroke. Health tips? Zhongfengmen once said: "Anyone who feels that the thumb or the second finger is insensitive or unused for the first time will have a stroke within three years." Precautions must be taken: live carefully, eat frugally, stay away from home and be broad-minded. Although finger numbness does not necessarily lead to stroke, for middle-aged people over 40 years old, if they often have symptoms such as headache, dizziness, top-heaviness, numbness of limbs and swelling of tongue, and patients usually suffer from diseases such as hypertension, hyperlipidemia, diabetes and cerebral arteriosclerosis. They should pay more attention to and be alert to the occurrence of stroke.

4, menopausal syndrome: women who enter menopause sometimes have hand numbness, but it is not obvious, with the end of menopause, hand numbness will disappear.

In short, the diagnosis of hand numbness symptoms needs to refer to cervical radiographs, electromyography and other auxiliary examinations to make a clear conclusion. Once diagnosed, if the symptoms are still mild, they can be improved to varying degrees through regular non-surgical treatment. If the symptoms are obvious and there is obvious muscular atrophy in the hand, surgical treatment should be carried out in time to prevent the development of the disease, so as not to cause irreversible severe atrophy of the internal muscles of the hand and lead to serious dysfunction of the hand.

Causes of hand numbness

1. Vascular factors:

When we sit for a long time or sit badly, it will cause numbness in the lower limbs and numbness in the wrong posture of our hands. ) because when blood vessels are compressed, blood vessels supply limbs with ischemia, causing numbness. When the oppression is released and the blood flows, there will be many ants crawling. As shown in the figure, when the ulnar artery and radial artery of the upper limb are compressed somewhere, they will cause hand numbness.

2. Neurological factors:

Nerves have axial flow. When the nerve is compressed, the axial flow is blocked, which can also cause hand numbness. As shown in the figure, the palm mainly includes radial nerve, ulnar nerve and median nerve. These nerves start from the cervical spinal canal, pass through joints, ligaments and bone fiber tubes, and reach the palmar apex. Any part of the nerve is compressed, which will cause numbness in the hands.

3. Brain factors:

All nerves come from the brain. When something goes wrong with the brain, such as a stroke, the area dominated by the brain will be numb and powerless.

4. System factors:

Some systemic diseases, such as:

A. Hyperlipidemia: Hyperlipidemia for a long time can easily lead to vascular wall sclerosis. In addition, hyperlipidemia, thick blood, slow blood flow, and reduced oxygen nutrients for cells will all lead to numbness.

B. Diabetic patients: maintaining blood sugar at a high level will cause great damage to human blood vessels and nerves for a long time, arteriosclerosis and neurodegeneration.

Numbness of hands and feet is a common symptom in people's daily life, such as pregnancy, incorrect sleeping position, squatting in the toilet for a long time, etc., which are generally eliminated in a short time without any major problems. But some people have been numb for a long time (more than one day) and have to see a doctor. But which subject should I study? Experts say that no matter what causes numbness in hands and feet, neurology should be consulted first.

The causes of numbness in hands and feet generally have the following four aspects:

First, people with diabetes will be numb in their hands and feet. As long as numbness, soreness and swelling often appear in any part of the body, it is necessary to check blood sugar in time, especially in the elderly.

The second is numbness caused by drugs or chemicals. If you have a cold or diarrhea, taking berberine or furazolidone will cause numbness in your hands and feet; Staying in an environment containing hydrogen, arsenic and carbon disulfide for a long time can also cause numbness in hands and feet.

The third is numbness caused by neuritis. The most common symptoms of neuritis are numbness of hands and feet, muscular atrophy and weakness of limbs. If you have diarrhea or catch a cold for half a month, it will cause neuritis.

Fourth, the limbs are scattered and numb. Numbness of limbs does not occur at the same time, but is scattered. This situation is that local nerves are stimulated, such as stroke coma after drunkenness, nerve stimulation in the head, nerve stimulation in the hands of the elderly with crutches, numbness in the upper limbs caused by cervical spondylosis, and numbness in the legs caused by waist and shoulder nerve stimulation.

Numbness of hands and feet cannot be treated symptomatically, but the cause should be treated. No matter what causes numbness in hands and feet, you should first go to the hospital neurology department to check whether there is nerve damage and what kind of stimulation you have received. If it is a neurological problem, electromyography is needed to further confirm the degree, scope and nature of nerve injury. If the numbness of hands and feet is caused by other reasons, it will be transferred to other relevant departments for treatment. The numbness of hands and feet caused by nerve injury should be treated with drugs or surgery according to the degree, scope and nature of nerve injury. Drug therapy is usually combined with acupuncture and physical therapy to promote its rapid recovery. Surgical treatment is to open the compressed nerve by surgery to relieve the oppression and stimulation of the nerve. The degree of cure of the disease mainly depends on the etiology and nature of neuropathy. If it is peripheral nerve injury (except brain and spinal cord), it usually takes a long time to recover. Go to the hospital to go to orthopedics or surgery or pain department.