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 Treasure in the Air Door" once said: "Anyone who feels that his thumb and second finger are insensitive or not used 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.