1, oppression. When people sleep, they will unconsciously press their hands, so that the blood vessels and nerves in their hands are squeezed to a certain extent, resulting in poor blood flow, no blood supply to their hands, and numbness of their fingers. Generally speaking, this situation is caused by the compression of upper limb nerves.
2. disease. Finger numbness is an independent motor nerve injury disease of limbs, which is mostly caused by stroke, hemiplegia, diabetes, cervical spondylosis and lumbar spondylosis. The tiny blood vessels around the motor nerve fibers are not smooth, which compresses the nerves, resulting in serious damage to the motor nerve fibers, decreased nerve conduction ability and speed, numbness of hands and feet, and severe cases can develop into symptoms such as limb paralysis and muscle atrophy.
3. Overuse. This is also closely related to people's living habits. They are so busy with their work that their hands are overused, which leads to pain, weakness and even numbness in the middle of the night. At the same time, some people wonder if this is a precursor to a stroke, but it is not. This is only due to the overuse of their hands. With the rapid development of the Internet age, people have many opportunities to use computer keyboards, and even bank tellers may have similar symptoms.