The sensory nerve of the finger is the nerve root branching from the cervical spinal cord, forming brachial plexus nerve at the cervical axil, and then branching into radial nerve, median nerve, ulnar nerve and so on. It passes through the upper arm and forearm and becomes the peripheral nerve distributed to the hands and fingers. When the nerves in these parts are damaged, inflamed, grow tumors, are compressed, etc., finger numbness will occur. , causing abnormal feelings. There are several common diseases that cause finger numbness: 1. Peripheral neuritis The peripheral nerve of the finger causes inflammatory reaction due to poisoning, infection, vitamin B deficiency, finger blood supply disorder, etc. , can produce finger numbness. Most fingers of both hands occur at the same time, and they can often be recovered after resection. Oral administration or injection of vitamin B 1, acupuncture and other treatments can promote recovery. Second, ulnar nerve injury, forearm and upper arm ulnar nerve injury, compression or tumor, can cause ipsilateral little finger and ring finger numbness and some finger movement disorders. The groove of ulnar nerve behind elbow is more prone to injury or compression. Most of them will gradually recover about half a year after injury, but if they have tumors, complete fractures or severe compression, they often need surgery. Third, the median nerve injures the median nerve of forearm and upper arm, and the palm, thumb, forefinger and middle finger are numb due to trauma, tumor and compression. Wrist is the most vulnerable to injury or compression, which is called carpal tunnel syndrome. The treatment principle is the same as before. Fourth, radial nerve injury is more likely to be damaged in the middle and lower segments of the lateral upper arm, with numbness on the back of thumb and forefinger and drooping fingers and wrists. The treatment principle is the same as before. 5. The lesion or injury of brachial plexus in axillary region or anterior cervical region can cause mixed symptoms of total or partial injury of ulnar nerve, median nerve and flexor nerve. The treatment principle is the same as before. Six, cervical spondylosis, due to cervical hypertrophy and hyperplasia or cervical intervertebral disc degeneration and protrusion, can cause unilateral or bilateral finger numbness, and gradually develop to the upper arm, forearm, and even upper limb movement disorders. Recently, someone wrote to describe the numbness of the fingers in the right hand. Sometimes the whole arm is numb and painful from shoulder to shoulder, and it is difficult to knit a sweater with a pen. In line with the situation of cervical spondylosis, the letter said that when the hand droops, it will not be numb or painful without exertion. It means that the right upper limb is not compressed after relaxation, and the lesion is still light. As long as the neck and upper limbs are properly exercised, the numbness of fingers will gradually be alleviated. Exercise should be gradual, do it gently first, then strengthen it gradually, and must persist. But to prevent excessive or sudden strong movements. In addition, acupuncture, physical therapy, taking vitamin B 1 etc. You can continue, and cervical traction is also feasible if necessary, but it should be carried out under the guidance of a doctor. If the middle-aged and elderly people's thumbs continue to be numb, such as local oppression for too long, after catching a cold, some feel like acupuncture, some feel heavy or their consciousness drops. Generally speaking, they will disappear soon. If the numbness lasts too long or the symptoms get worse gradually, it is often diagnosed as neuritis or peripheral neuritis when you go to the hospital and look normal. Take or inject some B vitamins orally. Although some people can get better, some people have not improved, especially after middle-aged and elderly people. This is because middle-aged and elderly people feel numb on one side of their thumb, which is often an ominous sign of stroke. In this case, they should not be careless. They should go to the hospital to check their blood pressure, blood lipids, blood sugar and fundus, and it is best to ask a neurologist for a detailed examination just in case.

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