What causes numbness in arms and hands?

The common causes of numbness in hands and arms are as follows: 1, cervical vertebra problems, cervical spondylosis affects the nerves of upper limbs and oppresses the nerves to be numb. Besides numbness in hands and arms, you often feel stiff and painful neck, heavy neck and sore neck. , even shoulder pain. At this time, take a cervical radiograph and cervical CT to observe whether there is nerve compression; 2, cubital tunnel syndrome, below the elbow, the main little finger and ring finger are numb, compressing the ulnar nerve; 3, carpal tunnel syndrome, mainly below the wrist joint, is the numbness of the thumb, index finger and middle finger, while the little finger and ring finger have no special feeling. Because the median nerve is damaged, that is, the first three fingers are numb, which is very common in people who play mobile phones and use computers. 4. Another risk factor is cerebrovascular disease. In addition to upper limb numbness, it is often accompanied by lower limb numbness or facial numbness. Of course, it may be impossible to distinguish the patients themselves. At this time, you should go to the neurology department and ask a doctor for help to identify whether it is a central problem or a peripheral nerve problem.