Every day when you get up from sleep your hand is numb, there are generally two conditions, the first is vasculitis, the second is caused by a herniated cervical disc compression nerve. For the first case, you can check the pan-red test, that is, press the finger nail with your hand, wait for the red color to disappear, release the finger and see the time of the red color return, generally normal people <2s, >3s that is considered insufficient blood supply, this situation can be used to determine whether there is vasculitis, vasculitis patients also have a history of smoking. The second condition can be examined by cervical spine nuclear magnetic examination to determine whether there is a herniated cervical disc compressing the nerve, and after a clear diagnosis, further treatment can be carried out according to the diagnostic results.