What causes numbness in the hands at night?

Some people wake up at night with numbness in the hands, part of which is caused by improper sleep posture compression of the arms affecting blood circulation, such cases of numbness can be relieved within a short time after waking up.
In addition, some diseases may also lead to hand numbness, such as cervical spondylosis, cervical spine compression nerve can cause hand numbness, stroke hemiplegia, diabetes, neuritis, etc. may also lead to hand numbness. If the hand numbness cannot be relieved for a long time after waking up or if there is no pressure on the limb during sleep but the hand numbness is still present when waking up, it is recommended to seek timely medical attention to identify the cause.