Hands Go Numb When Sleeping. A vitamin deficiency may be the guilty party too. Poor blood circulation due to inappropriate body positions can cause numbness while sleeping. It can happen when you sleep on your arm or hand or in a position that puts pressure on a nerve. Hand numbness is usually caused by damage irritation or compression of one of the nerves or a branch of one of the nerves in your arm and wrist.
Sleep with your arms at your sides instead of above your head. Keeping your wrists straight will allow the nerves to work as they should. Surgery to release the nerve is usually the last resort. This includes sleeping on the hands or arms which places pressure on these areas for hours at night. Poor blood circulation due to inappropriate body positions can cause numbness while sleeping. It can also be felt in other areas like the legs.
The syndrome can cause pain and numbness in the arms and hands but one of the first symptoms is paresthesia that occurs in the hands and wrists more frequently at night.
Carpal tunnel syndrome is another culprit of hand numbness while sleeping. Occasionally the numbness can be explained easily if you are lying on your hands or arms when you sleep. Diabetes causes arms or hands and feet to fall asleep even when one is awake and relaxed. A vitamin deficiency may be the guilty party too. Sleeping with your arms above your head can cause numbness by cutting off circulation to your hands. The nervus ulnaris stretches the fingers.