What could be causing my 6-year-old son's hands to be numb and him to have frequent nightmares?

The symptoms described by the user, such as numb hands and recurring nightmares in a 6-year-old child, could potentially be caused by a variety of factors. It is important to consult a medical professional to determine the underlying cause and receive appropriate treatment. It is possible that these symptoms may be related to anxiety, but a doctor will be able to provide a more accurate diagnosis and recommend the appropriate course of action.