Pain and numbness can have a number of causes. One of the most common factors is pressure on the spinal nerves in the neck and upper back areas which supply nerve energy to the arms and hands. Spinal nerve pressure may be the result of old injuries such as falls, blows, or whiplash. This pressure on the nerves can be intensified or made worse by combinations of physical and emotional stress.
The pressure on spinal nerves can be so slight that the individual may be totally unaware of it until the pressure is increased due to stress involving the neck and shoulder muscles.
While temporary relief may be obtained by relaxing the muscles with therapy or drugs, the most effective and long-lasting relief will come from gentle spinal adjustments to relieve the pressure on the nerves.