I think it is important to remember, when we are talking about any arm/hand numbing in any nerve distribution, to have someone take a look at the other areas in the upper extremity where the nerve can be entrapped (the median nerve in "carpal tunnel syndrome")
Many times an area of scar tissue build up can be found where the nerve is entrapped (in the neck, shoulder, arm and especially forearm). You need to get rid of this scar tissue to resolve the problem, such as Active Release Technique (ART). Usually you can make a huge dent in your pain within about 4 treatments.
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www.OrangeCountyPainManagement.com