You might request a few physical therapy appointments and have them teach you nerve gliding exercises. Or, you can try the DIY version by finding instructional videos or diagrams online...

The height of your desk, chair, mouse and keyboard should be evaluated as well. An Occupational Therapist can be brought in to check your work station if you have a desk job, but again you can probably find this info online. If you do use a mouse, you might consider trying out a touch pad instead--it's more an issue for carpal tunnel patients, but they can cause lots of damage, so...

BTW, you can have false negatives on nerve tests. My nerve responses are faster than normal, so it took years before they dropped to below normal range. http://rheumatology.oxfordjournals.o.../42/4/602.full