John Siracusa has suffered with RSI for many years. He wrote most of these massive reviews with voice recognition software. He talks about his RSI in this podcast:
http://techdistortion.com/podcasts/pragmatic/episode-50-acci...
http://techdistortion.com/podcasts/pragmatic/episode-50-acci...
http://aaroniba.net/articles/tmp/how-i-cured-my-rsi-pain.htm...
I agree that while the symptoms of RSI may be physical, the root cause is psychological.