As a data point, I had "RSI" wrist pain for many years, and finally determined that it was psychosomatic. Sarno is spot on — I've been pain-free for the last 10 years after understanding the real cause.
If you have symptoms which are not easily explainable, and especially if they vary, it is worth taking the effort to read his books.
If you have symptoms which are not easily explainable, and especially if they vary, it is worth taking the effort to read his books.