I have read the book. It's a very clear explaination of how your central nervous system changes in response to chronic pain. It really only covers the part of the pain that is not related to ongoing reinjury, the part called central nervous system hyperexcitbility. However that part is a significant part of any chronic pain injury and it is very helpful to understand it. The authors have shown with FMRI that understanding this part can reduce activity in one part of your brain related to pain.

It's aimed at people who have no background in the revalent sciences, and does a good job. If you have enough of a science background to read medical books and journals, there are other resources I prefer for the material to this book, but I think it's excellent for the intended readership.

The authors are well known pain reseachers. Peter Edgelow, a well known TOS PT, trained with them.