Start with high-confidence pain management books, then narrow by subgenre or adjacent topics.
Crooked
Cathryn Jakobson Ramin
8 Steps to a Pain-free Back
Esther Gokhale, Susan Adams
Back in Control
David Hanscom
Pain Free
Pete Egoscue, John Lynch
Stretching Anatomy
Arnold G. Nelson, Jouko Kokkonen
The Pain Solution
MD LAc Saloni Sharma, MD Andrew Weil
