I had chronic, severe, debilitating pain for years until I read the book: The Mindbody Prescription by Dr. Sarno [1] Someone on HN suggested it in a "carpal tunnel" thread. I didn't have carpal tunnel. I had a completely destroyed knee. No more cartilage. Bone on bone with every step I took (confirmed by MRI). Cortisone didn't make a bit of difference. I couldn't walk 20 feet without mind boggling pain. That book cha…
I like Dr. Sarno's work but his thinking around TMS is IMO the weakest part.
The main insight is really just the fact that a lot of pain doesn't reliably map to any physical conditions. Beyond that we don't know too much. We can infer the brain is involved but not necessarily how. Dr. Sarno takes a psychoanalytic approach focusing on repressed emotions and so forth. But one can come up with many other explanations. One's ideas about pain itself may be a factor.
If deep seated psychological problems were to blame it wouldn't explain how so many people get tremendous relief by simply reading the book.