By Pat Anson, PNN Editor

Anyone who has lived with chronic back pain knows how difficult it is to treat. Pain medications provide only temporary relief, and surgeries and injections can be risky.

An extensive review of back pain treatments by The Lancet concluded that many were of “dubious benefit” and that most people with low back pain would respond to “simple physical and psychological therapies” that keep them active.

A small study recently published in JAMA Psychiatry lends some support to that belief, finding that two-thirds of chronic back pain patients who received a novel psychological treatment called Pain Reprocessing Therapy (PRT) were pain-free or nearly pain-free after four weeks. Most continued to experience relief for a year.

The researchers behind the study liken chronic pain to an alarm clock stuck in the “on” position long after the initial injury has healed.

“For a long time we have thought that chronic pain is due primarily to problems in the body, and most treatments to date have targeted that,” said lead author Yoni Ashar, PhD, a postdoctoral associate at Weill Cornell Medical College. “This treatment is based on the premise that the brain can generate pain in the absence of injury or after an injury has healed, and that people can unlearn that pain. Our study shows it works.”

PRT therapy was developed by Alan Gordon, a Los Angeles-based psychotherapist and author of a new book on healing chronic pain called “The Way Out.”

PRT is based on the premise that patients can reduce or even eliminate chronic pain by changing the way they think about it, using mindfulness and cognitive behavioral therapy. The goal is to eliminate fear and avoidance techniques that many patients have about their pain.

“The idea is that by thinking about the pain as safe rather than threatening, patients can alter the brain networks reinforcing the pain, and neutralize it,” Ashar explained.

For the randomized controlled trial, Ashar and his colleagues recruited 151 people who had low to moderate back pain for at least six months, with an intensity of at least four on a pain scale of zero to 10.

Those in the treatment group received 8 one-hour sessions of PRT, in which they were encouraged to reappraise the severity of their pain by engaging in movements they were afraid to do. This helped them overcome some of the negative emotions they had about pain. 

After four weeks, 66 percent of patients in the treatment group were pain-free or nearly pain-free, compared to 20% in a placebo group and 10% who received no treatment.

The findings were confirmed post-treatment by MRI brain scans, which showed that brain regions associated with pain processing – such as the anterior insula and anterior midcingulate — had quieted significantly in those who had PRT therapy. 

“The magnitude and durability of pain reductions we saw are very rarely observed in chronic pain treatment trials,” Ashar said.

The study focused only on PRT therapy for back pain, so future studies are needed to determine if PRT would produce similar results for other types of chronic pain. 

“This study suggests a fundamentally new way to think about both the causes of chronic back pain for many people and the tools that are available to treat that pain,” said co-author Sona Dimidjian, PhD, a professor of psychology and neuroscience at CU Boulder. “It provides a potentially powerful option for people who want to live free or nearly free of pain.”