Mood and fear predict lasting back pain better than how you move

Non-specific low back pain, the kind with no single identifiable cause, is one of the most common reasons people seek help, and it frequently turns from a short episode into something persistent or recurrent. If clinicians could spot early who is heading for lasting pain, they could intervene sooner and more precisely. The candidates for prediction fall into three camps: physical factors such as how the trunk moves, psychophysical factors such as how sensitive someone's pain system is, and psychological factors such as mood, coping style and fear. This review set out to establish which of those camps actually predicts who ends up with persistent pain.

The researchers swept nine databases, including MEDLINE, EMBASE and Web of Science, for studies published up to January 2025 that examined physical, psychophysical or psychological predictors of persistent or recurrent low back pain, pain intensity or disability. Fifteen studies qualified, all addressing persistent pain. Between them they covered one physical predictor domain, trunk kinematics, one psychophysical domain, pain sensitivity, and seven psychological domains including depression and distress, anxiety, fear avoidance, catastrophising, somatisation, coping strategy and pain self-efficacy. Each study's risk of bias was assessed, and the overall certainty of evidence was graded.

Depression and distress significantly predicted persistent low back pain and disability across data covering 15,778 people, and fear avoidance also significantly predicted persistence and disability in data covering 1105 people, though both findings carried low certainty of evidence. Enhanced temporal summation of pain, a measure of how the nervous system winds up pain signals, was not a significant predictor in data from 192 people, with very low certainty. Physical predictors, meaning trunk movement patterns, showed limited and inconclusive evidence. Overall, no predictor domain reached better than low certainty, and the fear avoidance result only narrowly reached statistical significance.

This pooled picture strengthens a shift that has been building in back pain research for years: psychological factors seem to matter more for whether pain persists than measurable physical ones. It complicates the intuition that lasting back pain must trace back to something mechanical in how the spine moves. At the same time, the uniformly low certainty means the field still lacks the high quality studies needed to be confident, and the review shows prediction only; it cannot say whether treating low mood or fear of movement would actually change the course of an episode.

For anyone who has had a bout of back pain, this is a reason to take the psychological side seriously rather than fixating solely on posture, movement quality or scans. Low mood, distress and fear of moving were the signals that best marked out whose pain persisted, so noticing those patterns in yourself is genuinely useful information. It is not evidence that back pain is imagined, nor that any particular treatment works; it simply suggests that the mind's response to pain is part of what determines whether the pain stays.