The pain-psychology connection: why chronic pain is not just physical

1. After an injury heals, pain can persist because the nervous system has become sensitised. The alarm stays on after the fire is out. 2. Fear of movement (kinesiophobia) is a stronger predictor of chronic disability than the severity of the original injury. 3. Combined physical and psychological treatment produces 30-40% better outcomes for chronic pain than physical treatment alone.

Modern pain science has moved beyond the idea that pain equals tissue damage. Pain is produced by the brain as a protective response. When the brain perceives threat, it creates pain to change your behaviour. Professor Lorimer Moseley, one of the world's leading pain researchers, explains it this way: pain is not a measure of what is happening in your tissues. It is a measure of how much danger your brain thinks you are in. After an injury, the nervous system can become sensitised. The threshold for producing pain drops. Normal movements that should not hurt begin to hurt. The alarm system is stuck on. A 2011 study in the journal Pain found that central sensitisation was present in 70% of chronic pain patients, regardless of the original injury type (Woolf, Pain, 2011).

Kinesiophobia. Fear of movement. It is a stronger predictor of chronic disability than the severity of the original injury. A 2014 systematic review published in the European Journal of Pain found that fear-avoidance beliefs were consistently associated with worse outcomes in chronic low back pain, independent of pain intensity (Wertli et al., European Journal of Pain, 2014). Our psychotherapist Dr. Clare explains: "Clients tell me they stopped bending, stopped lifting, stopped playing with their grandchildren. Not because it hurts. Because they are afraid it will hurt. That fear becomes the disability." When you avoid movement because of fear, muscles weaken. Joints stiffen. Confidence drops. The cycle reinforces itself.

A 2020 meta-analysis in The Lancet found that combined physical and psychological interventions for chronic musculoskeletal pain produced significantly better outcomes than either approach alone. The effect was most pronounced for function and disability, with 30-40% greater improvements compared to physical treatment only (Williams et al., The Lancet, 2020). This makes sense. If pain is partly a brain-produced protective response, you need to address the brain's perception of threat alongside the body's physical capacity.

At Sway, your physiotherapist assesses the physical problem. Your psychotherapist assesses the fear, anxiety, and avoidance patterns around it. Your strength coach builds a programme that gradually exposes you to the movements you are avoiding, at a pace that feels safe. All three communicate. Your physio tells your psychotherapist which movements are safe. Your psychotherapist tells your strength coach which movements trigger anxiety. Your strength coach reports back on what you achieved. This is graded exposure with clinical coordination. It works because the person challenging your body and the person supporting your mind are working from the same brief.

Notice what movements you avoid. Not because of pain right now, but because of fear of pain. Bending to pick something up. Turning to look behind you in the car. Reaching overhead. Make a list. That list is your starting point. Those are the movements that need attention. --- References: Woolf CJ. Central sensitization: implications for the diagnosis and treatment of pain. Pain. 2011. Wertli MM, et al. The role of fear-avoidance beliefs as a prognostic factor for outcome in patients with nonspecific low back pain. European Journal of Pain. 2014. Williams ACC, et al. Psychological therapies for the management of chronic pain. The Lancet. 2020. Moseley GL. Reconceptualising pain according to modern pain science. Physical Therapy Reviews. 2007.