Why Pain Can Persist Even After Tissues Have Healed

Persistent pain is one of the most misunderstood health conditions.

Many people assume that ongoing pain must indicate unresolved injury or structural damage. However, contemporary research demonstrates that pain severity often correlates poorly with tissue pathology identified on imaging (Apkarian et al., 2011; Tracey & Mantyh, 2007).

Pain is generated by the nervous system as a protective output. When pain becomes persistent, it is frequently associated with neuroplastic changes in how the brain and spinal cord process sensory information rather than with ongoing tissue injury (Woolf, 2011).

High-quality neuroimaging and clinical research have shown that prolonged pain can result in increased excitability within central nociceptive pathways — a phenomenon referred to as central sensitisation (Woolf, 2011). In this state, normal or low-threshold sensory inputs may be amplified and interpreted as threatening.

Importantly, this does not mean pain is psychological or imagined. Chronic pain is associated with measurable neurobiological changes involving altered cortical processing, impaired descending inhibition, and heightened responsiveness within pain-related brain networks (Apkarian et al., 2011; Tracey & Mantyh, 2007).

Multiple interacting factors may contribute to ongoing nervous system sensitivity, including disrupted sleep, prolonged stress exposure, reduced physical activity, fear-avoidance behaviours, and autonomic nervous system dysregulation (Moseley & Butler, 2015; Kosek et al., 2016).

These mechanisms help explain why imaging findings alone frequently fail to account for pain intensity or persistence, and why treatments aimed solely at anatomical structures often provide limited benefit in chronic pain states (Nicholas et al., 2019).

Modern pain management therefore adopts a biopsychosocial and neurophysiological framework, recognising pain as an emergent process shaped by biological, psychological, and social influences rather than a direct marker of tissue damage (Nicholas et al., 2019).

Contemporary evidence supports approaches that integrate nervous system regulation, sleep optimisation, graded movement exposure, education, and functional restoration as more effective strategies for long-term pain recovery (Moseley & Butler, 2015; Kosek et al., 2016).

For individuals experiencing ongoing pain despite  normal imaging or repeated treatment attempts, a comprehensive pain assessment  may help clarify contributing mechanisms and guide a safer, more effective  recovery pathway.

With kind regards,

Dr. Kevin Ivins