Pain is often treated as a single phenomenon that simply varies in severity. In clinical practice the distinction between acute and chronic pain is considerably more significant than a difference of degree. They arise from different mechanisms, progress differently, and respond to different interventions. Applying an acute pain treatment model to a chronic pain presentation is one of the most common reasons that treatment fails.
What Acute Pain Is and Does
Acute pain is the immediate response to tissue damage or the threat of it. It is protective, informative, and time-limited. When you sprain an ankle, the sharp pain that follows signals tissue damage and motivates you to protect the area. As the tissue heals, the pain signal diminishes. When recovery is complete, the pain resolves.
The nervous system generates acute pain in response to peripheral nociceptor activity. The peripheral nerves transmit the signal to the spinal cord, which relays it to the brain. The intensity of the pain broadly correlates with the extent of the tissue damage. Treatment aimed at the tissue, reducing inflammation, supporting structural healing, and restoring movement, addresses the source of the signal and allows the pain to resolve.
What Chronic Pain Is and Does
Chronic pain is conventionally defined as pain persisting beyond twelve weeks. But the definition is less important than the mechanism. Chronic pain is characterised by changes within the nervous system itself that sustain the pain experience independently of the peripheral tissue state.
The nervous system, having processed sustained pain signals over time, undergoes a process of sensitisation. The synapses involved in pain transmission become more efficient. Inhibitory pathways that normally dampen pain signals become less effective. Areas of the brain and spinal cord not originally involved in the pain response become recruited. The result is a nervous system that generates and amplifies pain signals with reduced provocation from the periphery.
At this point, treating the peripheral tissue, however successfully, does not fully resolve the pain. The nervous system has reorganised around the experience of pain and will continue to generate it even as the tissue recovers. This is not a psychological problem. It is a neurological one.
What This Means for Choosing Treatment
Acute pain responds well to direct tissue intervention: anti-inflammatories, structural manual therapy, rest, and progressive rehabilitation. These approaches address the peripheral source of the pain signal, and as the signal reduces, the pain resolves.
Chronic pain requires a different strategy. Approaches that reduce the peripheral load on the sensitised nervous system, support nervous system downregulation, and directly address stored holding patterns in the tissues are more appropriate than those that focus purely on structural correction.
Body Stress Release operates within this model. By identifying and releasing stored tension in the nervous system’s musculoskeletal holding patterns, Peter van Minnen reduces the peripheral input that feeds the chronic pain cycle, while the gentle nature of the approach avoids triggering further defensive escalation in a sensitised system.
For those whose pain has reached the point of central sensitisation, our article on what is central sensitisation explains the specific neurological mechanism involved.
If you are unsure whether your pain is acute or chronic, or if chronic pain has not responded to standard treatment, contact us to speak with Peter van Minnen at Hever Health.