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Understanding Chronic Pain: Why Pain Persists After an Injury

Older adult holding a painful knee, highlighting the impact of ongoing chronic pain.

Chronic pain can persist long after an injury has healed.


Most people experience musculoskeletal pain at some stage in their lives. For many, symptoms improve within a few weeks. For others, pain lingers, becomes more persistent, and starts affecting work, exercise, sleep and daily activities.

If you’ve ever wondered why pain seems to last longer than expected, you’re not alone. Understanding the factors that contribute to chronic pain can help you take positive steps towards recovery.


Why Listen to Me?

My name is Kevin, and I am a physiotherapist with a special interest in spinal conditions, shoulder problems and complex pain.

Over the years, I have seen firsthand how pain becomes chronic and what actually makes the biggest difference in getting people better.


What Is Chronic Pain?

Chronic pain is generally defined as pain that persists for longer than three months. While ongoing pain can sometimes be linked to tissue damage, this is not always the case.

Research shows that most musculoskeletal tissues heal within approximately 6 to 12 weeks. However, pain can continue beyond this timeframe because it is influenced by more than just the injured tissue. The brain, nervous system, emotions, sleep, stress levels and physical activity all play a role in how pain is experienced.

This helps explain why some people recover quickly while others continue to experience symptoms long after an injury has occurred.


Why Does Pain Persist?

There is rarely a single reason why pain becomes persistent. Instead, several factors often interact to keep symptoms going.

Common contributors include:

  • Reduced movement or fear of movement
  • Stress, anxiety or emotional strain
  • Poor sleep quality
  • Repeated flare-ups from returning to activity too quickly
  • Avoiding exercise and becoming deconditioned
  • Doing too much too soon during recovery
  • Unrealistic expectations about healing time
  • Concerns about scan findings or diagnoses

When these factors combine, the nervous system can become more sensitive. This does not mean the pain is imaginary. Rather, it means the body’s pain system may become more protective and responsive than necessary.


The Pain Cycle Many People Get Stuck In

One of the most common challenges in chronic pain recovery is the belief that pain always equals damage.

When pain is interpreted as a sign that movement is dangerous, people often begin avoiding activities that previously felt normal. While this may seem sensible initially, prolonged avoidance can create new problems.

A common cycle looks like this:

  1. Pain develops
  2. Movement is reduced
  3. Strength and fitness decline
  4. Confidence decreases
  5. Activities become harder
  6. Pain sensitivity increases

Over time, the pain experience can become influenced by physical, neurological and psychological factors rather than the original injury alone.


How Chronic Pain Can Affect Daily LifePerson sitting on a bed experiencing chronic pain and discomfort that is affecting daily activities.

Persistent pain often affects much more than the painful body part.

People living with chronic pain may experience:

  • Reduced physical activity
  • Difficulty participating in sport or exercise
  • Poor sleep quality
  • Increased fatigue
  • Changes in mood and motivation
  • Reduced confidence in movement

These effects can create additional barriers to recovery if they are not addressed as part of a comprehensive management plan.


What Can You Do to Break the Cycle?

The encouraging news is that chronic pain can often improve with the right approach.

Successful management commonly includes:

  • Gradually increasing movement and activity
  • Building strength through progressive exercise
  • Improving sleep habits
  • Managing stress and recovery
  • Understanding how pain works
  • Following a structured rehabilitation plan

Rather than avoiding all discomfort, rehabilitation often focuses on helping people safely rebuild confidence and tolerance to movement over time.


Take the Next Step Towards Recovery

If you’ve been experiencing ongoing pain for more than a few weeks, it may be worth seeking professional advice rather than waiting for symptoms to improve on their own.

Understanding why your pain is persisting can be an important step towards regaining confidence, improving function and returning to the activities you enjoy.

Book a session with one of our physiotherapists to discuss your symptoms and develop a personalised plan to help you move forward.


Written By:

Kevin Go (Physiotherapist)

Bachelor of Physiotherapy


References

Blyth, F.M. et al. (2001) ‘Chronic pain in Australia: A prevalence study’, Pain, 89(2), pp. 127–134. doi:10.1016/s0304-3959(00)00355-9.

Gatchel, R.J. et al. (2018) ‘Transitioning from acute to chronic pain: An examination of different trajectories of low-back pain’, Healthcare, 6(2), p. 48. doi:10.3390/healthcare6020048.

Price, T.J. and Ray, P.R. (2019) ‘Recent advances toward understanding the mysteries of the acute to chronic pain transition’, Current Opinion in Physiology, 11, pp. 42–50. doi:10.1016/j.cophys.2019.05.015.


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