Understanding the Pain Matrix
Understanding chronic pain means understanding how the brain and body work together.
By the time many people arrive here, pain or persistent symptoms have already cost them a great deal: appointments, treatments, medication, cancelled plans, work affected, relationships under strain, and hours spent trying to work out what is wrong.
What’s often still missing is an explanation that makes sense of the whole picture:
- Why can symptoms persist when tests and treatments still don’t fully explain what is happening?
- Why can pain or symptoms continue when there is no clear ongoing damage to explain them?
- Why can they ease when you are absorbed, relaxed or away from everyday pressure — then return when you step back into your usual routine?
Modern pain science shows that pain is not simply a signal coming from damaged tissue. What we feel is shaped by the brain and body working together, drawing on physical signals, past experience, attention, expectation, emotion, meaning and context.
I use the pain matrix as a simple way of making those different influences visible and seeing how they may be working together for you.
It does not suggest your pain is imaginary, or that physical findings don’t matter. It helps explain why pain can be completely real without being a precise measure of what is happening in the tissues right now.
Pain is an experience
Real pain does not require ongoing damage.
The International Association for the Study of Pain defines pain as an unpleasant sensory and emotional experience associated with, or resembling that associated with, actual or potential tissue damage.
That word ‘experience’ matters, because pain isn’t something the body simply sends up to the brain like a photograph of damage. The nervous system sends information about the body, and the brain interprets that information in context.
If you break a bone, there’s a clear physical reason for protection. But pain can also persist when tissues have healed, when there’s no clear ongoing damage, or become much greater than the current physical findings would lead us to expect.
The question the brain is effectively trying to answer is not simply, ‘Is there damage?’ It is closer to:
‘How much protection is needed right now?’
The brain does not simply receive pain. It can amplify it, inhibit it, learn it and update it.
When the bodyguard stays on high alert
Protection is useful, but overprotection is exhausting.
Think of the brain as a loyal bodyguard. Its job is not to be perfectly accurate. Its job is to keep you safe.
Imagine walking down a dark street and seeing a shadowy figure ahead. Your heart speeds up, and your body tenses before you have consciously decided anything. Then you get closer and realise it is only two bin bags. The prediction changes, and your body settles.
A sensitised nervous system can become quicker to predict danger and slower to stand down: sometimes responding strongly to situations that are actually safe.
This is one way neuroplastic pain can develop. The brain becomes very good at expecting pain or danger, and very good at producing the protection it thinks you need.
The pain is real, but the prediction can simply have become overprotective.
So what exactly is the Pain Matrix?
There is no single ‘pain centre’ in the brain. Modern neuroscience shows that pain emerges from different brain and nervous-system processes working together.
I use the pain matrix as a practical way of mapping some of the key things science shows can shape an individual pain experience.
These influences are constantly interacting. Most of that processing is automatic, which is why pain can change before you have consciously thought anything at all.
Pain works with prediction too.
When protection becomes learned
The brain gets better at what it repeatedly practises.
Neuroplasticity simply means that the brain changes with experience. Whatever it repeatedly practises, predicts or prepares for becomes easier to do again.
That is incredibly useful when you learn to drive, speak a language or play an instrument. But the same learning system can also become very good at protection.
After food poisoning, the sight or smell of that food may make you feel sick long after the original danger has gone. You don’t choose the reaction. Your brain has connected the food with threat and is trying to protect you from a repeat.
Pain can become associated with a movement, posture, body sensation, place or situation in much the same way. Eventually the nervous system may begin preparing protection before anything harmful has actually happened.
With repetition, the response can become increasingly automatic. Pain may be triggered more easily, last longer or feel more intense than the situation itself would lead us to expect.
Fortunately, neuroplasticity works both ways. What the brain has learned, it can also update.
WHAT SCIENCE SAYS
Chronic pain may affect between one-third and one-half of people in the UK.
NICE, Chronic Pain Guideline NG193
But what about my scan or diagnosis?
A physical finding can be real and still not explain the whole pain experience.
Arthritis, a disc bulge, inflammation, a tear or nerve involvement can all be completely genuine and relevant. This work does not ask you to ignore medical information or stop appropriate treatment.
But a structural finding may not explain why your pain changes dramatically from one day to the next, flares with stress or poor sleep, eases when you are relaxed or absorbed, spreads or moves, or continues long after expected healing.
And sometimes you may have a diagnosis such as fibromyalgia, migraine or IBS that names a very real pattern of symptoms without necessarily explaining why your nervous system is producing them in the way it is.
Two people can have very similar scans and very different experiences of pain.
That’s why the diagnosis is only part of the picture. How your symptoms actually behave can tell us something important too.
From the blog: Why your MRI findings might not be the whole story →
WHAT SCIENCE SAYS
In a trial of 180 people with knee osteoarthritis, arthroscopic surgery produced no better pain or function outcomes than sham surgery.
Moseley et al., New England Journal of Medicine, 2002
What does a sensitised system feel like?
Often, the biggest clue is inconsistency.
You may notice symptoms that swing between mild, severe and almost absent. Pain may spread or appear somewhere new. Touch, movement, sound, smell or busy environments may feel harder to tolerate. Muscles may brace before you have even started to move. Fatigue, dizziness, nausea or digestive symptoms may come and go, and flares may arrive long after the activity you blamed.
Threat does not always feel like obvious fear. It can feel like pressure, unease, being judged, not being taken seriously, being trapped, or having no control over what happens next.
Your nervous system is constantly making rapid judgements about what’s safe and what might need protection — most of them outside conscious awareness.
The aim is not to become permanently calm. A healthy nervous system is flexible: it mobilises when something genuinely needs doing and settles again afterwards.
Everybody’s Pain Matrix is different
There is no one personality type and no single cause.
One person may be bracing against movement. Another may be caught in constant symptom-checking. Someone else may be carrying a frightening memory of illness or injury, or living under relentless pressure with very little recovery time.
That’s why this work has to be individual. The principles may be shared, but the emphasis is different for every person.
When avoidance keeps protection switched on
Avoidance can keep an old prediction untested.
Avoiding something that hurts can feel like the most sensible thing in the world. Sometimes rest is exactly what is needed.
But when an activity or movement is medically considered safe, even though your nervous system is still predicting pain or danger, avoiding it can prevent the brain from discovering that it may now be safe.
The old prediction never gets tested.
Gradually the body may brace earlier, attention narrows and the world gets smaller.
How retraining works
The brain updates through experience, not reassurance alone.
You can know intellectually that a movement is safe and still have your body react as though it is dangerous. That’s why simply telling yourself ‘nothing is wrong’ often is not enough.
Depending on your individual pain matrix, we may work on:
• understanding what your symptoms are telling us
• reducing fear around sensations and flares
• changing patterns of attention and monitoring
• calming high-alert responses
• testing old predictions through small behavioural experiments
• rebuilding confidence in movement and everyday life
A core part of Pain Reprocessing Therapy is somatic tracking — learning to notice sensations with curiosity rather than alarm, so the brain has an opportunity to respond differently.
Where relevant, we may also work with stress, emotion, boundaries or pressure, and use clinical hypnosis, imagery and rehearsal to practise a different response.
We approach this like two scientists: form a hypothesis, try something carefully, notice what happens, and use that information to decide what comes next.
WHAT SCIENCE SAYS
Across 42 controlled studies, people receiving hypnosis experienced greater pain reduction than about 73% of control participants.
Milling LS, Valentine KE, LoStimolo LM, Nett AM and McCarley HS.
Where hypnosis fits
Knowing something is safe and feeling safe are not always the same thing.
Imagine someone with a fear of heights. They know a secure balcony is not going to collapse, yet their heart races and their muscles tighten as they approach the edge.
Knowing it is safe has not yet changed what the body expects.
Clinical hypnosis is one way we can help the brain rehearse something different. Using focused attention, imagery and suggestion, we can practise a calmer response before gradually testing it in real life.
Hypnosis is never compulsory. You remain aware and in control throughout, and if hypnosis does not appeal to you, we can use visualisation and other forms of mental rehearsal instead.
Why meaning matters
Meaning can change physiology.
What you believe is happening can influence attention, expectation, movement, muscle tension and stress physiology.
Placebo and nocebo research make this especially clear: expectation and context can produce measurable changes in symptoms and brain activity.
That does not mean symptoms are imagined. It means meaning is part of biology.
What this could mean for you
Neuroplasticity works both ways.
If your symptoms are being driven or amplified by a sensitised protective system, there may be more to work with than the tissues alone.
- Over time, sensations can feel less alarming.
- Movement can need less preparation.
- Flares can become less frightening.
- Activities you have stopped doing can begin to feel possible again.
- Your body can become something you trust rather than something you are constantly managing.
The same ability of the brain to learn that helped create the pattern is also what gives it the ability to change.
Ready to look at your own Pain Matrix?
You don’t need to work all of this out on your own.
If you recognise some of these patterns in your own symptoms, the next step is not to decide for yourself that your pain is neuroplastic.
It is to look carefully at your history, medical information and the way your symptoms behave.
That is what we begin doing together in the Pain Matrix Recovery Programme.