Cognitive Behavioural Therapy – CBT for Chronic Pain
Chronic pain affects approximately 45% of people living in
the UK. This equates to over 28 million individuals suffering with pain
symptoms lasting more than three months and causing significant impairment to daily
life.
This article will explain how our scientific understanding
of pain has developed, the difference between acute and chronic pain and the
Cognitive Behavioural Therapy approaches that have been developed to significantly
improve the management of long-term pain conditions.
What is Pain?
Pain is a process for alerting the body to threat and injury
and an essential component of the body’s ability to repair and heal. Pain
perception, however, is highly subjective and based on a complex series of
interactions between biological, psychological and social factors that
influence the duration, intensity and frequency of pain itself.
For this purpose, it’s often helpful to distinguish between
acute and chronic pain. Acute pain is the initial signal alerting the body to injury
or physical harm. Acute pain is a protective mechanism that can persist whilst
the healing process continues. By contrast, chronic pain is diagnosed following
a minimum of three months and after the biological healing process has
happened. Although pain is still experienced, this is no longer alerting the
body to further injury or damage. Acute pain can therefore be viewed as a
symptom and chronic pain as a condition.
Whilst it’s relatively straight forward to apply this
definition to injuries such as broken bones, there is often an overlap between
acute and chronic pain and a vicious cycle of suffering in deteriorative conditions
or diseases. It’s therefore important to recognise and treat the acute and
chronic pain symptoms in a multidisciplinary manner; using medical,
psychological and lifestyle changes to address the different facets of the
pain.
To understand how CBT has been developed to support a
multidisciplinary approach to pain management, it’s helpful to explore how our scientific
understanding of the interplay between biological and psychological factors has
evolved over time.
The Evolution of the Pain Model
The science underpinning our current understanding of pain
treatment can be traced as far back as Plato - 328-347 B.C. Philosophically, Plato
recognised that pain was more than a simple physical reaction, involving a wider
emotional experience that continued when the stimulus was lasting or intense.
It wasn’t until the 17th century, however, that a medical
conceptualisation of pain was first postulated by Renee Descartes.
Descartes developed the Cartesian Dualism theory of pain in
1644, proposing that the mind was incapable of influencing the body and that
pain was a purely physical phenomenon. Whilst this biological approach contributed
to the advancement of medical science, it also promoted a simplistic and reductionist
view of pain that influenced medical theory until well into the 20th
century.
Linked to the Cartesian model, the “Specificity” theory of
pain was first articulated by Charles Bell in 1811 and developed by Von Frey in
1894. This introduced the direct
connection between pain sensors, specific pain pathways and different
anatomical areas of the brain. Whilst Specificity theory made a significant
contribution to medical science throughout the 19th century, it
continued to promote a separation of the mind and body. Many clinicians still
view pain in this binary manner, treating pain as a purely physical symptom and
prescribing pain relief medication on a transactional basis.
In the 1940s, pioneering clinicians including Henry Beacher
and John Joseph Bonica first documented the direct influence of psychological
factors on the pain levels reported by soldiers and veterans returning from the Second World War. This demonstrated a link between biological, psychological
and lifestyle factors in the experience and chronicity of pain.
It wasn’t until 1965 that Melzack and Wall provided a
theoretical model to explain how this interaction between biological, cognitive
and emotional factors worked to influence pain perception between the mind and
body.
Melzack and Wall’s Gate Control theory explained the interactions
between the pain sensors known as Nociceptors, the pain gateway situated in the
spinal cord and the different areas of the brain anatomically associated with the
interpretation of different pain experiences.
This fundamental breakthrough in pain theory, provided the
basis for understanding the complex interaction between biological injury and
the cognitive and emotional factors that influence the experience and
maintenance of pain itself.
Gate Control theory still provides the model through which
we understand the direct links between emotions such as depression or anxiety
and the intensity of pain. As Melzack said, pain is experienced in the mind. In 1977 this mind body connection was further developed through
the “Biopsychosocial” model of pain introduced by George Engle and developed by
John D. Loeser.
The Biopsychosocial model identified four key factors that
influence our modern understanding of the experience and maintenance of pain.
These are:
- Nociception: the signal that is sent from the peripheral nervous system to the brain to alert the body to potential harm or damage.
- Pain: the subjective experience of the pain signal as processed by the brain.
- Suffering; the emotional response to the nociceptive pain signal.
- Pain Behaviours: the action that the individual takes in response to the experience of pain.
The Biopsychosocial model of pain is now widely used to
understand the complex interaction between biological, psychological and social
factors in the maintenance of chronic pain. Research shows that chronic pain can
be significantly moderated through the individual’s cognitive appraisal, emotional
reaction and behavioural learning.
In spite of this, many doctors still persist in treating pain
as a purely medical problem. Over the last 60 years, this has contributed to an
increase in reported chronic pain levels and a marked dependency on pain relief
medications. Opioid addiction and chronic pain prevalence levels have increased
in tandem and are well documented in the research literature.
Empirical research has demonstrated
that psychological factors including operant and conditioned learning,
expectancy, memory, cognitive patterns, belief structures and anxiety / mood
disorders all play a significant part in the individual’s subjective experience
of pain.
Cognitive Behavioural Therapy (CBT) treatment approaches
have therefore been developed to target changes in the negative thinking
patterns and behaviours that maintain and exacerbate chronic pain. These
approaches have been found to be highly affective in increasing pain
thresholds, alleviating suffering and improving quality of life standards.
The following section in this article briefly outlines how
CBT is used as part of a multidisciplinary approach to effectively manage
chronic pain conditions.
The CBT Treatment Process for Chronic Pain
Cognitive Behavioural Therapy is the recommended treatment
of choice for chronic pain conditions. It’s the most researched form of
psychotherapy for pain and the empirical data demonstrates that it is highly effective
in managing chronic pain and improving quality of life.
CBT is a practical psychological approach that helps
individuals identify and alter the thinking and behavioural patterns that
maintain chronic pain. It focuses on the cognitive, behavioural and context
factors that maintain and amplify chronic pain.
In addition to traditional CBT
approaches, a new form of CBT known as Acceptance and Commitment Therapy (ACT)
has been found to be highly efficacious in the treatment of pain. This works by
teaching individuals to unhook from and lower resistance to negative pain
appraisals and unhelpful avoidance behaviours.
Key approaches in the CBT treatment process include:
- Identification of pain thresholds and activity baselines.
- Psychoeducation on the maintenance factors for chronic pain and development of a chronic pain formulation.
- Activity pacing and management of medication schedules.
- Multimodal relaxation training.
- Behavioural activation and behavioural bandwidth experiments.
- Focus of attention training and mindfulness exercises.
- Memory rescripting – particularly where trauma is implicated.
- Cognitive change and defusion techniques.
- Sleep strategies to cope with pain during sleep time.
- Relapse and resilience planning.
The above techniques are highly structured and require the
support of a professionally qualified and experienced CBT specialist. Whilst
there are many individuals offering CBT, our advice is to always check the
credentials of the therapist by visiting the UK CBT register.
Our CBT specialists are all post-graduate qualified,
experienced and fully accredited by the British Association of Behavioural and
Cognitive Psychotherapy (BABCP). This means that you can be assured that you
are working with a properly qualified and professionally recognised Cognitive
Behavioural Psychotherapist.
You can find out more about how we deliver CBT for chronic
pain conditions by visiting our page at – https://thinkcbt.com/cbt-for-chronic-pain
You can also find a range of CBT articles, reliable
information and CBT resources by visiting our website at www.thinkcbt.com.
Disclaimer: the information in this
article reflects the opinions of Think CBT and does not represent the position
of any other professional / membership body.