Dr. Alex Jimenez, El Paso's Chiropractor
I hope you have enjoyed our blog posts on various health, nutritional and injury related topics. Please don't hesitate in calling us or myself if you have questions when the need to seek care arises. Call the office or myself. Office 915-850-0900 - Cell 915-540-8444 Great Regards. Dr. J

Depression and Anxiety in Chronic Pain

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Everyone will experience some type of pain throughout their lifetime, however, for those people who have anxiety or depression, pain can become especially intense and it can be challenging to treat. Individuals experiencing depression, for instance, often experience more severe and long-term pain than other individuals. The overlap of anxiety, depression, and pain is very evident in chronic pain and sometimes debilitating syndromes, such as fibromyalgia, irritable bowel syndrome, low back pain, headaches, and nerve pain. Psychiatric disorders not only bring about pain intensity but also contribute to increased risk of disability.

 

Researchers once believed that the connection between pain, anxiety, and depression resulted mostly from psychological rather than biological factors. Chronic pain can lead to depression, and also, major depression may feel emotionally painful. But as researchers have learned more about how the brain works, and how the nervous system interacts with other areas of the body, they’ve found that pain shares some biological mechanisms with depression and anxiety. Therapy is challenging when pain overlaps with anxiety or depression. Focus on pain can conceal both the clinician’s and patient’s awareness that a psychiatric disorder is also present. Even when the two types of problems are properly diagnosed, they can be difficult to treat.

 

Depression and Anxiety in Pain

 

Abstract

 

  • Mood disorders, especially depression and anxiety, play an important role in the exacerbation of pain perception in all clinical settings.
  • Depression commonly occurs as a result of chronic pain and needs treating to improve outcome measures and quality of life.
  • Anxiety negatively affects thoughts and behaviours which hinders rehabilitation.
  • Anxiety and depression in acute hospital settings also negatively affect pain experience and should be considered in both adults and children.
  • Poor pain control and significant mood disorders perioperatively contribute to the development of chronic postoperative pain.

 

Introduction

 

Pain concepts have moved radically away from the early nociceptive Cartesian principle, where a specific lesion in the body is experienced as pain by the brain. This has been replaced by the widely accepted biopsychosocial model, where tissue damage, psychology and environmental factors all interact to determine pain experience. The IASP’s definition of pain as “an unpleasant sensory or emotional experience associated with tissue damage…” further emphasises the significant role of mood and emotions for pain perception. Among these, depression and anxiety have been implicated as important contributors to the experience of pain, and have been extensively studied.

 

Depression

 

Depression is characterised by a pervasive low mood, loss of interest in usual activities and diminished ability to experience pleasure. Within this definition there exists a whole spectrum of severity, symptoms and signs together with their classifications. The DSM-IV (Diagnostic and Statistical Manual) is a common diagnostic classification system for psychiatric conditions and is also used for research, insurance and administration[1]. A common prerequisite for diagnosis of depression or other psychiatric disorders is that any symptoms experienced should result in clinically significant distress or impairment of social, occupational, or other important areas of functioning.

 

The Scale of the Problem

 

The association of chronic pain with depression has been of great interest in the past few decades. Chronic musculoskeletal pain patients have higher depression than individuals without pain in a general population study[2]. A third of patients in a pain clinic population had ‘major depression’ according to the criteria of the Diagnostic and Statistical Manual (DSM IV) following structured interviews[3]. The presence of pain can make recognition of depression more difficult, even though increased severity of pain worsens depressive symptoms[4].

 

Diagnostic and Assessment Issues

 

The association between depression and chronic pain, though widely accepted, is marred by diagnostic difficulties. In research for ‘depression’ various definitions exist in studies, leading to a variety of assessment methods, including self report instruments, chart reviews and structured or unstructured clinical interviews. Many studies relating to depression and chronic pain include heterogenous groups of patients with different chronic pain conditions and unspecified diagnostic criteria for depression. This clearly questions the validity of studies.

 

In the clinical setting many tools exist for the assessment of the severity and nature of depression. In chronic pain, the Zung Self-Rating Depression Scale (SDS), Beck’s Depression Inventory (BDI) and Depression, Anxiety and Stress Scale (DASS) are commonly used. The SDS and DASS in particular, have shown high internal consistency and validity in chronic pain patients. However many criteria for depression, like fatigue, insomnia and weight change, are symptoms attributable to chronic pain itself. The DSM-IV places emphasis on weight loss, appetite change and fatigue on diagnosis, and the Beck’s Depression Inventory and Zung Self-Rating Depression Scales also include a substantial number of such somatic items. Such ‘criterion contamination’ may lead to overestimation of depression. The DASS excludes such somatic items and is thought to provide a more accurate assessment of depression, especially in chronic pain patients[5]. Another questionnaire designed specifically for chronic pain patients is the Depression, Anxiety and Positive Outlook Scale (DAPOS). This also contains no somatic items and includes measures of optimism[6].

 

These points illustrate the unique difficulty present in the study of depression in chronic pain patients. It is not surprising that meta-analyses or systematic reviews in this area are relatively scarce. Just as depression is not a single entity but a spectrum, chronic pain patients are also a very heterogenous group of patients. All these have to be borne in mind when reviewing papers and studies of depression in chronic pain.

 

Depression and Pain: Chicken and Egg?

 

Physiological similarities exist between chronic pain and depression. For example, noradrenaline and serotonin involved in the pathophysiology of depression also coincide with the anatomical ‘descending inhibition’ of pain perception. These two neurotransmitters act in the limbic system and periaqueductal areas to modulate incoming pain stimuli. Antidepressants working through these neurotransmitters are also analgesic regardless of the presence of depression.

 

This leads to the question of whether depression follows the establishment of chronic pain or whether chronic pain is a manifestation of a form of depression or a spectrum thereof. Some evidence exists for both views. For example, patients with preexisting depression were found to be more likely to develop chest pain and headaches in a three year period[7]. Conversely a review of forty studies supported the notion that depression is a consequence of protracted pain[8]. The ‘diathesis-stress’ model for this conundrum is now growing in acceptance which supports that depression is a sequalae of chronic pain. Accordingly people with a psychological predisposition (diathesis), superimposed with the stresses of chronic pain go on to develop clinical depression.

 

Chronic pain is also associated with anxiety disorders (discussed below), somatoform disorders, substance use disorders, and personality disorders. As with depression, pre-existing, semidormant characteristics of the individual before the onset of chronic pain are activated and exacerbated by the stress of chronic pain, eventually resulting in diagnosable psychopathology[9]. Psychosocial elements which predict chronic pain and disability (yellow flags) used in clinical practice may well fit into this construct.

 

Yellow Flags are psychosocial factors that increase the risk of developing or perpetuating long-term disability and work loss associated with low back pain. Such include:

 

  • Attitudes and Beliefs about back pain. The belief that pain is harmful or disabling resulting in fear-avoidance behaviour.
  • Behaviours. Use of extended rest, disproportionate ‘downtime’.
  • Compensation Issues. Lack of financial incentive to return to work.
  • Diagnosis and Treatment. Health professional sanctioning disability, not providing interventions that will improve function.
  • Emotions. Fear of increased pain with activity or work.
  • Family and Work. Over-protective partner/spouse, emphasising fear of harm or encouraging catastrophising. Manual work and job dissatisfaction.

 

The Costs of Depression in Pain

 

Social functioning, work and physical activities are all decreased whilst utilisation of medical services increases if depression coexists with pain[10]. Motivation and compliance with treatment is also affected[11]. Such negative outcomes leave little doubt as to the quality of life of such patients. Clearly pain and depression should not be seen as separate dimensions but as interactive in nature. Attempting to treat pain without considering depression is likely to be a futile venture.

 

Anxiety in Chronic Pain

 

Anxiety is a physiological state characterized by cognitive, somatic, emotional, and behavioral components producing fear and worry. Anxiety is often accompanied by physical sensations such as heart palpitations and shortness of breath whilst the cognitive component entails expectation of a diffuse and certain danger. As with depression, anxiety disorders are categorised in the DSM-IV, with subtypes including generalised anxiety disorder (GAD), panic disorder and phobias. GAD is the most commonly diagnosed anxiety disorder in chronic pain populations. The coexistence of pain and anxiety is perhaps not surprising: Both signal impending danger and the necessity for action which confer survival value to the individual.

 

Anxiety disorders are second only to depression in psychological comorbidity in chronic pain populations. Whilst anxiety is a normal response in everyone, clinical anxiety results in increased intensity and prolongation of the feelings of dread that interfere with normal functioning. Measurements of anxiety with chronic pain also show a strong association: as with depression. One such study showed a doubling in the prevalence of anxiety disorders compared to the general population[12]. Anxiety is thought to be an important mediator in the cognitive constructs of catastrophising, hypervigilance and fear avoidance in the exacerbation of pain experiences.

 

  • Catastfophising is ‘dwelling on the worst possible outcomes’. It is associated with higher disability and pain severity and is an important cognitive measure and prognostic indicator in chronic pain patients.
  • Hypervigilance in pain is the increased attendance to pain and decreased ability to distract oneself from pain-related stimuli.
  • Fear avoidance is the avoidance of movement or activities based on fear of pain or re-injury. This is especially counterproductive for physical rehabilitation and is termed ‘kinesophobia’.

 

Measurement of Anxiety in Pain

 

As with depression many measures of anxiety states exist. The State-Trait Anxiety Inventory questionnaire is a well-validated tool used in general psychology but has also been used in pain clinics. For chronic pain, more specific measures of anxiety-related to cognitive and behavioural variables have been designed. Such an instrument is the Pain Anxiety Symptoms Scale (PASS) which measures behavioural responses to pain[13]. The Fear of Pain Inventory measures degree of fear in hypothetical pain inducing situations[14]. These are more useful than general anxiety measurements and give more specific information in relation to the pain experienced. The DASS and DAPOS used for depression also measure anxiety.

 

Anxiety and Depression Coexist

 

Despite their differences in symptoms and classification, depression and anxiety seem to exist concurrently to a surprisingly frequent extent. In psychiatry, terms like ‘agitated depression’ have been coined for a state of depression that presents as anxiety which includes restlessness, insomnia and nonspecific panic.

 

Even mild anxiety symptoms can have a major impact on the course of a depressive illness. Depressed or bipolar patients with lifetime panic symptoms have significant delays in remission for depression[15]. To this end, the presence of both depression and anxiety make treatment of pain more challenging but the presence of one should alert rather than deter the diagnosis of the other.

 

Treatment of Depression and Anxiety

 

Mainstays of treatment of depression and anxiety are psychological and pharmacological. Whilst the scope of these is well beyond this article, it is worth noting that cognitive behavioural therapy, which addresses depression and anxiety, has very good evidence for efficacy in chronic pain patients[16]. Important concepts of CBT are also incorporated into Pain Management Programs for delivery to patients with different types of pain.

 

Depression and Anxiety in Acute Pain

 

Hitherto depression and anxiety have only been discussed in a chronic setting. Current multidimensional concepts of pain are equally important in the acute setting. Apart from the degree of surgical insult to tissue, psychological and environmental factors influence acute pain experience to a high degree[17].

 

Preoperative anxiety is correlated with higher pain intensity postoperatively for a variety of operations. In the hospital setting, anxiety is worsened by sleep deprivation in the postoperative period due to interruptions in the wards for observations, other patients and medications. This vicious circle is exacerbated by fear of complications, loss of control and helplessness. Admission to hospital and having an operation is a highly stressful event for most and that is often forgotten by professionals who are frequently involved in perioperative care. Preoperative depression also increases pain intensity, opioid requirements by any route and number of demands from the PCAS (Patient controlled analgesia system) in the postoperative period. Higher levels of dissatisfaction with analgesia also occur if depression coexists[18].

 

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Dr. Alex Jimenez’s Insight

From headaches to muscle tension and body soreness, pain may be all too familiar for individuals who suffer from anxiety and depression. However, many research studies have demonstrated that chronic pain, such as that resulting from conditions like arthritis or fibromyalgia, may in turn lead to a variety of mental health issues. Both anxiety and depression have been implicated to be fundamental contributors in the exacerbation of as well as in the perception of pain. As a result, many healthcare professionals have developed a treatment approach based on therapeutic strategies to help manage symptoms of anxiety and depression. By first controlling these symptoms, many doctors can safely and effectively help in the management of chronic pain. Recent research studies have found a connection between the endocannabinoid system and the management of chronic pain, as well as anxiety and depression.

 

Treatment Strategies

 

Strategies used include procedural and sensory information, relaxation and attentional strategies, hypnosis and cognitive behavioural treatments. The use of anxiolytic drugs on the morning of procedure or hypnotics the night before are also widespread.

 

Combination of procedural information of the surgery together with expected sensations felt by the patient postoperatively have yielded Level I evidence (evidence obtained from at least one properly designed randomised controlled trial) for benefits on pain perception[19]. Another meta-analysis on giving information regarding the conduct of surgical treatment showed decreased hospital stay[20].

 

Relaxation techniques involve teaching patients calming methods, including breathing techniques, self hypnosis and muscle relaxation.

 

This has been verified in a metanalysis providing Level I evidence for reducing pain as well as blood pressure and pulse[21]. Hypnosis and attention diversion from pain has also garnered evidence for effectiveness. A ‘moderate to large’ effect size on reduction of pain has been shown in yet another meta-analysis of hypnosis, in both laboratory and clinical participants[22].

 

Psychological interventions for children are also increasingly recognized and being used. Cognitive behavioural strategies are shown to be effective in procedural related pain in children and adolescents[23].

 

Techniques used involve breathing exercises, distraction and incentives. These techniques involve psychologists, parents and medical staff.

 

Even in the intensive care, mood disorders need attention. Mechanically ventilated patients without surgery or trauma are known to experience pain, which leads to increased anxiety and adverse physiological effects[24]. Analgesia and sedation thus need to be adjusted with evaluation of pain in mind.

 

There is very good evidence to implicate mood disorders, especially anxiety, in worsening pain experience in acute surgical or procedural situations. Evidence extends to oncology and paediatric patients also. As a basic strategy, careful explanation and allaying of fears should be practiced by any healthcare professional involved in interventions. This can be combined with some of the psychological techniques described above. There is a greater wealth of high level evidence for mood disorders in acute compared to chronic pain. Shorter time frames of studies and greater numbers of suitable patients for recruitment are contributory factors to this.

 

Bridging the Gap

 

What causes acute pain to become chronic? Many patients who do develop chronic pain can pin down an episode of acute pain as a precipitant[25]. Some risk factors are known. Surgical procedures like amputation, thoracotomy and radical mastectomy are notorious for causing chronic pain postoperatively. Psychosocial contributors like ‘psychological vulnerability’ preoperatively, and depression and anxiety postoperatively have been implicated[26]. Treatment or attenuation of anxiety and depression could thus be a vital component of perioperative pain control when considering longer term outcomes. Increased pain intensity is also a risk factor for chronic pain development. Treating acute pain is therefore vital for preventing chronicity.

 

Conclusion

 

Pain is one of the commonest symptoms for which patients seek medical attention. Depression and anxiety symptoms are important to consider not only in primary healthcare settings and pain clinics but also in hospital and palliative care settings. They must be borne in mind not only in adults but in children too. The education of patients of the role of depression and anxiety in pain is paramount, but awareness of these issues by healthcare professionals in all disciplines is the preceding and necessary step for good quality patient management.

 

The Endocannabinoid System

 

What is the ECS?

 

The significance of the ECS, or the endocannabinoid system, has just recently been realized and is currently being referred to as the most essential body system which you may have never heard of. Although the ECS is one of the principal systems in the body, it is not an isolated structural system like the nervous system or the vascular system. Instead, the endocannabinoid system is broadly dispersed throughout the human body and is composed of its own receptor sites, similar to little docking stations, which can in turn be found on nearly every organ in the human body.

 

What does the ECS do?

 

The ECS is the human body’s main regulatory system. It’s like an inner balancing mechanism, constantly keeping a wide range of bodily functions in equilibrium. The body produces its own endocannabinoids which modulate different biological processes throughout the body, providing these endocannabinoids with a variety of ranging consequences on everything from fertility to pain. Cannabinoid receptors can be found in the brain, nervous system, GI, or gastrointestinal, tract, bones, immune system, skin, and nearly every other organ in the body. Furthermore, the ECS helps regulate:

 

  • Appetite
  • Bone health
  • Caloric metabolism
  • Fertility
  • Immune function
  • Inflammation
  • Mood
  • Memory
  • Pain sensation
  • Skin health
  • Sleep
  • Stress response

 

Are There Any Plant Sources of Cannabinoids?

 

To put it simply, yes. We now know that many animals, from fish to birds to mammals, have their own ECS. Additionally, it’s well understood that while humans make their own cannabinoids which interact with the ECS, known as endocannabinoids, there are also compounds which interact with the ECS that are found in an assortment of plants and foods, known as phytocannabinoids. These plant-based cannabinoids either directly attach to, and also have an effect on, cannabinoid receptors, or they may even have an influence on the metabolism of endocannabinoids produced within the body. These can ultimately slow down their destruction, keeping them within the body longer.

 

Cannabis cultivated as hemp contains numerous phytocannabinoids, including tetrahydrocannabinolic acid, or THCA, cannabidiol, or CBD, tetrahydrocannabivarin, or THCV, cannabigerol, or CBG, cannabinol, or CBN, among many others. Common non-cannabis plants which contain phytocannabinoids include black pepper, clove, Echinacea, green tea, Panax ginseng, and black truffles. Within nature, chemical substances rarely act in isolation, and this is particularly true of both phytocannabinoids, which actually work together in a carefully coordinated manner.

 

What is the Distinction Between Hemp and Marijuana?

 

Hemp and marijuana are basically different cultivars of the same plant, Cannabis sativa L. A cultivar is a plant type that has been made or cultivated through a process of selective breeding. Marijuana is a sort of cannabis that has been bred to concentrate high levels of the psychoactive chemical, THC, or tetrahydrocannabinoid, for recreational and medicinal use, often containing about 18 percent  of THC. Conversely, hemp is a version of cannabis that is primarily utilized in clothing, paper, biofuels, bio-plastics, dietary supplements, cosmetics, and foods. Hemp contains less than 0.3 percent of THC as measured in the dried flowering tops.

 

In conclusion, recent research studies have found a strong connection between the psychology of chronic pain, especially the relationship between anxiety, depression and pain. For individuals with mental health issues, chronic pain can be a common symptoms which may or may not be directly associated with their specific condition. Fortunately, patients can successfully manage their anxiety, depression and chronic pain through a variety of treatments. The purpose of the article above is to demonstrate the connection between anxiety, depression and chronic pain as well as to discuss the significance of the endocannabinoid system, or ECS, and the use of cannabinoids as chronic pain treatment. Information referenced from the National Center for Biotechnology Information (NCBI). The scope of our information is limited to chiropractic as well as to spinal injuries and conditions. To discuss the subject matter, please feel free to ask Dr. Jimenez or contact us at 915-850-0900 .

 

Curated by Dr. Alex Jimenez

 

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Additional Topics: Back Pain

 

Back pain is one of the most prevalent causes for disability and missed days at work worldwide. As a matter of fact, back pain has been attributed as the second most common reason for doctor office visits, outnumbered only by upper-respiratory infections. Approximately 80 percent of the population will experience some type of back pain at least once throughout their life. The spine is a complex structure made up of bones, joints, ligaments and muscles, among other soft tissues. Because of this, injuries and/or aggravated conditions, such as herniated discs, can eventually lead to symptoms of back pain. Sports injuries or automobile accident injuries are often the most frequent cause of back pain, however, sometimes the simplest of movements can have painful results. Fortunately, alternative treatment options, such as chiropractic care, can help ease back pain through the use of spinal adjustments and manual manipulations, ultimately improving pain relief.

 

 

 

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EXTRA IMPORTANT TOPIC: Lower Back Pain Management

 

MORE TOPICS: EXTRA EXTRA: Chronic Pain Care Center

 

 

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Dr. Alexander Jimenez ♛
Advanced Chiropractic & Wellness Authority ⚕ Healthcare Educator • Injury, Sciatica Specialist • 915-850-0900 📞
We Welcome You 👊🏻.
Purpose & Passions: I am a Doctor of Chiropractic specializing in progressive, cutting-edge therapies and functional rehabilitation procedures focused on clinical physiology, total health, practical strength training, and complete conditioning. We focus on restoring normal body functions after neck, back, spinal and soft tissue injuries.

We use Specialized Chiropractic Protocols, Wellness Programs, Functional & Integrative Nutrition, Agility & Mobility Fitness Training and Cross-Fit Rehabilitation Systems for all ages.

As an extension to effective rehabilitation, we too offer our patients, disabled veterans, athletes, young and elder a diverse portfolio of strength equipment, high-performance exercises and advanced agility treatment options. We have teamed up with the cities premier doctors, therapist and trainers to provide high-level competitive athletes the possibilities to push themselves to their highest abilities within our facilities.

We’ve been blessed to use our methods with thousands of El Pasoans over the last three decades allowing us to restore our patients’ health and fitness while implementing researched non-surgical methods and functional wellness programs.

Our programs are natural and use the body’s ability to achieve specific measured goals, rather than introducing harmful chemicals, controversial hormone replacement, un-wanted surgeries, or addictive drugs. We want you to live a functional life that is fulfilled with more energy, a positive attitude, better sleep, and less pain. Our goal is to ultimately empower our patients to maintain the healthiest way of living.

With a bit of work, we can achieve optimal health together, no matter the age or disability.

Join us in improving your health for you and your family.

It’s all about: LIVING, LOVING & MATTERING! 🍎

Welcome & God Bless

EL PASO LOCATIONS

Central:
6440 Gateway East, Ste B
Phone: 915-850-0900

East Side:
11860 Vista Del Sol, Ste 128
Phone: 915-412-6677

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