Invited Special Review: Psychological Approaches for Managing Chronic Pain

Psychologists have had an important impact on the conceptualization, assessment, and treatment of chronic pain. Their contributions have been in the areas of emotional distress, behavioral limitations, cognitive mediating events, and psychosocial disruption of chronic pain. These foci have enabled them to clarify the multidimensional nature of chronic pain and to support the biopsychosocial framework as a conceptual guide for research and clinical purposes. Clinically, along with members of an interdisciplinary team, psychologists have a key role in the assessment and treatment of patients with chronic pain. Interdisciplinary collaboration allows the team to recognize important interactions between biomedical and psychosocial dimensions and to appreciate a broader conceptualization of patients' problems. The literature documents strong empirical support for operant-behavioral and cognitive-behavioral therapies for the treatment of chronic pain. On the other hand, although widely accepted from a clinical perspective, the use of motivational interviewing and motivational enhancement therapies is more recent and less well documented for use with patients with chronic pain.     

A high-risk method for studying psychosocial antecedents of chronic pain: the prospective investigation of herpes zoster.

Although patients with chronic pain are often psychologically distressed, it has been difficult to determine whether this distress is an antecedent of chronic pain or whether it is caused by the experience of living with chronic pain. The aim of this investigation was to develop a method that would allow individuals who are at risk for the development of chronic pain to be studied before their pain has become chronic. Patients with acute herpes zoster were assessed with demographic, medical, pain, and psychosocial measures. Pain was assessed in follow-up interviews at 6 weeks and 3, 5, 8, and 12 months after these initial assessments. There were no significant differences between patients who developed short-term herpes zoster pain and patients who did not develop short-term pain for any of the measures at the initial assessment, except for one measure of pain intensity. Patients who developed chronic herpes zoster pain, however, had significantly greater pain intensity, higher state and trait anxiety, greater depression, lower life satisfaction, and greater disease conviction at the initial assessment than patients who did not develop chronic pain. In discriminant analyses, disease conviction, pain intensity, and state anxiety each made a unique contribution to discriminating patients who did and who did not develop chronic pain. This study demonstrates the feasibility of investigating psychosocial antecedents of the development of chronic pain by prospectively examining the longitudinal course of herpes zoster.     

A Comprehensive Examination of the Model Underlying Acceptance and Commitment Therapy for Chronic Pain

The therapeutic model underlying Acceptance and Commitment Therapy (ACT) is reasonably well-established as it applies to chronic pain. Several studies have examined measures of single ACT processes, or subsets of processes, and have almost uniformly indicated reliable relations with patient functioning. To date, however, no study has performed a comprehensive examination of the entire ACT model, including all of its component processes, as it relates to functioning. The present study performed this examination in 274 individuals with chronic pain presenting for an assessment appointment. Participants completed a battery of self-report questionnaires, assessing multiple aspects of the ACT model, as well as pain intensity, disability, and emotional distress. Initial exploratory factor analyses examined measures of the ACT model and measures of patient functioning separately with each analysis identifying three factors. Next, the fit of a model including ACT processes on the one hand and patient functioning on the other was examined using Structural Equation Modeling. Overall model fit was acceptable and indicated moderate correlations among the ACT processes themselves, as well as significant relations with pain intensity, emotional distress, and disability. These analyses build on the existing literature by providing, to our knowledge, the most comprehensive evaluation of the ACT theoretical model in chronic pain to date.     

Integrating Pain Management in Clinical Practice

There is much evidence to suggest that psychological and social issues are predictive of pain severity, emotional distress, work disability, and response to medical treatments among persons with chronic pain. Psychologists can play an important role in the identification of psychological and social dysfunction and in matching personal characteristics to effective interventions as part of a multidisciplinary approach to pain management, leading to a greater likelihood of treatment success. The assessment of different domains using semi-structured clinical interviews and standardized self-report measures permits identification of somatosensory, emotional, cognitive, behavioral and social issues in order to facilitate treatment planning. In this paper, we briefly describe measures to assess constructs related to pain and intervention strategies for the behavioral treatment of chronic pain and discuss related psychiatric and substance abuse issues. Finally, we offer a future look at the role of integrating pain management in clinical practice in the psychological assessment and treatment for persons with chronic pain.     

Understanding Chest Pain: What Every Psychologist Should Know

Chest pain is one of the most frequent presenting complaints in Emergency Rooms and other medical settings. A considerable number of these patients do not have significant coronary artery disease. This led to plausible alternative explanations for these presenting symptoms and these patients tend to have unremarkable cardiac outcomes. Nevertheless, many studies have also documented that symptoms and related disability persist in the face of reassurances about benign cardiac status. Given the implied threat of chest pain (e.g., myocardial infarction) and the presence of chest pain symptoms in other noncardiac conditions (including anxiety and panic), it is not surprising that many of these patients present with considerable emotional distress. Consequently, chest pain symptoms represent diagnostic and treatment dilemmas for physicians and psychologists alike. The extent to which cardiac and noncardiac factors contribute to all forms of chest pain remains unknown. The function of this review is to provide mental health professionals with a primer on relevant clinical issues in chronic chest pain. We examine several common medical and psychiatric causes of chronic chest pain and selectively review (1) the relevant medical and psychiatric diagnostic and treatment considerations for chest pain and (2) the hypothetical biobehavioral mechanisms relevant to psychological intervention, (3) while expanding on existing conceptual models for understanding chest pain, and (4) offering some suggestions for future research.     

The relationship between greater mindfulness and less subjective experience of chronic pain: Mediating functions of pain management self‐efficacy and emotional intelligence

Previous research shows a connection between greater mindfulness and less subjective experience of pain. The present study examined whether pain management self‐efficacy and emotional intelligence mediate this relationship in individuals experiencing chronic pain. Two hundred participants experiencing chronic pain completed measures of mindfulness, experience of pain, pain management self‐efficacy, and emotional intelligence. Greater mindfulness was associated with less subjective experience of pain, greater pain management self‐efficacy, and more emotional intelligence. More pain management self‐efficacy and higher emotional intelligence were associated with less subjective experience of pain. Emotional intelligence and pain management self‐efficacy significantly mediated the relationship between mindfulness and pain. The connection between greater mindfulness and less subjective experience of pain may be due to mindfulness providing a foundation for emotional functioning and behavioural regulation that result in reductions in the experience of pain.     

Fibromyalgia: Predicting openness to counselling referrals

Fibromyalgia (FM) is a chronic pain condition that can negatively impact on all aspects of patients’ lives. The purpose of this study was: first, to explore the biopsychosocial factors that may contribute to adjustment to FM symptoms; second, to investigate how referrals to counselling related to patients’ ratings of their relationship with their physicians; and, last, to examine if self-reports of illness distress, emotional problems, and practical problems can predict who will be open to counselling referrals. For this cross-sectional study, data from 190 people were collected through an online survey. Statistical analysis revealed that emotional problems reported were the best predictor of variance in illness distress and contentment scores. Further, results indicated that referrals made in accord with patients’ perceptions that they would benefit from counselling may have a positive influence on how patients rate their relationships with their physicians. Finally, self-reported scores of illness distress, number of emotional problems, and number of practical problems accurately predicted who would be open to counselling referrals in 67% of cases. Research results provide support for addressing emotional issues to facilitate adjustment to FM symptoms, and for use of psychosocial measures to determine when patients with FM will be open to counselling referrals.     

The Relationship Between Agentic and Communal Personality Traits and Psychosocial Adjustment to Breast Cancer

Agency, communion, unmitigated agency (UA), and unmitigated communion (UC) are related to psychosocial health outcomes in nonclinical and medical populations. This study examined the relationship between these personality traits and emotional and interpersonal well-being, as up to 50% of women experience difficulties in psychosocial adjustment after being diagnosed with breast cancer. Seventy-four women newly diagnosed with breast cancer completed baseline assessment measures within 2 weeks prior to their first chemotherapy treatment or at the beginning of their hormonal therapy. Findings indicate that (1) agency and UA are important correlates of emotional and interpersonal adjustment and should be considered when attempting to identify women at high risk for psychosocial distress, and (2) UC deserves increased attention in behavioral medicine research, given its strong relationship with emotional distress in a breast cancer population. Thus, evidence continues to accumulate regarding the important relationship of these personality traits to psychosocial outcomes in medical populations.     

The Adaptation of Patients During the Hospitalization Period of Bone Marrow Transplantation

A longitudinally study was conducted among 42 bone marrow transplantation (BMT) patients to investigate the association between pretransplant psychosocial variables and psychophysiological outcomes during the immediate convalescence period. Family relationships (cohesion, expressiveness, and conflict) and coping resources (cognitive, social, emotional, spiritual/philosophical, and physical resources) were assessed on the admission day (Day –7 Time 1). Data on psychological distress and pain intensity were obtained on Day +7 (Time 2) and Day +14 (Time 3). The average scores at Times 2 and 3 were computed to indicate the overall adjustments of the patients during the hospitalization period after the day of actual transplant (Day 0). It was shown that higher expressiveness family relationships and higher resources to cope effectively with stressful situations were associated with less psychological distress during the above period. Both pretransplant psychosocial variables were not associated with pain intensity during hospitalization. Allogeneic transplant patients reported higher pain intensity than did autologous transplant patients. Psychological distress and pain intensity were positively correlated with each other. Our findings show that pretransplant family relationships and coping resources associate moderately with psychological distress during the immediate convalescent period of BMT. The present findings support the family-centered approach to BMT care and provide a scientific basis for pretransplant psychosocial interventions.     

A longitudinal study of psychosocial distress in breast cancer: prevalence and risk factors

This longitudinal study was conducted among 102 women with non-metastasic breast cancer to identify the time evolution and prevalence of distress at specific times through diagnosis and treatment of disease: preliminary diagnosis, surgery, definitive diagnosis and chemotherapy. Additionally, the study aimed to examine the role of demographic, medical and psychosocial factors on distress. The results indicated that prevalence of distress was higher at initial diagnosis (25%) than the following time points (approximately 17%). The differences inter-individuals in the levels of distress were observed over the four assessments. No relation between distress and demographic and medical factors was found. However, psychosocial aspects were significant risk factors. Patterns of emotional suppression and specific coping responses like helplessness/hopelessness, anxious preoccupation, cognitive avoidance and fatalism were positively related to distress, whereas fighting spirit and perceived social support showed a protective role. Moreover, helplessness/hopelessness and anxious preoccupation jointly predicted 75% of cases and 98% non-cases of distress. Finally, a mediational model between emotional suppression and distress through helplessness/hopelessness was tested. Results support the necessity of routine distress screening all through the illness. Implications of data for psychosocial interventions with breast cancer patients are highlighted.     

A longitudinal study of psychosocial distress in breast cancer: Prevalence and risk factors

This longitudinal study was conducted among 102 women with non-metastasic breast cancer to identify the time evolution and prevalence of distress at specific times through diagnosis and treatment of disease: preliminary diagnosis, surgery, definitive diagnosis and chemotherapy. Additionally, the study aimed to examine the role of demographic, medical and psychosocial factors on distress. The results indicated that prevalence of distress was higher at initial diagnosis (25%) than the following time points (approximately 17%). The differences inter-individuals in the levels of distress were observed over the four assessments. No relation between distress and demographic and medical factors was found. However, psychosocial aspects were significant risk factors. Patterns of emotional suppression and specific coping responses like helplessness/hopelessness, anxious preoccupation, cognitive avoidance and fatalism were positively related to distress, whereas fighting spirit and perceived social support showed a protective role. Moreover, helplessness/hopelessness and anxious preoccupation jointly predicted 75% of cases and 98% non-cases of distress. Finally, a mediational model between emotional suppression and distress through helplessness/hopelessness was tested. Results support the necessity of routine distress screening all through the illness. Implications of data for psychosocial interventions with breast cancer patients are highlighted.     

A prospective analysis of acceptance of pain and values-based action in patients with chronic pain.

OBJECTIVE: Acceptance of pain and values-based action appear important in the emotional, physical, and social functioning of individuals with chronic pain. The purpose of the current study was to prospectively investigate these combined processes. METHOD: 115 patients attending an assessment and treatment course for chronic pain in the U.K. completed a standard set of measures on two occasions separated by an average of 18.5 weeks. RESULTS: Correlation analyses showed that acceptance of pain and values-based action measured at Time 1 were significantly correlated with pain, pain-related distress, pain-related anxiety and avoidance, depression, depression-related interference with functioning, and physical and psychosocial disability measured at Time 2. Multiple regression analyses, in which pain and relevant patient background variables were controlled, showed that the combined acceptance and values measures accounted for between 6.5% and 27.0% of variance in six key measures of patient functioning later in time. CONCLUSION: These results support the importance of acceptance and values-related processes in relation to chronic pain. These results also encourage continued applications of a functional contextual model of psychopathology, the model underlying Acceptance and Commitment Therapy and related approaches such as Contextual Cognitive-Behavioral Therapy.     

La gestion des émotions et ses déficits,chez les personnes atteintes de douleur chronique : une revue systématisée des études relatives à l’alexithymie, à l’intelligence émotionnelle, à la régulation émotionnelle et au coping

The goal of this review is to synthesize the data of scientific literature on emotional management and its deficits in chronic pain. We used terms referenced in databases and MesH terms (of the United States National Library of Medicine) to perform a literature search in a powerful online search engine (EBSCOhost research databases). Four hundred and forty-nine papers, taken from international reviews and published of 1994 (because it is in the middle of the 1990s that this theme begins to be handle) to the end of January, 2015, are identified by a total 5 electronic databases with predefined keywords about emotions and chronic pain. Forty-six of which met the inclusion criteria, according to their title, their summary and their complete text. The findings suggest that some emotional management strategies and its deficits can maintain a vicious circle of negative emotional states with physiological and psychopathological consequences. Several studies show that alexithymia, emotional ambivalence and emotional suppression have a deleterious impact on pain, emotional distress (depression, anxiety) and disability. In spite of some contradictions concerning the nature of this effect (sensory or affective pain intensity or even duration of pain), it seems that alexithymia is a major variable implied in chronic pain. Inversely, experiential acceptance has a beneficial effect on psychological distress (depression, anxiety and stress). Emotional disclosure (of stressful or traumatic events) can decrease pain intensity but not disability and mental health. Likewise, emotional expression in daily life seems beneficial, but when the expression of the positive and negative feelings are distinguished, emotional expression of negative feelings increases pain, disability and distress. The whole of these findings emphasize the need to further research about emotional management in chronic non-cancer pain. It is necessary to identify and control the source of potential bias. Some hypotheses have been proposed to explain these findings. In the future, it would be interesting to use a multifactorial approach to investigate the interactions between various processes of emotional management in chronic pain patients.     

Entstehung und Aufrechterhaltung von chronischen Schmerzen

Chronic pain has previously been defined as lasting longer than 3 or 6 months. This criterion, however, does not adequately describe the process of pain becoming chronic. Consequently, pain chronicity is not only assessed by pain duration but by consideration of other factors, such as disability or intensity. A number of learning processes affect pain chronicity as they mediate changes in neural networks involved in pain processing. Furthermore, a number of psychosocial risk factors have been identified that affect not only the transition from acute to chronic pain but also the maintenance of chronic pain. The fear-avoidance model takes into account many of these risk factors to explain the development and maintenance of chronic musculoskeletal pain.     

Psychological Distress Reported by Patients Undergoing Limb Reconstruction Surgery: Implications for Psychological Interventions

Limb reconstruction is an orthopaedic surgical technique designed to restore or improve functioning and appearance. The aims of the present study were to investigate levels of psychological distress in adults undergoing limb reconstruction as a result of traumatic injury, to examine which variables could account for any variations in distress during and after treatment, and to ascertain the potential relevance of psychological interventions. A cross-sectional sample of patients completed measures of psychological distress, posttraumatic symptomatology, coping, social support, pain, and disability. Self-reported levels of psychological distress and posttraumatic symptoms were high but did not tend to vary across stage of treatment, suggesting that distress is not solely attributable to limb reconstruction treatment per se but to other factors. Both medical variables (pain and mobility) and psychological variables (symptoms of trauma and coping strategies) accounted for a significant percentage of the variance in HAD scores. These results suggest that both medical and psychological interventions have potential for reducing distress and increasing well-being in an orthopaedic population who are experiencing high levels of emotional distress.     

Psychosocial Subgroups, Coping, and Chronic Low-Back Pain

The purpose of this study was to compare psychosocial subgroups in terms of pain coping strategies, pain severity, physical impairment, pain behavior, affective distress, and response to pain management treatment. The Multidimensional Pain Inventory (MPI) was used to classify 67 chronic low-back pain (CLBP) patients into the following psychosocial subgroups: Dysfunctional, Interpersonally Distressed, Adaptive Coping, and Anomalous. These MPI subgroups were compared on the Pain Behavior Checklist, Behavioral Observation Measure of Pain Behavior, Revised Coping Strategies Questionnaire, and Chronic Disease Index. The Dysfunctional subgroup reported significantly more pain behavior, disability, affective distress, and catastrophizing than either the Interpersonally Distressed subgroup or Adaptive Copers, but were not significantly different on measures of adaptive coping strategies. The percentage of dropouts from treatment was significantly less among Adaptive Copers (11%) than among the Dysfunctional (33%) or Interpersonally Distressed (47%) subgroups. Differences in affective distress found among the MPI subgroups at baseline were not evident at the posttreatment assessment. The present findings support the use of MPI psychosocial subgroup analysis to enhance our understanding of differential response to chronic pain and pain management intervention.     

Cognitive-behaviour therapy in the treatment of chronic, occupational pain of the upper limbs: a 2 yr follow-up.

Nineteen Ss who experienced chronic, occupational pain of the upper limbs and who had previously completed a programme of either individual or group cognitive-behaviour therapy were followed up 2 yr later. Significant improvements on measures of depression, anxiety, coping strategies and interference in daily living were found following treatment. Such improvements were not evident for the waiting list control Ss and no difference was found between group vs individual applications of therapy. A 2 yr follow-up, significant improvements from pre-treatment levels were evident for depression, coping strategies, significant other report of disability, self monitored pain and distress caused by pain. While there was generally little evidence of relapse, a significant decline from post-treatment levels was found for the individual therapy condition compared to the group therapy condition on measures of self monitored pain and interference caused by pain. Since post-treatment levels tended to be somewhat superior for the individual therapy condition, the overall finding at 2 yr follow-up was of minimal difference in outcome for group vs individual forms of cognitive-behaviour therapy. Despite improvements from pre-treatment levels, the vast majority of Ss still reported significant and distressing levels of pain at 2 yr follow-up.     

恐惧的代价：疼痛恐惧、心理忧虑和躯体化对疼痛感知预测作用的比较

首次在无痛群体中比较疼痛恐惧、心理忧虑和躯体化对疼痛感知的预测作用大小及调节和中介关系。以多个同类量表得分的Z分数加和作为三者的因子分,以冷压痛觉测验（CPT）疼痛指标（阈限、耐受性、强度、不愉快度）为目标变量,通过分层回归及调节和中介作用分析,发现疼痛恐惧对疼痛不愉快度的预测作用最强,心理忧虑对疼痛体验（强度、不愉快度）的预测作用被疼痛恐惧完全中介,躯体化只有在高疼痛恐惧条件下才显著负向预测疼痛不愉快度。综上,疼痛恐惧是三因素中预测CPT疼痛体验的主要因素。     

癌症疼痛心理社会干预治疗的研究进展

癌症疼痛是一种复杂和多维的感受,与心理和社会因素相互影响。本文回顾近期国内外相关研究指出,许多重要的社会心理因素与疼痛有关,包括心理压力、应对方法、社会支持以及社会经济因素,它们是疼痛管理的难点。近期的国内外研究表明缓解癌痛的心理社会干预措施包括：疼痛教育、应对技能训练和催眠等,它们对疼痛治疗管理是有益的补充,同时抗抑郁药物应用对疼痛治疗有益。