Childhood adversities in patients with fibromyalgia and somatoform pain disorder

Speechlessness: a Conceptual Framework

The phenomenon of speechlessness has hardly been considered in the literature from a psychological point of view. Previous research on speechlessness is limited to the fields of neurology, medicine or psychopathology. The present review aims to consider speechlessness from a psychological perspective distinct from pathology, and to highlight its observability and possible connections to existing research in the context of emotional cognition and processing. Search terms were developed and a comprehensive, systematic literature search was conducted in various databases based on previous scientific work on the understanding of non-speech, silence and speechlessness. Only results that examined the phenomenon of speechlessness from a non-pathological or non-neurological perspective were included. A total of N = 7 publications matching the inclusion criteria were identified. The results were used to develop a procedual model for the phenomenological definition of speechlessness. The developed model differentiates the observable phenomenon of speechlessness into a non-intentional, unconscious form and a intentional, conscious form. The present work suggests that meaningful emotions and their perception and processing is a core element in the emergence of speechlessness and provides a first, psychological, non-pathological explanation of speechlessness.

Cognitive-Affective-Behavioral Pathways Linking Adversity and Discrimination to Daily Pain in African-American Adults

The tendency to ruminate, magnify, and experience helplessness in the face of pain - known as pain catastrophizing - is a strong predictor of pain outcomes and is associated with adversity. The ability to maintain functioning despite adversity - referred to as resilience - also influences pain outcomes. Understanding the extent to which pain catastrophizing and resilience influence relations between adversity and daily pain in healthy African-American adults could improve pain risk assessment and mitigate racial disparities in the transition from acute to chronic pain. This study included 160 African-American adults (98 women). Outcome measures included daily pain intensity (sensory, affective) and pain impact on daily function (pain interference). Adversity measures included childhood trauma exposure, family adversity, chronic burden from recent stressors, and ongoing perceived stress. A measure of lifetime racial discrimination was also included. Composite scores were created to capture early-life adversity (childhood trauma, family adversity) versus recent-life adversity (perceived stress, chronic burden). Increased pain catastrophizing was correlated with increased adversity (early and recent), racial discrimination, pain intensity, and pain interference. Decreased pain resilience was correlated with increased recent-life adversity (not early-life adversity or racial discrimination) and correlated with increased pain intensity (not pain-related interference). Bootstrapped multiple mediation models revealed that relationships between all adversity/discrimination and pain outcomes were mediated by pain catastrophizing. Pain resilience, however, was not a significant mediator in these models. These findings highlight opportunities for early interventions to reduce cognitive-affective-behavioral risk factors for persisting daily pain among African-American adults with greater adversity exposure by targeting pain catastrophizing.

A Clinical Trial of Psychodynamic-Interactional and Body Therapy in Somatoform Pain Disorders - Positive Interpersonal Experiences for Patients with Early Trauma

Objectives: The aim of this clinical trial was to explore whether psychodynamic-interactional therapy leads to a better outcome in the treatment of somatoform pain disorders when combined with body therapy. Methods: 30 patients diagnosed with this disorder took part in outpatient group therapies with 25 sessions. In the intervention condition, sessions based on psychodynamic-interactional and body therapy took place in weekly change, while in the control condition all sessions were based on psychodynamic-interactional therapy. Data were collected with self-report measures at the beginning and end of therapy and at the 6-months follow-up. Results: Under both conditions somatic and psychological symptoms merely remained stable from the first to the third measurement time. However, patients expressed a high level of satisfaction with the relationships in the group. Conclusions: Contrary to the assumptions, the two therapy conditions did not differ in the treatment outcome. Both conditions proved successful in providing patients with supporting interpersonal experiences.

Stress-Induced Changes in the Endogenous Opioid System Cause Dysfunction of Pain and Emotion Regulation

Early life stress, such as child abuse and neglect, and psychosocial stress in adulthood are risk factors for psychiatric disorders, including depression and anxiety. Furthermore, exposure to these stresses affects the sensitivity to pain stimuli and is associated with the development of chronic pain. However, the mechanisms underlying the pathogenesis of stress-induced depression, anxiety, and pain control remain unclear. Endogenous opioid signaling is reportedly associated with analgesia, reward, addiction, and the regulation of stress responses and anxiety. Stress alters the expression of various opioid receptors in the central nervous system and sensitivity to opioid receptor agonists and antagonists. μ-opioid receptor-deficient mice exhibit attachment disorders and autism-like behavioral expression patterns, while those with δ-opioid receptor deficiency exhibit anxiety-like behavior. In contrast, deficiency and antagonists of the κ-opioid receptor suppress the stress response. These findings strongly suggest that the expression and dysfunction of the endogenous opioid signaling pathways are involved in the pathogenesis of stress-induced psychiatric disorders and chronic pain. In this review, we summarize the latest basic and clinical research studies on the effects of endogenous opioid signaling on early-life stress, psychosocial stress-induced psychiatric disorders, and chronic pain.

Prevalence and Contextual Factors of Juvenile Fibromyalgia in a Population-Based Italian Sample of Children and Adolescents

Juvenile Fibromyalgia (JFM) is poorly known, leading to delay in the identification of the syndrome. On the other hand, early diagnosis in children is important to prevent the worsening of the disease. This study aims to estimate the prevalence of JFM in an Italian population-based convenience sample, using different criteria (2010 and 2016 ACR, Yunus and Masi), by involving family pediatricians. It also aims to assess the relationships between JFM and contextual factors of the children and their parents, as well as to raise awareness of JFM among pediatricians. Children's data were collected using an ad hoc electronic questionnaire. Overall, 7275 questionnaires were collected (48.5% females; mean age: 8.2 ± 3.6 years). Thirty-eight children (0.5%) met the 2010 ACR criteria, and 4 (0.1%) met the 2016 ACR criteria. The likelihood of meeting the 2010 ACR criteria was significantly higher for children older than 8 years (OR: 2.42), those who had injuries during the leisure time that caused persistent pain (OR: 6.49), whose parents (at least one) had a diagnosis of fibromyalgia (OR: 2.54) or diffuse pain (OR: 9.09). In conclusion, 2010 ACR criteria are confirmed as the more appropriate for children and adolescents and the analysis of contextual factors suggests the need for family pediatricians to pay particular attention to the most important predictors of JFM.

Efficacy and safety of hyperbaric oxygen therapy for fibromyalgia: a systematic review and meta-analysis

OBJECTIVE

To investigate the efficacy and safety of hyperbaric oxygen therapy (HBOT) for fibromyalgia (FM).

DESIGN

A systematic review and meta-analysis.

DATA SOURCES

PubMed, EMBASE, Cochrane Library, Web of Science, VIP (China Science and Technology Journal Database), CNKI (China National Knowledge Infrastructure) and WanFang database were searched from from inception to 22 October 2022.

ELIGIBILITY CRITERIA

We included clinical trials (randomised controlled and non-randomised controlled trials) of HBOT for FM.

DATA EXTRACTION AND SYNTHESIS

Two researchers independently screened the literature, extracted data and evaluated the quality of the included studies, with disagreements resolved by a third researcher. The Cochrane Collaboration checklists and the Methodological Index for Non-randomised Studies were used to assess the risk of bias. Meta-analysis was performed by RevMan V.5.4.1 software. Random effect models were used for meta-analysis.

RESULTS

Nine studies were included in this review, with a total of 288 patients. For pain assessment, we combined the results of the Visual Analogue Scale and Widespread Pain Index. The results showed that HBOT could relieve the pain of FM patients compared with the control intervention (standardised mean difference=-1.56, 95% CI (-2.18 to -0.93), p<0.001, I 2=51%). Most included studies reported that HBOT ameliorated tender points, fatigue, multidimensional function, patient global and sleep disturbance in FM. Adverse events occurred in 44 of 185 patients (23.8%). Twelve patients (6.5%) withdrew because of adverse reactions. No serious adverse events or complications were observed.

CONCLUSIONS

HBOT might have a positive effect in improving pain, tender points, fatigue, multidimensional function, patient global and sleep disturbance in FM, with reversible side effects. Low pressure (less than 2.0 atmospheric absolute) may be beneficial to reduce adverse events in FM. Further studies should be carried out to evaluate the optimal protocol of HBOT in FM.

PROSPERO REGISTRATION NUMBER

CRD42021282920.

Comorbidities of bladder pain syndrome in the context of the HITOP distress category: a systematic review and meta-analysis

INTRODUCTION AND HYPOTHESIS

The aim of this systematic review and meta-analysis is, looking at different care settings, to examine prevalence rates of psychological distress-level comorbidities in female interstitial cystitis/bladder pain syndrome (IC/BPS) patients, their impact on Quality of Life (QoL), and the correlation between such comorbidities and symptom severity.

METHODS

A systematic literature search according to PRISMA guidelines was conducted in PubMed, PsycInfo, Web of Science, Science Direct, and Google Scholar.

RESULTS

Twenty-nine studies were found that met inclusion criteria. Prevalence rates of depression and anxiety are higher in IC/BPS patients compared to the general population; however, due to a wide array of measurements, statistical comparisons between care settings were only possible in two cases showing mixed results. No studies meeting inclusion criteria exist that examine PTSD and borderline personality disorder, though rates of past traumatic experiences seem to be higher in patients than in healthy controls. Psychological comorbidities of the distress category, especially depression, are found in most studies to be related to symptom severity, also yielding statistically significant associations.

CONCLUSIONS

While there is still need for studies focused on some of the comorbidities as well as on different care settings, the data already show that psychological comorbidities of the distress category play an important role in IC/BPS patients regarding suffering, QoL, and symptom severity, thus emphasizing the need for highly specialized interdisciplinary treatment.

Central sensitization in opioid use disorder: a novel application of the American College of Rheumatology Fibromyalgia Survey Criteria

Central sensitization may be an underlying mechanism linking chronic pain and opioid use disorder associated with opioid use disorder onset, maintenance, escalation, treatment delay, and relapse.

Introduction:

Central sensitization (CS) involves dysfunctional central nervous system pain modulation resulting in heightened pain perception. Central sensitization is not commonly assessed among patients with opioid use disorder (OUD), despite the fact that pain has been implicated in the development, maintenance, and relapse of OUD and chronic opioid use may produce opioid-induced hyperalgesia. Central sensitization is a plausibly important mechanism underlying the complex relationship between OUD and chronic pain. However, this premise is largely untested.

Methods:

Participants with OUD (n = 141) were recruited from an academic addiction treatment center in Columbus, Ohio. An established surrogate measure of CS, the American College of Rheumatology 2011 Fibromyalgia Survey Criteria, was administered using electronic survey. Participants also responded to questions about pain interference (Brief Pain Inventory), quality of life (RAND-36), and items regarding pain beliefs and expectations of pain and addiction treatment. Descriptive analyses, Spearman rho correlations, and Mann–Whitney U tests were performed.

Results:

Hypothesized relationships were confirmed between degree of CS, pain interference, and health-related quality of life. Degree of CS was also positively correlated with greater endorsement of pain as a reason for the onset, maintenance, and escalation of OUD; treatment delay; and OUD relapse. Participants with the American College of Rheumatology 2011 Fibromyalgia Survey Criteria ≥13 had significantly greater endorsement of pain as a reason for delaying OUD treatment, continuing and increasing opioid use, and precipitating OUD relapse.

Conclusions:

This study provides early evidence CS may underlie previously observed connections between clinically salient features of chronic pain and OUD, potentially informing future mechanistic research and precision treatment.

Is Chronic Pain a Disease?

It was not until the twentieth century that pain was considered a disease. Before that it was managed medically as a symptom. The motivations for declaring chronic pain a disease, whether of the body or of the brain, include increasing its legitimacy as clinical problem and research focus worthy of attention from healthcare and research organizations alike. But 1 problem with disease concepts is that having a disease favors medical solutions and tends to reduce patient participation. We argue that chronic pain, particularly chronic primary pain (recently designated a first tier pain diagnosis in International Diagnostic Codes 11), is a learned state that is not intransigent even if it has biological correlates. Chronic pain is sometimes a symptom, and may sometimes be its own disease. But here we question the value of a disease focus for much of chronic pain for which patient involvement is essential, and which may need a much broader societal approach than is suggested by the disease designation. PERSPECTIVE: This article examines whether designating chronic pain a disease of the body or brain is helpful or harmful to patients. Can the disease designation help advance treatment, and is it needed to achieve future therapeutic breakthrough? Or does it make patients over-reliant on medical intervention and reduce their engagement in the process of recovery?

Milnacipran for the Treatment of Fibromyalgia

Purpose of review

This is a comprehensive review of the literature regarding the use of milnacipran in treating fibromyalgia. A chronic pain disorder with other system disturbances, fibromyalgia is often resistant to many therapeutic approaches. This review presents the background, evidence, and indications for using milnacipran as a treatment option for this condition.

Recent Findings

The definition of fibromyalgia has evolved over many years as it is a relatively tricky syndrome to measure objectively. Today, it is characterized by chronic, widespread pain accompanied by alterations in sleep, mood, and other behavioral aspects. A variety of therapeutic regimens currently used to treat the syndrome as a singular approach are rarely effective.Milnacipran is one of three drugs currently approved by the FDA for the treatment of fibromyalgia. It acts as a serotonin and norepinephrine reuptake inhibitor, which results in decreased pain transmission. Milnacipran remains an effective treatment option for fibromyalgia in adults and needs to be further evaluated with existing therapeutic approaches.

Summary

Fibromyalgia is a broad-spectrum disorder primarily characterized by chronic pain coupled with disturbances in cognitive functioning and sleep. The progression of this syndrome is often debilitating and significantly affects the quality of life. Milnacipran is one of three FDA-approved drugs used to alleviate the symptom burden and is comparatively more therapeutic in specific domains of fibromyalgia. A more holistic approach is needed to treat fibromyalgia effectively and further research, including direct comparison studies, should be conducted to fully evaluate the usefulness of this drug.

Endogenous Modulation of Pain: The Role of Exercise, Stress, and Cognitions in Humans

BACKGROUND

Pain is a complex and highly subjective phenomenon that can be modulated by several factors. On the basis of results from experimental and clinical studies, the existence of endogenous pain modulatory mechanisms that can increase or diminish the experience of pain is now accepted.

METHODS

In this narrative review, the pain modulatory effects of exercise, stress, and cognitions in humans are assessed.

RESULTS

Experimental studies on the effect of exercise have revealed that pain-free participants show a hypoalgesic response after exercise. However, in some patients with chronic pain, this response is reduced or even hyperalgesic in nature. These findings will be discussed from a mechanistic point of view. Stress is another modulator of the pain experience. Although acute stress may induce hypoalgesia, ongoing clinical stress has detrimental effects on pain in many patients with chronic pain conditions, which have implications for the understanding, assessment, and treatment of stress in patients with pain. Finally, cognitive strategies play differing roles in pain inhibition. Two intuitive strategies, thought suppression and focused distraction, will be reviewed as regards experimental, acute, and chronic pain.

CONCLUSION

On the basis of current knowledge on the role of exercise, stress, and cognitive pain control strategies on the modulation of pain, implications for treatment will be discussed.

Effect of childhood trauma on disease severity in patients with fibromyalgia: The mediating role of psychological resilience

Objectives

This study aims to investigate the effect of childhood traumas on the disease severity in fibromyalgia and evaluate the mediating role of psychological resilience in this effect.

Patients and methods

Between June 2017 and January 2018, this study included a total of 80 female patients (mean age: 31.9±4.0 years; range, 20 to 40 years) with fibromyalgia according to the 2010 American College of Rheumatology fibromyalgia diagnostic criteria. All patients were evaluated using the sociodemographic data form, Resilience Scale for Adults (RSA), Childhood Trauma Questionnaire (CTQ), and Fibromyalgia Impact Questionnaire (FIQ).

Results

A positive correlation was observed between the FIQ and CTQ total scores, emotional abuse, physical abuse, and physical neglect scores. The FIQ was negatively correlated with the RSA scores. Path analysis conducted to evaluate mediating effect of psychological resilience revealed that psychological resilience had a mediator role in the correlation between FIQ and emotional abuse, physical abuse, and physical neglect scores.

Conclusion

The main finding of this study is the protective effect of psychological resilience -improvable capacity to cope with early life traumas- on fibromyalgia symptoms that leads to negative functioning of several aspects.

Differences in depression, anxiety and stress disorders between fibromyalgia associated with rheumatoid arthritis and primary fibromyalgia

Fibromyalgia (FM) was frequently observed in patients with rheumatoid arthritis (RA). We aimed to evaluate the differences in psychiatric comorbidities and life adversities between patients with Rheumatoid arthritis + FM (secondary fibromyalgia [SFM]) and people with primary FM (PFM). In a cross-sectional, observational study, patients with PFM and SFM underwent a structured interview for the lifetime diagnosis of major depression (MDD), panic disorder (PD) and post-traumatic stress disorder (PTSD) and were assessed for childhood/adulthood adversities and FM-related symptoms severity. Thirty patients with PFM and 40 with SFM were recruited. The univariate analysis showed that the lifetime rates of MDD were significantly higher in PFM versus SFM (76.7 % and 40%, respectively, p < 0.003), as well as the rates of PD (50 % and 15%, respectively, p < 0.003), whereas there was no difference in PTSD rates. The rates of sexual abuse and physical neglect were significantly higher in PFM patients versus SFM patients (p < 0.005 and p < 0.023). Life events occurring before FM onset were different in PFM and SFM groups. In the logistic regression model, lifetime PD and physical neglect remain independent risk factors for PFM. PFM and SFM differ in psychiatric comorbidities and environmental adversities, suggesting that common pathogenesis may develop through different pathways.

Resilience as a Mediator between Adverse Childhood Experiences and Prescription Opioid Misuse among U.S. Adults

Studies have shown some linkage between adverse childhood experiences (ACEs) and prescription opioid misuse. While preventable, once an individual is exposed to ACEs, they can have irreparable health impacts. Resilience could have protective effects on preventing those with ACEs from adulthood health-risk behaviors. Objectives: To examine how resilience mediates the association between ACEs and adulthood prescription opioid misuse among U.S. adults. Methods: Adult respondents (n = 33,613) from the National Epidemiologic Survey on Alcohol and Related Conditions-III (2012-2013) were included. A count of ten types of ACEs constituted the ACE score (range: 0-10). A latent variable was created to measure resilience based on the Connor-Davidson Resilience Scale. Generalized structural equation modeling (GSEM) was utilized to conduct the mediation analysis. The Problem Behavior Theory was used to guide covariate selection. Results: The GSEM measurement model estimated the latent variable resilience and determined that tolerance of negative effects, self-control, acceptance of change, and spiritual influence were all associated with resilience, holding personal competence constrained for estimation purposes. Respondents with a higher ACE score were more likely to misuse prescription opioids in the past year (OR = 1.08; p < 0.01), where 40.8% of the association was mediated by resilience (indirect effect OR = 1.06). Conclusion: Reducing prescription opioid misuse is an essential step in alleviating the current opioid epidemic. Findings suggested that resilience mediated the relationship between ACEs and adulthood prescription opioid misuse. To prevent adults with ACEs from misusing prescription opioids, interventions designed to address ACEs' impact should include behavioral and educational components for enhancing the priority dimensions of resilience.

The role of lifetime stressors in adult fibromyalgia: systematic review and meta-analysis of case-control studies

BACKGROUND

Fibromyalgia is a chronic condition characterised by widespread musculoskeletal pain. Although accumulating evidence suggests that exposure to stressful events increases the risk for this complex disorder, this is the first meta-analysis to compare the impact of a full range of lifetime stressors (e.g. physical trauma through to emotional neglect) on adult fibromyalgia.

METHODS

This review was performed in accordance with PRISMA guidelines. Random-effects models examined associations between different stressor exposures and fibromyalgia status with meta-regression investigating the effects of publication year and study quality on effect sizes.

RESULTS

Nineteen studies were included in the meta-analysis. Significant associations with fibromyalgia status were observed for all six exposure types examined: odds ratios (OR) were highest for physical abuse (OR 3.23, 95% confidence interval 1.99-5.23) and total abuse (3.06, 1.71-5.46); intermediate for sexual abuse (2.65, 1.85-3.79) and smaller for medical trauma (1.80, 1.19-2.71), other lifetime stressors (1.70, 1.31-2.20), and emotional abuse (1.52, 1.27-1.81). Results were not significantly changed when childhood, as opposed to adult, exposures were used in studies that reported both. Meta-regression analyses demonstrated no effect of publication year or study quality on effect sizes.

CONCLUSIONS

This study confirmed a significant association between stressor exposure and adult fibromyalgia with the strongest associations observed for physical abuse. Limitations related to current available literature were identified; we provide several suggestions for how these can be addressed in future studies. Stressors are likely to be one of many risk factors for fibromyalgia which we argue is best approached from a biopsychosocial perspective.

Clinical Manifestations of Trauma Exposure in Fibromyalgia: The Role of Anxiety in the Association Between Posttraumatic Stress Symptoms and Fibromyalgia Status

Little research has investigated how traumatic experiences relate to fibromyalgia (FM). We explored the presence of trauma exposure in a sample of Spanish participants with FM and examined the associations between (a) the number and type of traumatic experiences and posttraumatic stress disorder (PTSD) symptoms and (b) the severity of clinical manifestations in FM, testing for possible mediation models. Participants were 173 FM patients and 53 healthy controls aged 24 to 66 years. Traumatic event type (physical trauma, physical and sexual abuse, psychological trauma), PTSD symptoms, pain intensity, sleep disturbance, anxiety, depression, coping style, and daily functioning were evaluated via self-report. Fibromyalgia patients reported a higher percentage of trauma exposure than controls, more traumatic experiences (mainly emotional and physical trauma), and more PTSD symptoms, Hedges' gs/Cohen's ds = 0.42-0.76. Most FM patients reported having experienced their most distressing traumatic experience and PTSD symptoms before FM diagnosis. PTSD symptom severity was associated with more pain, sleep disturbances, anxiety, depression, coping style, and functional impairment, rs = .23-.33, ps = .025-.008. A multiple mediation analysis showed a significant indirect effect of anxiety in the association between PTSD symptoms and daily functioning. In a subset of FM patients, PTSD symptoms were associated with major clinical symptoms. The results suggest future research should explore the effectiveness of trauma-focused therapy compared to standard cognitive behavioral therapy for these patients.

Pain in neuropsychiatry: Insights from animal models

Pain is the most common symptom reported in clinical practice, meaning that it is associated with many pathologies as either the origin or a consequence of other illnesses. Furthermore, pain is a complex emotional and sensorial experience, as the correspondence between pain and body damage varies considerably. While these issues are widely acknowledged in clinical pain research, until recently they have not been extensively considered when exploring animal models, important tools for understanding pain pathophysiology. Interestingly, chronic pain is currently considered a risk factor to suffer psychiatric disorders, mainly stress-related disorders like anxiety and depression. Conversely, pain appears to be altered in many psychiatric disorders, such as depression, anxiety and schizophrenia. Thus, pain and psychiatric disorders have been linked in epidemiological and clinical terms, although the neurobiological mechanisms involved in this pathological bidirectional relationship remain unclear. Here we review the evidence obtained from animal models about the co-morbidity of pain and psychiatric disorders, placing special emphasis on the different dimensions of pain.

Insular Cortical Thickness in Patients With Somatoform Pain Disorder: Are There Associations With Symptom Severity and Childhood Trauma?

BACKGROUND

Studies show significant alterations in insular cortical thickness in patients with somatoform pain disorder (SPD). Additionally, associations between childhood maltreatment and morphometric alterations in insular cortex have been observed. Since patients with SPD often report about adverse childhood experiences, we were interested in the interrelationship of exposure to childhood maltreatment and insular cortical thickness in patients with SPD.

METHODS

Fifteen adult patients with SPD (ICD-10 F 45.40/41, DSM-Code 307.80) and thirteen healthy adult controls underwent T1-weighted MR brain imaging. In the voxel-based morphometry (VBM) analysis we compared whole brain cortical thickness between patients and controls using a Student's two-sampled t-test (p < .05). Then we performed a secondary analysis to detect differences in cortical thickness levels in the insular cortex between both groups. For further analysis of differences in insular cortical thickness we used gender, age, depressive symptoms [Patient Health Questionnaire (PHQ)-9], and whole brain cortical thickness as nuisance covariates. Subsequently we explored associations between insular cortical thickness, symptom severity (PHQ-15) and past experiences of childhood maltreatment (CTQ) in both groups.

RESULTS

Patients showed reduced insular cortical thickness in a subregion of right Brodmann area (BA) 13 (anterior part of the insular cortex), whereas whole brain cortical thickness did not differ between groups. The between-group difference in the identified insular subregion of right BA 13 was not diminished by any of the covariates. This implies that the reduction in cortical thickness in the identified insular subregion might be due to a specific group effect. The effect sizes indicate that the group of patients experienced more childhood maltreatment than the control group. Nonetheless, significant correlations of insular cortical thickness with symptom severity and childhood maltreatment in the total collective could not be demonstrated for the group of patients.

CONCLUSIONS

Our data suggest that alterations in the identified insular subregion of right BA 13 are associated with somatoform pain, independent of gender, age, or coincident depression levels. To identify significant associations of insular cortical thickness and experiences of childhood maltreatment in patients with SPD investigations within larger samples are highly recommended.

[Bio-Psycho-Social Therapy for Stress-Induced Chronic Pain]

Bio-Psycho-Social Therapy for Stress-Induced Chronic Pain Abstract. Against the background of latest neurobiological and epigenetic findings the bio-psycho-social model of disease is outlined often misinterpreted in the context of chronic pain. It represents the basic principle for a personalized treatment of stress-induced chronic pain. Consequences for diagnostic procedures are delineated to detect this pathogenetic subgroup of chronic pain patients (e.g. fibromyalgia, back pain, temporomandibular dysfunction, tension headache). Finally, the principles of a bio-psycho-social treatment program with high efficiency are presented.

Child Maltreatment, Chronic Pain, and Other Chronic Health Conditions in Youth in Foster Care

Childhood maltreatment is associated with chronic pain in adults. The goals of this study were 1) to examine this relation in youth placed in foster care with high levels of maltreatment exposure, and 2) to investigate the relation between maltreatment frequency and acute pain, and maltreatment frequency and general chronic health condition. Participants included 403 youth ages 8-19 who resided in foster or residential/group homes. Youth with more maltreatment events had higher odds of chronic pain in a dose response fashion. There was no significant relation between maltreatment type and pain diagnosis, or maltreatment and general chronic health condition. This study examined both self- and case file report of maltreatment frequency and type in association with chronic pain, acute pain, and general chronic health condition in a sample of youth in foster care, providing evidence that more maltreatment exposure increases the likelihood of chronic pain, even in youth. This suggests that it may not take decades for the overloaded stress response system to lead to a serious pain condition, but that this process may occur much earlier in the lifespan. The findings have important implications for professionals working to prevent and treat the effects of child maltreatment or chronic pain.

Shared Genetic Etiology of Hwabyung (Anger Syndrome) and Somatization Symptoms in South Korean Adolescent and Young Adult Twins

Somatization is known to be more prevalent in Asian than in Western populations. Using a South Korean adolescent and young adult twin sample (N = 1754; 367 monozygotic male, 173 dizygotic male, 681 monozygotic female, 274 dizygotic female and 259 opposite-sex dizygotic twins), the present study aimed to estimate heritability of somatization and to determine common genetic and environmental influences on somatization and hwabyung (HB: anger syndrome). Twins completed self-report questionnaires of the HB symptoms scale and the somatization scale via a telephone interview. The results of the general sex-limitation model showed that 43% (95% CI [36, 50]) of the total variance of somatization was attributable to additive genetic factors, with the remaining variance, 57% (95% CI [50, 64]), being due to individual-specific environmental influences, including measurement error. These estimates were not significantly different between the two sexes. The phenotypic correlation between HB and somatization was .53 (p &lt; .001). The bivariate model-fitting analyses revealed that the genetic correlation between the two symptoms was .68 (95% CI [.59, .77]), while the individual-specific environmental correlation, including correlated measurement error, was .41 (95% CI [.34, .48]). Of the additive genetic factors of 43% that influence somatization, approximately half (20%) were associated with those related to HB, with the remainder being due to genes unique to somatization. A substantial part (48%) of individual environmental variance in somatization was unrelated to HB; only 9% of the environmental variance was shared with HB. Our findings suggest that HB and somatization have shared genetic etiology, but environmental factors that precipitate the development of HB and somatization may be largely independent from each other.

Adverse Childhood Experiences and Trauma-Informed Care in Rehabilitation Clinical Practice

Adverse childhood experiences (ACEs) contribute to physical, behavioral, and mental health issues throughout the lifespan and, because of their prevalence, constitute a significant public health issue. Practitioners in all health care disciplines need to be knowledgeable about ACEs and prepared to address them. ACEs can contribute to conditions that lead patients to seek rehabilitation care, and therefore a framework is needed that enables rehabilitation professionals to understand the effects of ACEs and how to discuss them with patients. This article summarizes ACE research and its clinical relevance, presents an overview of the related topic of trauma-informed care, and introduces rehabilitation professionals to practical tools for incorporating ACE- and trauma-informed care into clinical practice.

There is growing acknowledgement across all health care disciplines of the impact of ACEs. ACEs are understood as stressful, potentially traumatic events that may have lasting negative effects on health and well-being. Since the 1990s, when landmark research found striking associations between early life stress and adversity and a wide range of chronic physical, behavioral, and mental health issues, international attention to ACEs as a major public health issue has grown.1, 2 ACE-related research has identified strong correlations between chronic disease, stress, and prior experience. Eighty-six percent of health care dollars in the United States are spent on chronic diseases, and a population health strategy should include empowering, person-centered, low-risk, low-cost, self-management skill-building practices to help patients manage the stress response.³

Though a relevant consideration for all care provision, the biopsychosocial framework may be particularly important for understanding and working with chronic health conditions.4, 5, 6, 7 For example, chronic pain affects 116 million in the United States⁸ and may be a key force in driving patients to seek rehabilitation services. Patients need their providers to skillfully and comprehensively navigate the intersection of mental, emotional, and physical components of their healing process. Given the prevalence of ACEs and their potential contribution to chronic pain, among other conditions, rehabilitation professionals should be prepared to address ACEs in the clinical setting as a possible underlying contributor to the condition for which treatment is sought. This article provides an overview of ACEs research and the health effects that can result from ACEs and introduces a trauma-informed practical guide for rehabilitation professionals to use in clinical encounters.

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Adverse childhood experiences (ACEs) contribute to a broad spectrum of health challenges across the lifespan and constitute a significant public health issue.

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Rehabilitation professionals routinely work with individuals experiencing health challenges that may be linked to ACEs.

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Models of trauma-informed care and resilience-building approaches assist rehabilitation professionals in contributing to a solution to the prevalence of ACEs and chronic stress in the population.

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A novel schema is presented to assist rehabilitation professionals in navigating the topic of ACEs in clinical care.

Prevalence of Axonal Sensory Neuropathy With IgM Binding to Trisulfated Heparin Disaccharide in Patients With Fibromyalgia

OBJECTIVE

To assess the intraepidermal nerve fiber density in patients diagnosed with fibromyalgia (FM) and to evaluate the role of IgM binding to trisulfated heparin disaccharide (TS-HDS) in these patients.

METHODS

FM is a poorly understood pain disorder with several proposed pathophysiologic mechanisms. It is characterized by widespread pain, fatigue, and sleep abnormalities. Small fiber neuropathy (SFN) has been proposed as an underlying mechanism, and patients with FM have been shown to have a reduction in the intraepidermal nerve fiber density. An underlying inflammatory process that could be a result of autoimmune phenomena has also been suggested. Non-length-dependent SFN (NLDSFN) has been shown to have a higher incidence of autoimmune disease. Twenty-two patients with established diagnosis of FM underwent skin biopsy at 2 sites; 10 cm above the lateral malleolus and 10 cm above the patella. Serum IgM binding to TS-HDS was assayed using an ELISA method.

RESULTS

A total of 5/22 patients had positive TS-HDS antibodies; of these, 4 had NLDSFN (P = 0.0393). Comparison with a control group at Washington University showed no significant difference in percentage with TS-HDS antibodies (P = 0.41). When compared with Washington University database of skin biopsy, there was a trend for an increased percentage of NLDSFN in patients with FM (P = 0.06).

CONCLUSIONS

This study further supports the hypothesis that a subgroup of patients with FM has SFN. We suggest a correlation between the presence of NLDSFN and TS-HDS antibodies.

Cumulative Childhood Adversity as a Risk Factor for Common Chronic Pain Conditions in Young Adults

OBJECTIVE

Multiple and specific types of childhood adverse events are risk factors for chronic pain conditions. Although both can covary, no study has evaluated one aspect while controlling for the other. Therefore, the current study examined whether more adverse events would be a risk factor for common chronic pain conditions and pain medication use in young adults after controlling for different adversity types such as physical, emotional, and sexual traumatic events or vice versa.

METHODS

This cross-sectional study recruited 3,073 undergraduates (72% female, mean age = 18.8 years, SD = 1.4 years) who completed the survey for current health status and early life traumatic events.

RESULTS

More adverse events were associated with a 1.2-1.3-fold increase in the odds of any chronic pain, chronic back pain, headache, and dysmenorrhea with adjusting for adversity types, but they were not associated with the risk of comorbid pain conditions and use of pain medications. In contrast, specific adversity types were unrelated to chronic pain conditions when controlling for the number of adverse events.

CONCLUSIONS

Cumulative childhood adverse events may be a more relevant risk factor for chronic pain conditions than the experience of a specific type of adverse event. Clinicians and researchers need to evaluate cumulative childhood adversity when assessing its link to chronic pain.

Race/Ethnicity Does Not Moderate the Relationship Between Adverse Life Experiences and Temporal Summation of the Nociceptive Flexion Reflex and Pain: Results From the Oklahoma Study of Native American Pain Risk

Adverse life experiences (ALEs) are associated with hyperalgesia and chronic pain, but the underlying mechanisms are poorly understood. One potential mechanism is hyperexcitability of spinal neurons (ie, central sensitization). Given that Native Americans (NAs) are more likely to have ALEs and to have a higher prevalence of chronic pain, the relationship between ALEs and spinal hyperexcitability might contribute to their pain risk. The present study assessed temporal summation of the nociceptive flexion reflex (TS-NFR; a correlate of spinal hyperexcitability) and pain (TS-Pain) in 246 healthy, pain-free non-Hispanic whites and NAs. The Life Events Checklist was used to assess the number of ALEs. Multilevel growth models were used to predict TS-NFR and TS-Pain, after controlling for age, perceived stress, psychological problems, negative and positive affect, and painful stimulus intensity. ALEs and negative affect were significantly associated with greater pain, but not enhanced TS-Pain. By contrast, ALEs were associated with enhanced TS-NFR. Race did not moderate these relationships. This finding implies that ALEs promote hyperalgesia as a result of increased spinal neuron excitability. Although relationships between ALEs and the nociceptive flexion reflex/pain were not stronger in NAs, given prior evidence that NAs experience more ALEs, this factor might contribute to the higher prevalence of chronic pain in NAs. PERSPECTIVE: This study found a dose-dependent relationship between ALEs and spinal neuron excitability. Although the relationship was not stronger in NAs than non-Hispanic whites, given prior evidence that NAs experience more ALEs, this could contribute to the higher prevalence of chronic pain in NAs.

DNA Methylation in Healthy Older Adults With a History of Childhood Adversity-Findings From the Women 40+ Healthy Aging Study

Background: Adversity in early development seems to increase the risk of stress-related somatic disorders later in life. Physiologically, functioning of the hypothalamic-pituitary-adrenal and hypothalamic-pituitary-gonadal axes is often discussed as long-term mediators of risk. In particular, DNA methylation in the glucocorticoid receptor gene promoter (NR3C1) has been associated with type and strength of early life adversity and subsequent effects on HPA axis signaling in humans. Animal studies, moreover, suggest changes in DNA methylation in the estrogen receptor gene (ERα) upon early life adversity. We investigated the association of type and severity of childhood adversity with methylation in NR3C1 and ERα and additionally considered associations between methylation and steroid hormone secretion. Methods: The percentage of methylation within the NR3C1 promoter and the ERα shore was investigated using dried blood spot samples of 103 healthy women aged 40-73 years. Childhood adversity was examined with the Childhood Trauma Questionnaire. Linear regression analyses were performed with methylation as dependent variable and the experience of emotional abuse and neglect, physical abuse and neglect, and sexual abuse (compared to non-experience) as independent variables. All analyses were controlled for age, BMI, annual household income, and smoking status and were adjusted for multiple testing. Results: Overall, over 70% of the sample reported having experienced any kind of abuse or neglect of at least low intensity. There were no significant associations between childhood adversity and methylation in the NR3C1 promoter (all p > .10). Participants reporting emotional abuse showed significantly higher methylation in the ERα shore than those who did not (p = .001). Additionally, higher levels of adversity were associated with higher levels of ERα shore methylation (p = .001). Conclusion: In healthy women, early life adversity does not seem to result in NR3C1 promoter hypermethylation in midlife and older age. This is the first study in humans to suggest that childhood adversity might, however, epigenetically modify the ERα shore. Further studies are needed to gain a better understanding of why some individuals remain healthy and others develop psychopathologies in the face of childhood adversity.

Hyperbaric Oxygen Therapy Can Induce Neuroplasticity and Significant Clinical Improvement in Patients Suffering From Fibromyalgia With a History of Childhood Sexual Abuse-Randomized Controlled Trial

Background: Fibromyalgia syndrome (FMS), a condition considered to represent a prototype of central sensitization syndrome, can be induced by different triggers including childhood sexual abuse (CSA). Recent studies have demonstrated hyperbaric oxygen therapy (HBOT) can induce neuroplasticity and improve clinical outcome of FMS. The aim of the current study was to evaluate the effect of HBOT on patients suffering from FMS with a history of CSA.

Materials and methods: A prospective randomized clinical trial conducted between July 2015 and November 2017 included women with a history of CSA who fulfilled fibromyalgia diagnosis criteria for at least 5 years prior to inclusion. Included participants (N = 30) were randomly assigned to treatment group, treated with 60 HBOT sessions and a control/crossover group received psychotherapy. After the control period, the control/crossover group was crossed to HBOT. Clinical outcomes were assessed using FMS questioners, post-traumatic stress disorder (PTSD) questioners and quality of life questioners. Objective outcome were assessed using brain function and structure imaging.

Findings: Following HBOT, there was a significant improvement in all FMS questionnaires (widespread pain index, Fibromyalgia symptoms severity scale, Fibromyalgia functional impairment), most domains of quality of life, PTSD symptoms and psychological distress. The same significant improvements were demonstrated in the control following crossover to HBOT. Following HBOT, brain SPECT imaging demonstrated significant increase in brain activity in the prefrontal cortex, orbital frontal cortex, and subgenual area (p < 0.05). Brain microstructure improvement was seen by MRI-DTI in the anterior thalamic radiation (p = 0.0001), left Insula (p = 0.001), and the right Thalamus (p = 0.001).

Conclusion: HBOT induced significant clinical improvement that correlates with improved brain functionality and brain microstructure in CSA related FMS patients.

Trial Registration:www.Clinicaltrials.gov, identifier: NCT03376269. url: https://clinicaltrials.gov/show/NCT03376269

Exploring the pre-morbid contexts in which central sensitisation developed in individuals with non-specific chronic low back pain. A qualitative study

BACKGROUND

Central sensitisation pain is a predominant mechanism in a proportion of individuals with non-specific chronic low back pain and is associated with poor outcomes. It is proposed that the pre-morbid experiences and contexts may be related to the development of central sensitisation.

OBJECTIVES

The objective of this study was to explore the pre-morbid experiences and personal characteristics of participants with central sensitisation pain from a non-specific chronic low back pain population.

METHODS

This was a qualitative, exploratory study, using a concurrent nested design within a mixed methods protocol. n=9 participants were recruited purposively based on sensory profiles and trait anxiety-related personality types. Data were collected through semi structured interviews, managed using QSR NVivo 10 software and analysed using theoretical thematic analysis.

RESULTS

Four themes emerged: developmental learning experiences, personal characteristics, sensitivity and trauma. Reported was lack of confidence, low esteem and a need to please others, physical hyper-sensitivities (smell, light, sound) and emotional sensitivity (anxiety) as well as physical hypo-sensitivity. Participants had also suffered emotional and/or physical trauma. Learning difficulties, sensory sensitivities and trauma are associated with autonomic stress responses, which in turn have been linked to physiological changes seen in central sensitisation pain.

CONCLUSION

Central sensitisation pain developed in the context of sensory processing differences related to learning difficulties, sensitivities and trauma, and personal characteristics of low confidence and control, in a group of participants with non-specific chronic low back pain. The role of pre-existing sensory processing differences, as a component of altered central nervous system function, in relation to central sensitisation pain warrants further investigation.

Embodied pain in fibromyalgia: Disturbed somatorepresentations and increased plasticity of the body schema

Fibromyalgia syndrome (FMS) is a highly prevalent, chronic musculoskeletal condition characterized by widespread pain and evoked pain at tender points. This study evaluated various aspects of body awareness in a sample of 14 women with FMS and 13 healthy controls, such as plasticity of the body schema, body esteem, and interoceptive awareness. To this end, the Rubber Hand Illusion (RHI), the Body Esteem Scale (BES), and the Body Perception Questionnaire (BPQ) were used, respectively. Consistent with increased plasticity of the body schema, FMS patients scored higher, with large or very large effect sizes, across all three domains evaluated in the RHI paradigm, namely proprioceptive drift and perceived ownership and motor control over the rubber hand. Scores on all items addressed by the BES were consistently lower among FMS subjects (2.52, SEM .19 vs 3.89, SEM .16, respectively, p < .01, Cohen’s d = .38-.66). In the FMS sample, BES scores assigned to most painful regions also were lower than those assigned to the remaining body sites (1.58, SEM .19 vs 2.87, SEM .18, respectively, p < .01). Significantly higher scores (p < .01, Cohen’s d = .51-.87) were found in the FMS sample across awareness (3.57 SEM .15 vs 1.87 SEM .11), stress response (3.76 SEM .11 vs 1.78 SEM .11), autonomic nervous system reactivity (2.59 SEM .17 vs 1.35 SEM .07), and stress style 2 (2.73 SEM .27 vs 1.13 SEM .04) subscales of the BPQ. Intensity of ongoing clinical pain was found to be strongly correlated with interoceptive awareness (r = .75, p = .002). The results suggest a disturbed embodiment in FMS, characterized by instability of the body schema, negatively biased cognitions regarding one’s own body, and increased vigilance to internal bodily cues. These manifestations may be interpreted as related with the inability of incoming sensory inputs to adequately update negatively biased off-line somatorepresentations stored as long-term memory.

Psychiatric comorbidity and childhood trauma in fibromyalgia syndrome

Objectives

In this study, we aimed to compare patients with fibromyalgia syndrome (FMS) and those with myofascial pain syndrome (MPS) and healthy women and to investigate the prevalence of childhood traumatic experiences (CTEs) in relation to comorbid mood and anxiety disorders.

Patients and methods

Between February 2014 and May 2014, a total of 136 women including 52 with FMS, 35 with MPS, and 49 healthy controls were included in the study. The Sociodemographic Data Form, Mood and Anxiety Disorders Modules of Structured Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders fourth edition (DSM-IV) Axis I Disorders (SCID-I), Fibromyalgia- related Symptom Scale (FSS), Hamilton Depression Rating Scale (HDRS), Hamilton Anxiety Rating Scale (HARS), and Childhood Trauma Questionnaire-28 (CTQ-28) were applied to participants.

Results

As a result of the semi-structured clinical interview conducted by a psychiatrist experienced in psychological trauma, the prevalence of any mood or anxiety disorder were found to be significantly more common in the FMS group. Childhood traumatic experiences, not only in general, but also with all subtypes, were also reported to be significantly more in FMS patients. Besides, only in patients with FMS, a significant relationship was found between the psychiatric diagnoses and the presence of CTEs. Furthermore, the CTQ-28 scores were correlated positively with the FSS scores as well as HDRS and HARS. Among the symptoms screened by the FSS, only crying and over-reacting to incidents were significantly associated with CTEs in FMS group.

Conclusion

Based on our study results, CTEs may play a critical role in the development of fibromyalgia and may be related with comorbid mood and anxiety disorders in FMS patients. Associating psychological symptoms such as crying or over-reacting to incidents in FMS patients should be, therefore, alerting for psychiatric consultation.

Insecure attachment style and cumulative traumatic life events in patients with somatoform pain disorder: A cross-sectional study

OBJECTIVE

Current models assume somatoform pain disorder (SPD) to be the result of a complex interaction between bio- and psychosocial factors, but the etiology is still not well understood. This study aimed to investigate the distribution of attachment style and the frequency of traumatic life events, especially childhood adversities, in patients with SPD compared to healthy controls.

METHODS

We compared 65 patients with SPD (confirmed by Structured Clinical Interview, SCID-I) to 65 age- and gender-matched healthy controls. The following questionnaires were employed: Relationship Scale Questionnaire (RSQ), Essen Trauma Inventory (ETI), Childhood Trauma Questionnaire (CTQ) and Patient Health Questionnaire (PHQ-15). A logistic regression analysis was used to identify the association between SPD and psychological factors.

RESULTS

Insecure attachment was significantly more prevalent (60%) in patients with SPD compared to healthy subjects (14%; p<0.001). Overall, 70.4% of patients with SPD reported three or more traumatic events in their life, compared with healthy subjects who reported predominantly one (40%). Patients with SPD scored significantly higher in all CTQ subscales compared to the healthy controls. The factor most strongly related with SPD was the insecure attachment style (OR=11.20, 95% CI: 1.32-94.86). Other significant predictive factors were depression (OR=3.35, 95% CI: 1.84-6.11) and number of traumatic events (OR=2.04, 95% CI: 1.06-3.92). Insecure attachment, depression symptoms and the number of traumatic events explained 86.2% of the variance.

CONCLUSIONS

The high predictive value of insecure attachment style and cumulative traumatic events emphasize their importance as risk factors of SPD.

A nociceptive stress model of adolescent physical abuse induces contextual fear and cingulate nociceptive neuroplasticities

Adolescent physical abuse impairs emotional development and evokes cingulate pathologies, but its neuronal and circuit substrates are unknown. Conditioning adolescent rabbits with noxious colorectal distension for only 2 h over 3 weeks simulated the human child abuse in amplitude, frequency, and duration. Thermal withdrawal thresholds were unchanged suggesting that sensitized spinal mechanisms may not be operable. Unchanged weight, stools, colorectal histology, and no evidence of abdominal pain argue against tissue injury or irritable bowel syndrome. Contextual fear was amplified as they avoided the site of their abuse. Conditioning impacted anterior cingulate and anterior midcingulate (ACC, aMCC) neuron excitability: (1) more neurons responded to cutaneous and visceral (VNox) noxious stimuli than controls engaging latent nociception (present but not manifest in controls). (2) Rear paw stimulation increased responses over forepaws with shorter onsets and longer durations, while forepaw responses were of higher amplitude. (3) There were more VNox responses with two excitatory phases and longer durations. (4) Some had unique three-phase excitatory responses. (5) Long-duration VNox stimuli did not inhibit neurons as in controls, suggesting the release of an inhibitory circuit. (6) aMCC changes in cutaneous but not visceral nociception confirmed its role in cutaneous nociception. For the first time, we report neuroplasticities that may be evoked by adolescent physical abuse and reflect psychogenic pain: i.e., no ongoing peripheral pain and altered ACC nociception. These limbic responses may be a cognitive trace of abuse and may shed light on impaired human emotional development and sexual function.

[Multimodal pain therapy for treatment of chronic pain syndrome. Consensus paper of the ad hoc commission on multimodal interdisciplinary pain management of the German Pain Society on treatment contents]

Multimodal pain management is a comprehensive treatment of complex chronic pain syndromes. In addition to medical therapy various other specialized therapeutic interventions based on the biopsychosocial model of pain origin and chronic pain development, are added. During the last few years treatment centers for chronic pain have been established throughout Germany. Multimodal pain management has been included in the official catalogue of the recognized medical procedures for day clinic units as well as for inpatient pain management. In daily practice there is, however, still a lack of clarity and of consistency about the components that multimodal pain management should contain. This is the reason for the ad hoc commission on multimodal interdisciplinary pain management of the German Pain Society to propose the following position paper that has been worked out in a multilevel and interdisciplinary consensus process. The paper describes the mandatory treatment measures in the four core disciplines of multimodal pain management, pain medicine, psychotherapy, exercise therapy including physiotherapy and assistant medical professions including nurses.

Family dysfunction: A comparison of chronic widespread pain and chronic localized pain

Previous studies have shown differences in the psychosocial factors related to chronic localized pain (CLP) and chronic widespread pain (CWP). However, no studies have done an evaluation of differences between CLP and CWP from the viewpoint of family functioning. We did a cross-sectional study in a tertiary care setting to investigate possible differences in the relation of CWP and CLP to family functioning.Patients with CLP (N = 126) or CWP (N = 75) were assessed for family functioning by the Family Assessment Device (FAD) and a comparison was done. Logistic regression analysis was used to estimate associations of family functioning subscales with pain status (CWP vs CLP), controlling for demographic variables, pain variables; pain duration, pain ratings, pain disability, and psychological factors; depression, anxiety, and catastrophizing. The odds ratios (ORs) for the presence of CWP were calculated.Compared to patients with CLP, patients with CWP showed a lower functional status for Roles and Affective Involvement. The ORs for CWP were significantly higher in lower functioning Roles (OR: 2.38, 95% CI: 1.21-4.65) and Affective Involvement (OR: 2.86, 95% CI: 1.56-5.24) after adjusting for demographic variables. The significant association of CWP to Roles and Affective Involvement remained after controlling for the pain variables and psychological factors.This study shows that the families of patients with CWP have poorer family functioning than those with CLP. Our findings suggest that early identification and interventions for the family dysfunction of chronic pain patients are important to the treatment and prevention of CWP.

Posttraumatic stress disorder symptoms in youth with vs without chronic pain

Chronic pain and posttraumatic stress disorder (PTSD) symptoms have been found to co-occur in adults; however, research has not examined this co-occurrence in adolescence, when pediatric chronic pain often first emerges. The aims of this study were to compare the frequency and intensity of PTSD symptoms and stressful life events in cohorts of youth with (n = 95) and without (n = 100) chronic pain and their parents and to determine the association between PTSD symptoms, health-related quality of life, and pain symptoms within the chronic pain sample. All participants completed questionnaire measures through an online survey. Findings revealed that youth with chronic pain and their parents had significantly higher levels of PTSD symptoms as compared with pain-free peers. More youth with chronic pain (32%) and their parents (20%) reported clinically significant elevations in PTSD symptoms than youth without chronic pain (8%) and their parents (1%). Youth with chronic pain also reported a greater number of stressful life events than those without chronic pain, and this was associated with higher PTSD symptoms. Among the chronic pain cohort, higher levels of PTSD symptoms were predictive of worse health-related quality of life and were associated with higher pain intensity, unpleasantness, and interference. Results suggest that elevated PTSD symptoms are common and linked to reduced functioning among youth with chronic pain. Future research is needed to examine PTSD at the diagnostic level and the underlying mechanisms that may explain why this co-occurrence exists.

The role of alexithymia: An 8-year follow-up study of chronic pain patients

OBJECTIVE

The aim of this 8-year follow-up study was to ascertain changes in alexithymia, depressiveness and pain situation in a sample of chronic pain patients and to explore the impact of alexithymia and depression on the outcome.

METHODS

Participants (n=83) were chronic non-malignant pain patients who completed self-report study questionnaires before their first visit to the pain clinic and again 8years later. Study variables consisted of pain intensity measured by the Visual Analogous Scale, the Pain Disability Scale, the Toronto Alexithymia Scale and the Beck Depression Inventory. The moderate improvement in the pain situation was estimated as a decrease of 30% or more in pain intensity or pain disability.

RESULTS

In the whole sample there was a significant decrease in pain intensity, pain disability and depressiveness, but only some of the patients achieved moderate improvement in their pain situation. Alexithymia remained stable during the 8-year period. The alexithymic patients had poorer pain situation and more depressiveness both at baseline and at follow-up. Unfavorable outcome in the pain situation was connected with male gender and alexithymia at baseline but not with depressiveness. Alexithymia and depressiveness were closely related to each other and the connection strengthened during the follow-up period.

CONCLUSION

Alexithymic depressive chronic pain patients represent a special, more disabled subgroup among chronic pain patients. The authors recommend screening for and identifying alexithymia and depression in chronic pain patients. Structural treatment protocols such as cognitive-behavioral therapy may benefit these patients. More research is needed to develop treatment interventions for alexithymic patients.

Psychosocial and psychoneuroendocrinal aspects of Takotsubo syndrome

Great advances have been made in our understanding of Takotsubo syndrome in the past decade, but the aetiology of the condition remains incompletely understood. The most established theory, that catecholamine-mediated myocardial stunning is provoked by emotional or physiological stress, is supported by the presence of supraphysiological levels of plasma catecholamines in patients with Takotsubo syndrome. For this reason, the hyperexcitability of the autonomic nervous system under conditions of physical and emotional stress is often assessed in these patients. Observational studies have indicated that a predisposing influence of chronic or traumatic stress, anxiodepressive disorders, and maladaptive personality traits are linked to the pathogenesis of Takotsubo syndrome. Chronic stress can influence autonomic function through dysregulation of the hypothalamic-pituitary-adrenal axis and contribute to the development of cardiovascular disorders. In this Perspectives article, we discuss the current knowledge of the psychoneuroendocrinological and psychosocial mechanisms underlying the pathophysiology of Takotsubo syndrome.

Increased Risk of Coronary Heart Disease in Patients with Primary Fibromyalgia and Those with Concomitant Comorbidity-A Taiwanese Population-Based Cohort Study

OBJECTIVES

Fibromyalgia has seldom been associated with coronary heart disease (CHD). The aim of this study was to evaluate the risk of CHD in patients with fibromyalgia.

METHODS

We used a dataset of one million participants, systemically scrambled from the Taiwanese national insurance beneficiaries, to identify 61,612 patients with incident fibromyalgia (ICD-9-CM 729.0-729.1) and 184,834 reference subjects matched by sex, age and index date of diagnosis in a 1:3 ratio from 2000 to 2005, with a mean 8.86 ± 2.68 years of follow-up until 2011. Risk of CHD was analyzed by Cox proportional hazard modeling.

RESULTS

Patients with fibromyalgia had a mean age of 44.1 ± 16.5 years. CHD events developed in fibromyalgia patients (n = 8,280; 15.2 per 103 person-years) and reference subjects (n = 15,162; 9.26 per 103 person-years) with a significant incidence rate ratio of 1.64 (95% confidence interval: 1.61-1.68). The adjusted hazard ratio for CHD in fibromyalgia patients relative to reference subjects was 1.47 (1.43-1.51), after adjusting for age, gender, occupation, monthly income, traditional cardiovascular comorbidities, depression and anxiety. We noted that fibromyalgia and cardiovascular comorbidities had a significant interaction effect on CHD risk (p for interaction <0.01), which was markedly enhanced in fibromyalgia patients with concomitant comorbidities relative to patients with primary fibromyalgia and reference subjects (no fibromyalgia, no comorbidity).

CONCLUSIONS

Our report shows that fibromyalgia patients have an independent risk for CHD development. Fibromyalgia patients with concomitant comorbidities have markedly increased CHD risk relative to those with primary fibromyalgia.

Parasympathetic reactivity in fibromyalgia and temporomandibular disorder: associations with sleep problems, symptom severity, and functional impairment

Despite evidence of autonomic disturbances in chronic multisymptom illnesses such as temporomandibular disorder (TMD) and fibromyalgia, additional work is needed to characterize the role of parasympathetic reactivity in these disorders. Given the high levels of comorbidity with psychiatric disorders characterized by stronger parasympathetic decline than controls in safe contexts (leading to higher arousal), it was hypothesized that individuals with TMD and fibromyalgia would respond similarly. In this preliminary investigation, 43 women with TMD (n = 17), TMD + fibromyalgia (n = 11), or neither (controls; n = 15) completed a baseline assessment of respiratory sinus arrhythmia (a measure of parasympathetic activity) followed by ongoing parasympathetic assessment during a questionnaire period. As predicted, patients showed greater parasympathetic decline during psychosocial assessment, suggesting an autonomic stance that supports defensive rather than engagement behaviors. Individual differences in parasympathetic reduction during the questionnaire period were related to a variety of physical and psychosocial variables. Although this study has a number of key limitations, including a convenience sampling approach and small group sizes, if replicated in larger samples, the findings would have important implications for the treatment of patients with these disorders.

PERSPECTIVE

Compared to controls, individuals with TMD or TMD and fibromyalgia demonstrated greater parasympathetic decline during psychosocial assessment, and individual differences in parasympathetic decline predicted negative patient outcomes. Such parasympathetic decline may demonstrate a tendency to readily perceive danger in safe environments.