Chronic pain as a symptom or a disease: the IASP Classification of Chronic Pain for the International Classification of Diseases (ICD-11)

The Effect of Cold Spray Applied Before Local Anesthesia on Anxiety and Pain in Coronary Angiography Procedure: A Randomized Controlled Study

PURPOSE

Cardiovascular diseases are a leading cause of morbidity and mortality worldwide. Clinically, various techniques are used to diagnose coronary artery diseases. Coronary angiography is considered the gold standard for the diagnosis of coronary artery disease. The aim of this study is to determine the effect of cold spray applied before local anesthesia on pain and anxiety during coronary angiography procedures.

DESIGN

The study was designed as a randomized controlled trial.

METHODS

The study was conducted in the angiography unit of a training and research hospital between January and March 2023. Data collection tools included a patient information form, Visual Analog Scale, and State-Trait Anxiety Inventory.

RESULTS

When the total mean scores of the Visual Analog Scale of the individuals in the intervention and control groups were examined, a statistically significant difference was found between the mean scores of the patients in the intervention group and the control group (P < .05). A significant difference was found between the individuals in the intervention and control groups in terms of the total scores of the state anxiety scale after cold spray (P < .001), with the mean scores of the control group higher than the intervention group.

CONCLUSIONS

The application of cold spray before local anesthesia in coronary angiography significantly reduced pain and anxiety levels.

Cancer-related pain in long-term survivors of oncological diseases: results of a survey on the current care situation

PURPOSE

The increasing survival rates of oncology patients have led to a corresponding increase in long-time survivors living with chronic cancer-related pain. Data is scarce on the care situation for this distinct clinical entity and on specific therapy requirements, such as interdisciplinary, multimodal pain therapy (IMPT). Our cross-sectional study aimed to assess the current care situation, distinct chronification factors, and optimization potential. This survey addresses this need in Germany, but also provides results with international implications.

METHODS

Via an online survey, German Pain Society members involved in the treatment of long-time survivors with chronic cancer-related pain assessed the current care situation, chronification factors, specific treatment needs, and the required practitioner's expertise. The German Pain Society's Cancer Pain Working Group created the non-validated questionnaire using the Delphi method.

RESULTS

One hundred fifty-nine Pain Society members across 70% of Germany's postal regions answered our survey. Respondents (primarily physicians, and 75% with + 6 years of experience) assessed the care situation as worse for chronic cancer-related pain compared to acute pain. Only 10% of the sites provided specific therapy for chronic cancer-related pain (mostly via outpatient treatment). Compared to non-cancer-related pain, additional, cancer-specific chronification factors were assumed, especially at psychological levels, and these need incorporating into therapies. A majority of practitioners recommended cancer-specific IMPT and specific pain expertise for this distinct clinical entity.

CONCLUSIONS

Members from the German Pain Society assume that there are relevant deficits in the care of long-term survivors with chronic cancer-related pain. The situation may be assessed differently by other groups, e.g., oncologists, and the data relates to Germany. Nevertheless, considering the raising survival rates, it can be supposed that there is reason to be concerned about an increasing care deficit. Thus, besides expanding the range of available treatment and raising awareness, IMPT with specially trained personnel should be developed to address the care needs of cancer survivors experiencing chronic cancer-related pain.

Long-term sickness absence trajectories and associated occupational and lifestyle-related factors: a longitudinal study among young and early midlife Finnish employees with pain

OBJECTIVES

This study aimed to identify distinct trajectories of long-term sickness absence (LTSA, >10 consecutive working days) among young and early midlife Finnish employees who experienced pain at baseline. It also aimed to determine the pain characteristics and occupational and lifestyle factors associated with these LTSA patterns.

DESIGN

Longitudinal occupational cohort study with register linkage.

SETTING

The largest municipal employer in Finland.

PARTICIPANTS

The study population comprised 19-39-year-old Finnish municipal employees (n=1685) who reported pain in 2017.

OUTCOME MEASURES

Prospective register data on all-cause LTSA through March 2020 were obtained from the Social Insurance Institution of Finland. Group-based trajectory modelling was used to identify distinct all-cause LTSA trajectories. Multinomial logistic regression was used to examine associations of pain characteristics and work- and lifestyle-related factors with trajectory group membership.

RESULTS

Three distinct LTSA-trajectory groups were identified: no LTSA (74%), decreasing (18%) and increasing (8%). The decreasing trajectory group had a higher prevalence of chronic or multisite pain, smoking (average marginal effects (AME) 6% points, 95% CI 2 to 11), obesity (AME 8% points, 95% CI 2 to 13), manual or routine non-manual occupation (AME 9% points, 95% CI 4 to 13) and high physical workload, after adjusting for age and gender. No predictor was identified for the increasing trajectory.

CONCLUSION

A majority of young and early midlife employees with pain had no LTSA during follow-up; however, chronic and multisite pain, smoking, overweight or obesity, lower occupational class and higher physical workload were associated with the decreasing LTSA trajectory. Interventions at workplaces and in occupational healthcare to prevent LTSA should aim at supporting employees who work with pain and have these risk factors.

Rationale and design of a large trial of perioperative ketamine for prevention of chronic post-surgical pain

BACKGROUND

Chronic post-surgical pain (CPSP) is recognised as one of the most common and debilitating complications of major surgery. Progression from acute to chronic pain after surgery involves sensitisation of central nervous system pathways with the N-methyl-D-aspartate (NMDA) receptor having a central role. Ketamine is a potent, non-selective NMDA antagonist commonly used for management of acute postoperative pain. Inconsistent but largely supportive evidence from small trials of a preventative effect of perioperative ketamine on CPSP risk suggests that a confirmative large trial is needed.

METHODS

The ROCKet (Reduction Of Chronic Post-surgical Pain with Ketamine) Trial is a multicentre, double-blind, placebo-controlled, individually randomised superiority trial conducted in 36 hospitals across Australia, New Zealand, and Hong Kong. The trial aims to recruit 4884 patients undergoing abdominal, thoracic, or major orthopaedic surgery. Eligible participants are randomised equally to perioperative intravenous ketamine or placebo for up to 72 h. Incidence of pain in the area of the index surgery is measured by structured telephone interview at 3 months (primary trial endpoint) and 12 months. Pain severity, nature, and associated psychological and quality of life indices are measured using the modified Brief Pain Inventory short form, Neuropathic Pain Questionnaire, Kessler K-10 Psychological Distress Scale, Pain Catastrophising Scale, EQ-5D-3L, and measures of healthcare utilisation and costs. The trial is being conducted by the Department of Critical Care, University of Melbourne, and the Australian and New Zealand College of Anaesthetists Clinical Trials Network. The trial is funded by the Australian National Health and Medical Research Council.

DISCUSSION

The ROCKet trial will clarify the effectiveness of ketamine in primary prevention of CPSP. In addition, it will provide high-quality, prospective data on the epidemiology of CPSP which will better inform further research into prevention and management of CPSP.

TRIAL REGISTRATION

Australian New Zealand Clinical Trials Registry (ACTRN12617001619336) on the date of 12/11/2017.

People living with chronic pain in Canada face difficult decisions and decisional conflict concerning their care: data from the national DECIDE-PAIN survey

BACKGROUND

Shared decision-making is an imperative in chronic pain care. However, we know little about the decision-making process, especially in primary care where most chronic pain care is provided. We sought to understand decisional needs of people living with chronic pain in Canada.

METHODS

We conducted a population-based cross-sectional online survey of random samples of adults living in Canada with chronic noncancer pain and registered with the Leger Marketing panel. We followed the International Association for Study of Pain definition of chronic pain (i.e., persistent or recurrent pain lasting longer than three months). We used a stratified proportional random sampling based on the population and chronic pain prevalence of each province to achieve representativeness. Based on the Ottawa Decision Support Framework, we collected data on difficult decisions (i.e., decision with more than one option and no clear best option) related to their chronic pain condition, the level of decisional conflict associated with the most difficult decisions (i.e., Decisional Conflict Scale), the assumed and preferred role during the decision-making process (i.e., Control Preferences Scale), and respondents' characteristics. We used descriptive quantitative analyses of survey responses.

RESULTS

Of the 31,545 invited panellists, 2,666 met the eligibility criteria, and 1,649 respondents from the 10 Canadian provinces completed the survey. Respondents had diverse socio-demographic profiles. Mean age was 51.8 years (SD = 16.3). Half were men (51.4%), most lived in urban areas (87.8%), mean pain duration was 8.5 years (SD = 9.6), and respondents reported an average number of painful body regions of 2.3 (SD = 1.5). We observed that 96.7% of respondents faced at least one difficult decision across their care pathways. These difficult decisions were related to numerous issues from the medical consultation, diagnosis, treatment, and daily life. Almost half of respondents made their most difficult decision with a primary care physician. One third of respondents experienced a high level of clinically significant decisional conflict (Decisional Conflict Scale score ≥ 37.5). Two-thirds of respondents self-reported having a collaborative role during their decision while three-quarters wanted this role.

CONCLUSIONS

People living with chronic pain in Canada have unmet decisional needs and need support to make optimal decisions to manage their chronic pain. Our findings will guide future development of interventions to implement shared decision-making, especially to support primary care where discussions about difficult decisions often occur.

Risk Factors and Diagnostic Model Construction of Chronic Pain with Cognitive Impairment

Background

Cognitive impairment (CI) is frequently observed in patients with chronic pain (CP). CP progression increases the risk of dementia and accelerates Alzheimer's disease pathogenesis. However, risk diagnostic models and biomarkers for CP-related CI remain insufficient. Previous research has highlighted the relationships between several complete blood count parameters for CP or CI-related diseases, such as Alzheimer's disease, while the specific values of complete blood count parameters in CP-related CI patients remain unclear. This study aimed to explore the correlation between complete blood count parameters and CP-related CI to establish a risk diagnostic model for the early detection of CP-related CI.

Methods

This cross-sectional study was conducted at West China Hospital, Sichuan University. The Montreal Cognitive Assessment (MoCA) was used to classify patients into either the CP with CI group or the CP without CI group. Univariate analysis and multivariate logistic regression analysis were used to screen the related factors of CP-related CI for constructing a risk diagnostic model, and the model was evaluated using receiver operating characteristic (ROC) curve analysis.

Results

The study ultimately included 163 eligible patients. Based on analysis, age (OR, 1.037 [95% CI, 1.007-1.070]; P=0.018), duration of pain (OR, 2.546 [95% CI, 1.099-6.129]; P=0.032), VAS score (OR, 1.724 [95% CI, 0.819-3.672]; P=0.153), LMR (OR, 0.091 [95% CI, 0.024-0.275]; P<0.001), absolute neutrophil value (OR, 0.306 [95% CI, 0.115-0.767]; P=0.014), and lymphocyte percentage (OR, 6.551 [95% CI, 2.143-25.039]; P=0.002) were identified as critical factors of CP-related CI. The diagnostic model was evaluated by the ROC curve, demonstrating good diagnostic value with an area under the curve (AUC) of 0.803, a sensitivity of 0.603 and a specificity of 0.871.

Conclusion

The risk diagnostic model developed in this study for CP-related CI has significant value and enables clinicians to customize interventions based on each patient's needs.

A scoping review of mind-body therapies for people with persistent pain after stroke

PURPOSE

Persistent pain post-stroke is common; however, non-medical management options remain under-researched. This scoping review sought to identify and summarise existing literature regarding mind-body therapies for people with persistent pain post-stroke, examine pain and pain-related biopsychosocial outcomes, and identify areas for future research.

MATERIALS AND METHODS

This review followed PRISMA and JBI guidelines; the protocol was registered on Open Science Framework. Five electronic databases (PubMed, EMBASE, CINAHL, PsycINFO, Web of Science) were searched from 1992 until 19th August 2024. Primary studies of any design evaluating mind-body therapies in adults with persistent pain post-stroke, published in English in peer-reviewed journals, were eligible. Findings were narratively summarised by study, sample, and mind-body therapy characteristics.

RESULTS

Twenty-one studies comprising 458 adults with various post-stroke pain presentations were included. Only 10 studies specifically targeted stroke pain; the remainder primarily incorporated pre-post measures of pain in a heterogenous stroke sample (with and without pain). Studies varied in their levels of evidence, sample characteristics, mind-body therapies, and biopsychosocial outcome measurement. Nonetheless, improvements in pain and pain-related biopsychosocial outcomes were consistently reported.

CONCLUSION

Limited, lower-quality research suggests improved pain and biopsychosocial outcomes. However, further rigorous research exploring feasibility, safety, efficacy, optimal dosage, format, and setting is recommended.

Clinical proof-of-concept results with a novel TRPA1 antagonist (LY3526318) in 3 chronic pain states

ABSTRACT

Transient receptor potential ankyrin 1 (TRPA1) is implicated in physiological and pathological nociceptive signaling, but the clinical benefit of TRPA1 antagonists in chronic pain is not clearly demonstrated. LY3526318 is an oral, potent, and selective novel TRPA1 antagonist. The Chronic Pain Master Protocol was used to evaluate the safety and efficacy of LY3526318 in 3 randomized, placebo-controlled, proof-of-concept studies in knee osteoarthritis pain (OA), chronic low back pain (CLBP), and diabetic peripheral neuropathic pain (DPNP). Participants were randomized (1:2, placebo:LY3526318, 250 mg daily) into an 8-week double-blinded period. At 4 weeks, participants treated with LY3526318 transitioned to a placebo. The primary endpoint was the self-reported daily pain intensity measured using a Numerical Rating Scale (NRS) at 4 weeks. All endpoints were collected for up to 8 weeks. Change from baseline in average weekly NRS was analyzed using Bayesian mixed model repeated measures in the OA (N = 160), CLBP (N = 159), and DPNP (N = 154) studies. Baseline characteristics were balanced between treatment arms. Mean NRS change from baseline to week 4 did not differ significantly between placebo and LY3526318; however, a numerical improvement was observed in the CLBP, not in the OA or DPNP populations. Safety analysis integrated across studies enhanced understanding of the safety profile of LY3526318. LY3526318 showed a potential drug-induced hepatotoxic effect posing a risk for clinical development. No other safety signals were identified. LY3526318 showed potential for different responses among chronic pain indications and patient subpopulations, highlighting challenges in developing TRPA1 antagonists but supporting their value as a target in managing chronic pain.

The Role of Mechanosensitive Piezo Channels in Chronic Pain

Purpose of Review

Mechanosensitive Piezo channels are ion channels activated by mechanical stimuli, playing a crucial role in mechanotransduction processes and mechanical hypersensitivity. When these channels are subjected to mechanical loading, membrane currents rise instantaneously, depolarizing and activating voltage-gated calcium channels. This results in an increase in intracellular Ca2+, which contributes to heightened sensitivity to mechanical stimuli. This review delves into the characteristics and mechanisms of Piezo channels in chronic pain.

Recent Findings

The findings suggest that Piezo channels are integral to the occurrence and development of chronic pain, including neuropathic pain, visceral pain, musculoskeletal pain, headache or orofacial pain, and inflammatory pain. Piezo channels significantly impact pain perception and transmission. These channels' critical involvement in various pain types highlights their potential as promising targets for chronic pain therapy.

Summary

This review discusses the role of Piezo channels in chronic pain. By understanding these pain mechanisms, new therapeutic strategies can be developed to alleviate chronic pain, offering hope for patients suffering from these debilitating conditions.

Comparative analysis of chronic neuropathic pain and pain assessment in companion animals and humans

Chronic neuropathic pain is underdiagnosed in companion animals. This paper will review the definition of pain and how classification and grading of neuropathic pain can be applied from human to veterinary medicine to increase the recognition of and the confidence in a neuropathic pain diagnosis. The mechanisms of nociception and the pathophysiology of the sensory systems that underlie the transition to chronic pain are described. Potential future methods for diagnosis and treatment of neuropathic pain in veterinary medicine are considered, utilizing the theoretical framework of pain behavior from humans and rodents. By discussing the current state of pain diagnosis in companion animals and increasing the recognition of chronic neuropathic pain, the goal is to increase understanding of chronic neuropathic pain in daily clinical practice and to aid the development of methods to diagnose and treat neuropathic pain.

Beyond pathology: Patient experiences of laparoscopy for persistent pelvic pain with no identifiable cause found

BACKGROUND

Laparoscopy has often been considered a core part of the workup for pelvic pain. However, many of these laparoscopies find no pathology.

AIMS

To evaluate the experiences of patients following laparoscopy for pelvic pain when there is no diagnosis found.

MATERIALS AND METHODS

This descriptive qualitative study reviewed patients who underwent a diagnostic laparoscopy for persistent pelvic pain with no pathology found. Participants completed a written questionnaire and an in-depth semi-structured interview. Interview data were thematically analysed.

RESULTS

Fifteen patients were interviewed with a median age of 30 years. Six themes were identified: desire for a diagnosis, hope as a coping strategy, inadequate communication, having 'next steps' of management offered, mental health impacts, and system issues. Participants wanted a diagnosis to help understand their condition, to enable connection with others, and believed that clinicians viewed pain with a diagnosis more seriously. Participants who were confident preoperatively that laparoscopy would lead to a diagnosis reported this contributing to poorer postoperative mental health. Participants discussed diagnoses not listed in the medical records, which provided hope for future management options. Participants reported worse mental health following the laparoscopy.

CONCLUSION

This study provides insight into the experiences of patients following a laparoscopy without an identifiable diagnosis. It highlights the importance of pre- and postoperative counselling, including discussing the potential for no findings at laparoscopy; the language used around other potential diagnoses; and the value in considering a patient's pre-existing mental health. The findings of this study are relevant for all clinicians counselling people with persistent pelvic pain where endometriosis is suspected.

Relationship Between Sleep Disturbances and Chronic Pain: A Narrative Review

Sleep disturbances and chronic pain are prevalent and interrelated conditions that have significant impact on individuals' quality of life. Understanding the intricate dynamics between sleep and pain is crucial for developing effective treatments that enhance the well-being of affected individuals and reduce the economic burden of these debilitating conditions. This narrative review examines the complex relationship between sleep disturbances and chronic pain. We describe the prevalence and types of sleep disturbances and sleep disorders in chronic pain patients. Posteriorly, we critically review the clinical and experimental evidence, investigating the relationship between sleep disturbances and chronic pain, aiming to clarify the impact of chronic pain on sleep and, conversely, the impact of sleep disturbances on pain perception. In conclusion, the literature largely agrees on the existence of a bidirectional relationship between chronic pain and sleep disturbances, though the strength of each direction in this association remains uncertain. Current evidence suggests that sleep impairment more strongly predicts pain than pain does sleep impairment. Additionally, addressing sleep disturbances in chronic pain patients is crucial, as poor sleep has been linked to higher levels of disability, depression, and pain-related catastrophizing.

Transforming Chronic Pain Care Through Telemedicine: An Italian Perspective

Chronic pain (CP) is a complex and debilitating condition that significantly impairs quality of life and imposes a high burden on healthcare systems. This study aims to evaluate the impact of telemedicine on chronic pain management in cancer survivors with complex CP. Our multicenter retrospective investigation of cancer survivors with complex CP included 100 patients (median age 65 years, 62% female). Pain, disability, and self-perceived health status were assessed using the Numeric Rating Scale (NRS), Brief Pain Inventory (BPI), Oswestry Disability Index (ODI), and the EuroQolfive-dimension five-level (EQ-5D-5L) questionnaire. The most common diagnoses were neuropathic pain (54%) and complex chronic pain (32%). Significant clinical improvements were observed after six months of telemedicine intervention (all p < 0.001). NRS scores improved by more than four points in 77% of patients, BPI Worst Pain Scores decreased by four points in 52% and by five points in 28% of patients. All patients' disability levels improved from severe (median ODI score of 52) to moderate (median ODI score of 30). Self-perceived health status improved from 40 to 60 on the EQ-5D-5L scale. Telemedicine interventions significantly reduced pain intensity, decreased disability levels, and enhanced quality of life in chronic pain patients. These findings underscore the transformative potential of telemedicine in chronic pain management and support its broader integration into medical practice.

The Psychometric Properties of the Chinese Version of the Pain Relief Motivation Scale in Patients With Neurogenic Chronic Pain

BACKGROUND

The Pain Relief Motivation Scale (PRMS) was administered to chronic pain sufferers and predicts their psychological well-being. However, the Chinese version of the PRMS has not undergone psychometric validation.

OBJECTIVES

The PRMS will be psychometrically validated in patients with neuropathic pain-induced chronic pain from mainland China.

METHODS

This cross-sectional study involved 340 patients with neuropathic chronic pain from China. The measurability of the Chinese version of the PRMS was determined by the critical ratio between items, and reliability was confirmed by Cronbach's alpha coefficient. The study also examined the validity of the construction and criterion validity of the Chinese PRMS.

RESULTS

The Chinese version of the PRMS had critical ratio (CR) values ranging from 4.044 to 15.977 (p < 0.05). The Cronbach's alpha coefficient for the scale was 0.821, and the Cronbach's alpha coefficients for the subscales ranged from 0.663 to 0.961. Exploratory Factor Analysis (EFA) showed that five variables accounted for 77.73% of the total variance. The results of the Confirmatory Factor Analysis (CFA) supported the framework for the assessment of the 21-item PRMS. The Chinese version of the PRMS was positively correlated with the General Self-Efficacy Scale in the correlation validity analyses (r = 0.458, p < .001).

CONCLUSION

The Chinese version of the PRMS has powerful validity and reliability and can be used to assess the level of the motivation for pain alleviation in people with pain, serving as a reference for the development of intervention programs for healthcare providers.

Sex Differences in Pain Scores and Medication Consumption for Chronic Non-Cancer Pain

BACKGROUND

Chronic pain is defined as any persistent or recurring pain lasting longer than 3 months that significantly affects a person's quality of life. Millions worldwide are impacted by chronic pain, but its subjective nature makes it difficult to quantify and compare between individuals.

METHODS

This retrospective analysis aimed to examine the differences in pain perception and reporting between male and female patients, as well as how their pain was managed. Data from 1995 patients who met the inclusion criteria were selected from the Advocate Illinois Masonic Pain Clinic database. The types of pain assessed in this study included lower back pain, neck pain, and osteoarthritis.

RESULTS

The findings indicate that females suffer more from chronic pain conditions than males, where lower back pain had the highest prevalence in both sexes (63.7% reported). Baseline Numeric Rating Scale (NRS) scores at the first inpatient visit were statistically higher in females than males (7.95 ± 1.35 vs. 7.72 ± 1.46, p = 0.006). After 1 year of treatment, both sexes reported a clinical improvement in their symptoms. With regards to medication, females reported a higher use of medications such as muscle relaxants, benzodiazepines, and tricyclic antidepressants, while males reported a higher use of opioids (measured in MMEs).

CONCLUSIONS

This study reveals a significant sex difference in the reporting of non-cancer-related chronic pain, with females reporting higher pain intensity than males.

Clinical predictors of treatment response to gabapentin in women with unexplained chronic pelvic pain

Introduction

Chronic pelvic pain affects up to 24% of women worldwide and for up to 55% of these there is no associated pathology. Despite this there are no established treatments in this cohort. This is a secondary analysis of a randomised-controlled trial (GaPP2) to explore if there are measures which enable us to predict treatment outcome.

Methods

GaPP2 recruited women with chronic pelvic pain and no identified pathology and compared the response to gabapentin and placebo. This analysis used variables collected at baseline including validated questionnaires. Binary logistic regression was used to create models to explore whether baseline variables predicted treatment response. Treatment response was determined using 30% reduction in average pain intensity, 30% reduction in worst pain intensity and the Patient Global Impression of Change ('marked' or 'very marked' improvement) individually. We also explored whether baseline variables predicted the occurrence of side-effects (dizziness, visual disturbances and drowsiness).

Results

Using the Patient Global Impression of Change questionnaire, we found a significant binary logistic regression (p = 0.029, explaining 31% of the variance), with those with lower worst pain intensity (odds ratio (OR) of 0.393, 95% CI [0.217, 0.712]), lower bladder symptom score (OR = 0.788, CI [0.628, 0.989]), and higher mental component quality of life score (OR = 0.911, CI [0.840, 0.988]), more likely to have 'marked' or 'very marked' improvement when treated with gabapentin. We could not identify predictors of experiencing side-effects to gabapentin. However, we did find predictors of these in the placebo group (binary logistic regression (p = 0.009) and explained 33% of the variance). Worse mental health (OR = 1.247, CI [1.019, 1.525]) and lower baseline pain interference (OR = 0.687, CI [0.483, 0.978]) were associated with having side effects, whilst the use of hormones reduced the risk of experiencing side effects (OR = 0.239, CI [0.084, 0.676]).

Discussion

Researchers and clinicians are increasingly aware of the importance of personalised medicine and treatment decisions being driven by knowledge of what treatments work for whom. Our data suggests an important role of the Patient Global Impression of Change in clinical trials as it may better reflect balance between symptoms reduction and side-effects and therefore be more useful in clinician-patients joint decision making.

A Review of Remote Monitoring in Neuromodulation for Chronic Pain Management

PURPOSE OF REVIEW

Neuromodulation techniques have emerged as promising strategies for managing chronic pain. These techniques encompass various modalities of nerve stimulation, including Spinal Cord Stimulation (SCS), Dorsal Root Ganglion Stimulation (DRG-S), and Peripheral Nerve Stimulation (PNS). Studies consistently demonstrate significant improvements in pain intensity, quality of life, and reduced opioid usage among patients treated with these modalities. However, neuromodulation presents challenges, such as the need for frequent in-person follow-up visits to ensure proper functionality of the implanted device. Our review explored factors impacting compliance in current neuromodulation users and examined how remote monitoring can mitigate some of these challenges. We also discuss outcomes of recent studies related to remote monitoring of neuromodulation.

RECENT FINDINGS

While remote monitoring capabilities for neuromodulation devices is an emerging development, there are promising results supporting its role in improving outcomes for chronic pain patients. Higher patient satisfaction, improved pain control, and reduced caretaker burdens have been observed with the use of remote monitoring. This review discusses the current challenges with neuromodulation therapy and highlights the role of remote monitoring. As the field continues to evolve, understanding the importance of remote monitoring for neuromodulation is crucial for optimizing pain management outcomes.

The Use of Telemedicine in an Interdisciplinary Pain Center in the Years 2020 and 2021 in Germany: Effects of the COVID-19 Pandemic

Introduction: COVID-19 changed the management of patients with chronic pain. The increased utilization of telemedicine was recommended as a solution. Telemedicine provides medical services by overcoming the geographical distance between practitioner and patient and makes it possible to continue treating the patients with a high level of safety for patients and staff. The aim of our study is to investigate the data on the use of telemedicine in an interdisciplinary pain center in the years 2020 and 2021. Methods: Every patient contact in 2020 and 2021 with the interdisciplinary pain center was registered. Dataset consists of 4,156 patient contacts (N = 1,996 in the year 2020; N = 2,160 in the year 2021). For each patient contact, we collected data on age, sex, place of residence, and the reason or type of the contact. In addition, the incidence rates were used as a data source for the COVID-19 development. Results: In 2020, there was a significant decrease in face-to-face contacts (85.0% to 59.4%) and a significant increase in telemedicine use (especially video calls 0.6% to 20.0%). The use of telemedicine had a temporary peak at the beginning of 2021 (first quarter of 2021: 41.2%). The trend generally reversed during 2021: face-to-face contacts increased again (25.5% to 58.9%) and telemedicine decreased (mainly video calls 41.2% to 25.9%). Conclusion: The results show that telemedicine was successfully implemented in an interdisciplinary pain center during 2020 and 2021. In addition to the software requirements and the data protection, the aspect of digital literacy appears to be relevant. There seems to be a need for an implementation plan in pain centers that includes guidelines for the use of telemedicine.

Investigating various interventions to improve the quality of life of children and adolescents suffering from chronic diseases - a systematic review

INTRODUCTION

The transition from childhood to adulthood is an ups-and-down experience determined by increased independence, formation, and development of personal identity. Children with chronic diseases compared to their peers, face more challenges during this period that can exacerbate their symptoms and negatively affect their quality of life. This research aims to review the studies that have investigated the ways to improve the quality of life of children and adolescents with chronic diseases in Iran.

CONTENT

In this study, a search was done in the international databases of PubMed, Scopus, web of Science, Google Scholar, and the internal databases of Magiran and SID with related keywords including children, adolescents, chronic diseases, quality of life, health, nursing interventions were carried out from 2010 to July 2024. Exclusion criteria included summaries of conference articles and foreign articles other than Persian and English.

SUMMARY AND OUTLOOK

In the primary search, 363 articles were found. After removing duplicates and unrelated items, and finally, 36 articles (52.77 % in English, 47.22 % in Persian) were examined in line with the objectives of the present study. The results of the study indicate that non-pharmacological interventions can significantly improve the quality of life of adolescents with chronic diseases. Nursing interventions appear to have a positive and significant effect on the quality of life of children and adolescents with chronic illness.

Peripheral Nerve Stimulation for Neuropathic Pain Management: A Narrative Review

This narrative review examines the therapeutic efficacy of peripheral nerve stimulation (PNS) in the treatment of neuropathic pain (NP), a type of pain arising from lesions or diseases of the somatosensory system with a global prevalence ranging from 6.90% to 10.00%. Traditional pharmacological interventions often fall short for many persons, highlighting the need for alternative treatments such as PNS, which has demonstrated significant promise with minimal side effects. The review summarizes the effectiveness of PNS in various NP conditions, including trigeminal neuralgia and postherpetic neuralgia, and underscores the need for further research to refine treatment approaches. The mechanism of PNS is discussed, involving the activation of non-nociceptive Aβ fibers and modulation of neurotransmitters, and offering pain relief through both peripheral and central pathways. Despite the proven efficacy of PNS, challenges remain, including the need for randomized controlled trials and the optimization of stimulation parameters. The review concludes that PNS is a promising treatment modality for NP, warranting additional high-quality trials to solidify its role in clinical practice.

Comparison of Intercostal Nerve Block and Serratus Anterior Plane Block for Perioperative Pain Management and Impact on Chronic Pain in Thoracoscopic Surgery: A Randomized Controlled Trial

OBJECTIVES

The intent of this study was to compare the analgesic efficacy of intercostal nerve block (ICNB) under direct thoracoscopic visualization and serratus anterior plane block (SAPB) with ultrasound guidance during thoracoscopic surgery's perioperative period. Furthermore, it examined their impact on chronic pain and identifies potential risk factors associated with its development.

MATERIALS AND METHODS

In this prospective randomized controlled study, 74 thoracoscopic surgery patients were randomly assigned to ICNB or SAPB groups. Attending surgeons administered ICNB, while anesthesiologists performed SAPB, both using 20 mL of 0.5% ropivacaine. Primary outcomes included Visual Analog Scale (VAS) scores for resting and coughing pain at 6, 12, 24, and 48 hours postoperatively, perioperative opioid and NSAID consumption, and chronic pain incidence at 3 months postoperatively. Secondary outcomes aimed to identify independent risk factors for chronic pain.

RESULTS

The primary results reveal that the SAPB group exhibited significantly lower VAS scores than the ICNB group for postoperative coughing at 24 hours ( P <0.001, 95% CI=0.5, 1) and for resting pain at 48 hours ( P =0.001, 95% CI=0.2, 1). Conversely, the ICNB group demonstrated a reduced VAS score for resting pain at 6 hours compared with the SAPB group ( P =0.014, 95% CI=-0.5, 0.5). SAPB group required significantly less intraoperative sulfentanil ( P <0.001, 95% CI=2.5, 5), remifentanil ( P =0.005, 95% CI=-0.4, -0.1), and flurbiprofen ester ( P =0.003, 95% CI=0, 50) than ICNB group. Chronic pain incidence was similar ( P =0.572, 95% CI=0.412, 1.279), with mild pain in both ICNB and SAPB groups. Secondary findings indicate that resting VAS score at 12 hours (OR=7.59, P =0.048, 95% CI=1.02, 56.46), chest tube duration (OR=3.35, P =0.029, 95% CI=1.13, 9.97), and surgical duration (OR=1.02, P =0.049, 95% CI=1.00, 1.03) were significant predictors of chronic pain occurrence.

DISCUSSION

ICNB and SAPB demonstrated comparable analgesic effects, with similar rates of chronic pain occurrence. Chronic pain independent risk factors included resting VAS score at 12 hours, chest tube duration, and surgical duration.

Is chronic pain caused by central sensitization? A review and critical point of view

Chronic pain causes disability and loss of health worldwide. Yet, a mechanistic explanation for it is still missing. Frequently, neural phenomena, and among them, Central Sensitization (CS), is presented as causing chronic pain. This narrative review explores the evidence substantiating the relationship between CS and chronic pain: four expert researchers were divided in two independent teams that reviewed the available evidence. Three criteria were established for a study to demonstrate a causal relationship: (1) confirm presence of CS, (2) study chronic pain, and (3) test sufficiency or necessity of CS over chronic pain symptoms. No study met those criteria, failing to demonstrate that CS can cause chronic pain. Also, no evidence reporting the occurrence of CS in humans was found. Worryingly, pain assessments are often confounded with CS measures in the literature, omitting that the latter is a neurophysiological and not a perceptual phenomenon. Future research should avoid this misconception to directly interrogate what is the causal contribution of CS to chronic pain to better comprehend this problematic condition.

Characteristics of the practice of New Zealand osteopaths who manage patients with chronic pain

BACKGROUND

Chronic pain management is challenging. Those with chronic pain present to health professionals, including osteopaths.

METHODS

Secondary analysis of a cross-sectional survey of the Osteopathy Research Connect - New Zealand (ORC-NZ), a practice-based research network (PBRN). Demographic, practice, and treatment characteristics of osteopaths who 'often' and 'not often' treat chronic pain patients were collected.

RESULTS

Two hundred and seventy-seven (277) NZ osteopaths responded and just over half (50.7% N = 138) reported 'often' treating chronic pain patients. This group, who have a similar male-to-female ratio, often use a diagnostic screening questionnaire (aOR 3.78), and often treat patients with non-musculoskeletal complaints (aOR 3.12) and tendinopathies (aOR 3.41).

CONCLUSIONS

This study highlights practice and clinical management characteristics of NZ osteopaths who manage chronic pain patients.

Discordant dry eye disease and chronic pain: A systematic review and meta-analysis

PURPOSE

To evaluate the relative contributions of objective and subjective indicators of dry eye disease (DED) in individuals with chronic pain conditions compared with controls.

METHODS

A systematic review and meta-analysis was conducted of studies that reported the signs and symptoms of DED and/or their prevalence in individuals with chronic pain compared with controls. International Association for the Study of Pain (IASP) International Classification of Diseases (ICD)-11 codes for chronic pain conditions were applied, and outcomes defined as DED signs and symptoms. A search strategy utilised the EMBASE, Web of Science, Cochrane Library and MEDLINE databases. Risk of bias assessment was performed with the Newcastle-Ottawa scale. Random effects meta-analysis calculated mean differences (MD) and odds ratios (OR), while subgroup analysis of different chronic pain conditions explored their relative association with the signs and symptoms of DED. Evidence certainty was evaluated using Grades of Recommendation, Assessment, Development, and Evaluation (GRADE).

RESULTS

Fourteen observational studies comprising 3,281,882 individuals were included. Meta-analysis found high quality evidence that individuals with chronic pain were more likely to experience symptoms of DED than controls (OR = 3.51 [95 %CI: 3.45,3.57]). These symptoms were more severe (MD = 18.53 [95 %CI: 11.90, 25.15]) than controls with a clinically meaningful effect size. Individuals with chronic pain had more rapid tear film disruption (MD = -2.45 [95 %CI: -4.20, -0.70]) and reduced tear production (MD = -5.57 [95 %CI: -9.56, -1.57]) compared with controls (with moderate evidence quality). High quality evidence revealed individuals with chronic pain had lower basal tear production (anaesthetised) than controls (MD = -2.59 [95 %CI: -3.60, -1.58]). Tear film osmolarity showed no significant differences between the chronic pain and pain-free groups. Group differences for DED signs were not considered clinically meaningful.

CONCLUSION

More severe, clinically meaningful symptoms of DED were reported in individuals with chronic pain than controls, however group differences for the signs of DED were typically of limited or questionable clinical relevance. This ocular phenotype where DED is felt more than it is seen in chronic pain may reflect underlying sensory hypersensitivity, shared by both conditions and contributing to their frequent comorbidity. Advancing understanding of this potential pathophysiological mechanism may guide clinical management.

How to Distinguish Non-Inflammatory from Inflammatory Pain in RA?

PURPOSE OF THE REVIEW

Managing non-inflammatory pain in rheumatoid arthritis (RA) can be a huge burden for the rheumatologist. Pain that persists despite optimal RA treatment is extremely challenging for patient and physician alike. Here, we outline the latest research relevant to distinguishing non-inflammatory from inflammatory RA pain and review the current understanding of its neurobiology and management.

RECENT FINDINGS

Nociplastic pain is a recently introduced term by the international pain community. Its definition encompasses the non-inflammatory pain of RA and describes pain that is not driven by inflamed joints or compromised nerves, but that is instead driven by a functional reorganisation of the central nervous system (CNS). Insights from all areas of nociplastic pain research, including fibromyalgia, support a personalised pain management approach for non-inflammatory pain of RA, with evidence-based guidelines favouring use of non-pharmacological interventions. Future developments include novel CNS targeting pharmacotherapeutic approaches to treat nociplastic pain.

The effect of eye movement desensitization and reprocessing on fibromyalgia: A multiple-baseline experimental case study across ten participants

Fibromyalgia (FM) is a chronic pain disorder characterized by widespread musculoskeletal pain, fatigue, and stiffness in muscles and joints. Traumatic life experiences and post-traumatic stress symptoms play a role in its development and persistence. Although previous research suggests that pain and FM symptoms decrease after eye movement desensitization and reprocessing (EMDR) therapy, its effectiveness has not been investigated in a controlled manner. The present study investigated the effectiveness of a six-session, 90-minute EMDR therapy using a multiple baseline single-case experimental design (SCED) across ten adult females with FM. The SCED involved a baseline, intervention, one- and three-month follow-up phase. The primary outcome was pain. Secondary outcomes included post-traumatic stress symptoms, other FM symptoms (fatigue, stiffness in muscles and joints), and the impact of FM on daily activities and sleep. Data were statistically analyzed by primarily testing means across phases on an individual and group level. Post-traumatic stress symptoms improved significantly in seven participants. Pain severity decreased significantly in six participants, with three of them maintaining significant improvement three months later. One participant showed clinically relevant change one month later. Furthermore, improvements were observed in secondary outcome measures. The findings support the efficacy of EMDR in reducing FM symptoms.

Investigating the effects of artificial baroreflex stimulation on pain perception: A comparative study in no-pain and chronic low back pain individuals

The autonomic nervous system (ANS) and pain exhibit a reciprocal relationship, where acute pain triggers ANS responses, whereas resting ANS activity can influence pain perception. Nociceptive signalling can also be altered by 'top-down' processes occurring in the brain, brainstem and spinal cord, known as 'descending modulation'. By employing the conditioned pain modulation (CPM) paradigm, we previously revealed a connection between reduced low-frequency heart rate variability and CPM. Individuals with chronic pain often experience both ANS dysregulation and impaired CPM. Baroreceptors, which contribute to blood pressure and heart rate variability regulation, may play a significant role in this relationship, although their involvement in pain perception and their functioning in chronic pain have not been sufficiently explored. In the present study, we combined artificial 'baroreceptor stimulation' in both pressure pain and CPM paradigms, seeking to explore the role of baroreceptors in pain perception and descending modulation. In total, 22 individuals with chronic low back pain (CLBP) and 29 individuals with no-pain (NP) took part in the present study. We identified a differential modulation of baroreceptor stimulation on pressure pain between the groups of NP and CLBP participants. Specifically, NP participants perceived less pain in response to baroreflex activation, whereas CLBP participants exhibited increased pain sensitivity. CPM scores were associated with baseline measures of baroreflex sensitivity in both CLBP and NP participants. Our data support the importance of the baroreflex in chronic pain and a possible mechanism of dysregulation involving the interaction between the ANS and descending pain modulation. KEY POINTS: Baroreflex stimulation has different effects on pressure pain in participants with chronic pain compared to matched individuals with no-pain. Baroreceptor activation decreases pain in participants with no-pain but increases pain perception in participants with chronic pain. Baroreflex sensitivity is associated with conditioned pain modulation in both groups of chronic pain and no-pain participants. The reactivity of the baroreflex during autonomic stress demonstrated a positive correlation with Pain Trait scores in participants with chronic back pain.

It's not all that bad: associations among pain characteristics and sexual well-being in people living with chronic pain

BACKGROUND

Individuals experiencing chronic pain often report adverse effects on their sexual functioning. However, other important aspects of sexual well-being (SWB), such as sexual distress and sexual self-esteem, have received little attention. This is an important omission because a SWB involves more than just good sexual function. Similarly, past research has not examined how chronic pain characteristics affect the different aspects of SWB.

AIM

The goal of this cross-sectional study was to examine the SWB of individuals living with chronic pain and to examine the extent to which SWB is associated with different chronic pain characteristics.

METHODS

A total of 310 individuals (28.1% men, 70.6% women, 1.3% transgender men) with ages between 21 and 50 (M = 31.96, SD = 6.13) who were in a romantic relationship and with self-reported chronic pain for three months or longer completed an online survey.

OUTCOMES

The following indicators of SWB were included in the study: frequency of genital sexual activity, sexual satisfaction, sexual self-esteem, sexual desire, sexual function, genital pain, and sexual distress.

RESULTS

The results show that most individuals with chronic pain maintain an active and satisfying sexual life and feel positive about themselves as a sexual partner. Slightly more than a fourth reported experiencing at least one sexual functioning difficulty and almost three-fourths of them found those difficulties sexually distressing. A first canonical correlation showed that more negative pain characteristics were associated with poorer SWB. The second canonical correlation showed that greater perceived partner support can offset the negative relationship between pain and some aspects of SWB.

CLINICAL IMPLICATIONS

These findings show that individuals living with chronic pain can experience positive SWB. Furthermore, the buffering effect of partner support suggests it is important to involve romantic partners in interventions aimed at improving the SWB of people living with chronic pain.

STRENGTHS AND LIMITATIONS

The study examined a large number of indicators of SWB using a sample of individuals with different types of chronic pain. Limitations include potential self-selection bias and a sample that was predominantly white and highly educated.

CONCLUSIONS

The results paint a more positive picture of the SWB of individuals living with pain and show that individuals living with chronic pain can experience positive SWB. These findings can help for researchers, educators, and clinicians about how to conceptualize, understand, and improve the SWB of individuals living with chronic pain.

Glial modulators as novel therapeutics for comorbid pain and opioid use disorder

Chronic pain and opioid use disorder (OUD) are major public health problems, with rising opioid-related overdose deaths linked to increased opioid prescriptions for pain management. Novel treatment approaches for these commonly comorbid disorders are needed. Growing evidence supports a role for glial activation for both chronic pain and substance use disorders, including OUD. This review provides an overview of glial modulators as a novel treatment approach for comorbid pain and OUD. We aim to synthesize clinical studies investigating the efficacy of glial modulators in treating these comorbid disorders. We conducted a literature search of PubMed and Google Scholar databases in October 2023 to identify relevant clinical trials. The included studies varied in terms of patient population, study methodology and outcomes assessed, and were often limited by small sample sizes and other methodological issues. Additionally, several glial modulators have yet to be studied for chronic pain and OUD. Despite these limitations, these studies yielded positive signals that merit further investigation. Both chronic pain and OUD remain significant public health problems, with many treatment challenges. Glial modulators continue to hold promise as novel therapeutics for comorbid pain and OUD, given positive indications that they can improve pain measures, and reduce addiction-related outcomes. As our understanding of the mechanisms underlying the contributions of glial modulators to pain and addiction behaviours deepens, we will be better equipped to identify more specific therapeutic targets for chronic pain and OUD.

Temporal Relationship Between Pain and Mental Health Conditions Among Children and Young People-A Population-Based Register Study in Sweden

Both pain and mental health conditions are common among young people. They often co-occur, but we wanted to investigate further whether it is pain (abdominal pain, headache, musculoskeletal pain, menstrual pain) that precedes mental health conditions (depression, anxiety, stress, phobia) or whether it is the other way around, mental health conditions that precede pain. Using electronic health records-the Skåne Healthcare Register-we identified and followed young people aged 7 to 18 over a 13-year period and tracked all their registered diagnoses. Using Poisson regression, we analyzed the incidence rate ratio (IRR) of being diagnosed with mental health conditions after an initial diagnosis of pain and vice versa the IRR of being diagnosed with pain after an initial diagnosis of a mental health condition. Among individuals with pain, 12,054 (23%) later received a diagnosis of a mental health condition. The IRR for a mental health condition after pain was 2.86 (95% (confidence interval) CI = 2.78-2.94) compared to not having pain, adjusted for age, sex, and prior health care consultations. Among individuals with mental health conditions, 3,688 (17%) later received a diagnosis of pain. The adjusted IRR was 1.57 (95% CI = 1.52-1.63). Compared to boys, girls had consistently higher estimates, and the same was found for the younger individuals compared to the older ones. Individuals with pain have a 3-fold increased risk of developing mental health conditions, while the risk of developing pain after mental health conditions was lower although still elevated compared to young people seeking care regardless of cause. PERSPECTIVE: Young people with pain have a 3-fold increased risk of developing mental health conditions, while the reverse risk is lower but still elevated compared to young people without these conditions. Health care professionals must recognize the interplay between pain and mental health in young patients when diagnosing and planning treatment.

The comparison of Pilates with cognitive functional therapy in adults with chronic neck pain: a protocol for randomized controlled trial

BACKGROUND

Chronic Neck Pain is one of the main musculoskeletal problems in the general population that negatively affects the lives of patients. Its treatment can include various treatment methods, such as Pilates and Cognitive Functional Therapy. The purpose of this research was to investigate the effectiveness of Pilates in relation to Cognitive Functional Therapy in people with Chronic Neck Pain.

METHODS

This single-blind randomized controlled study included 60 patients with Chronic Neck Pain who were randomly divided into two groups (Group 1: Pilates, Group 2: Cognitive Functional Therapy). All patients will undergo 16 sessions over 8 weeks. Outcome measures (pain, disability, fear perception, functionality, quality of life, cervical range of motion, and neck muscle isometric strength) will be evaluated at baseline, at the end of the treatment (week 8) and three months after randomization (week 12). Outcome measures will be analyzed via random effects at the three assessment time points, and the interactions of the treatment groups with the assessment points will be included in the results of the fixed model.

DISCUSSION

This is the first Randomized Controlled Trial to compare the effectiveness of Pilates and Cognitive Functional Therapy in patients with chronic neck pain. The results of this research will provide information on the effectiveness of each intervention separately and whether one of the two can outperform the other.

Associations of preterm birth and neonatal stress exposure with chronic pain in adulthood - Results from the Gutenberg prematurity study

Although the effect of early childhood stress on central nervous pain processing is well known, studies on the association of prematurity and chronic pain are scarce. This study used data from a single-centre retrospective cohort study followed by a prospective clinical examination and pain assessment. The study was based on data from the local birth registry. Newborns born between 1969 and 2002 who had reached adulthood were eligible .. Using a selection algorithm, a study cohort stratified by gestational age (GA) was recruited. Chronic pain conditions were assessed using questionnaire and standardized pain drawings. Data on the pre-, peri- and postnatal clinical course was assessed from medical records. Multivariable logistic regression analyses were conducted to investigate associations between prematurity and chronic pain with adjustment for age, gender, socioeconomic status, and perinatal stress factors. 427 participants born preterm and full-term were included (age 28.5 ± 8.7 years). Chronic pain conditions were similarly common between groups with different levels of prematurity (GA ≥ 37 weeks: 34.5 %, GA33-36 weeks: 37.6 %, GA32-29 weeks: 25.2 %, GA < 29 weeks: 30.4 %, p = 0.20). In multivariable analyses, no association between low GA and the presence of chronic pain was found (OR = 0.99 (CI95 %: 0.94-1.04, p = 0.63); this was also true for a subanalysis of widespread pain. While neither fetal nutritional status nor perinatal stressors were associated with pain, exposure to maternal but not paternal smoking during pregnancy was associated with increased risk to develop pain (OR = 2.77 (CI95 %: 1.31-5.88, p = 0.008) in adults born preterm and full-term. This study suggests that prematurity by itself does not increase the risk of chronic pain later in life, but provides preliminary evidence for maternal smoking during pregnancy as risk factor.

The unmet mental health needs of U.S. adults living with chronic pain

ABSTRACT

Previous research suggests that individuals with mental health needs and chronic pain may be less likely to use mental health treatment compared with those with mental health needs only. Yet, few studies have investigated the existence of population-level differences in mental health treatment use. We analyzed data from the National Health Interview Survey (n = 31,997) to address this question. We found that chronic pain was associated with end-to-end disparities in the mental health journeys of U.S. adults: (1) Those living with chronic pain are overrepresented among U.S. adults with mental health needs; (2) among U.S. adults with mental health needs, those living with chronic pain had a lower prevalence of mental health treatment use; (3) among U.S. adults who used mental health treatment, those living with chronic pain had a higher prevalence of screening positive for unremitted anxiety or depression; (4) among U.S. adults living with both chronic pain and mental health needs, suboptimal mental health experiences were more common than otherwise-just 44.4% of those living with mental health needs and co-occurring chronic pain reported use of mental health treatment and screened negative for unremitted anxiety and depression, compared with 71.5% among those with mental health needs only. Overall, our results suggest that U.S. adults with chronic pain constitute an underrecognized majority of those living with unremitted anxiety/depression symptoms and that the U.S. healthcare system is not yet adequately equipped to educate, screen, navigate to care, and successfully address their unmet mental health needs.

Barriers and facilitators for physical activity in people living with chronic pain: a systematic review and combined analysis

ABSTRACT

Chronic pain is a prevalent and complex health issue associated with physical, emotional, and social consequences. Management of pain is multifactorial and challenging; however, physical activity (PA) has consistently been shown to be beneficial. Despite this, PA levels among people with chronic pain are low. This study aimed to identify facilitators and barriers to PA among adults with chronic pain and analyse these using the structure of a validated behaviour change model: the capability, opportunity, and motivation behaviour change model (COM-B). We performed a systematic review of 6 databases and subsequent combined analysis including peer-reviewed primary research published in English up to November 15, 2023. Search terms consisted of 3 components: pain, PA, and facilitators/barriers. Quality appraisal of studies was conducted using appropriate tools. The systematic search yielded 40 eligible studies with a total of 2164 participants. The studies represented various chronic pain conditions, locations, and study designs. The key barriers to engagement in PA were the impact of pain severity, comorbidities, lack of knowledge about PA benefits, and time constraints. Key facilitators were a personalised approach, social support, and awareness of the benefits. The findings were categorised according to the COM-B model, allowing for the identification of modifiable factors. Person-centred approaches, education, and accessible environments were identified as important aspects to consider for successful PA promotion among people with chronic pain. Utilising the factors identified in the COM-B model is crucial for successful future interventions to increasing PA uptake and adherence in this population.

'What script am I meant to use?': a qualitative study in chronic primary pain

BACKGROUND

Chronic primary pain (CPP) as a diagnosis has been introduced in the recent International Classification of Diseases, 11th Revision (ICD-11). CPP captures the experience of pain as the primary problem, without an underlying attributable cause. Dissemination of UK guidance regarding CPP represents the first time it has been recognised as a condition in its own right. Little is known about GP views concerning caring for patients with CPP, and how related guidance is viewed and applied in practice.

AIM

To explore GP perspectives in relation to caring for people with CPP, including challenges encountered and use of related guidelines in practice.

DESIGN & SETTING

A UK-wide qualitative interview study in primary care.

METHOD

Purposive and snowball sampling were used to recruit 15 GP participants from England, Northern Ireland, Wales, and Scotland. Semi-structured interviews were undertaken and analysed using reflexive thematic analysis.

RESULTS

The following three main themes were generated: (1) 'How to start? Problematic beginnings', which referred to difficulties regarding diagnosis; (2) 'Where to go? Mapping the management challenge'; and (3) 'How to get there? Navigating strategies and response', which explored GP awareness and acceptability of UK guidelines for chronic pain. Areas identified for potential improvement included increased access to non-pharmacological management (NPM) and secondary care services, support with deprescribing, and an expanded multidisciplinary team input.

CONCLUSION

CPP is complex to both diagnose and manage. Although guidelines provide a useful framework, they pose challenges when translating into day-to-day practice.

Factors Influencing the Self-Management Stages of Older Patients With Chronic Pain: A Cross-Sectional Study

PURPOSE

To investigate the current status and related influencing factors of self-management stages in older patients with chronic pain.

DESIGN

A cross-sectional study.

METHODS

A total of 326 older patients with chronic pain were selected as the study subjects in five city districts from December 2022 to June 2023. We used a general information survey form, a numerical rating scale, a pain stages of change questionnaire, a health literacy assessment instrument for patients with chronic pain, and a psychological inflexibility in pain scale to collect relevant information from participants. Univariate analysis and multiple ordinal logistic regression analysis were conducted to identify the relevant influencing factors of the self-management stages.

RESULTS

The self-management stages of older patients with chronic pain were as follows: precontemplation stage (n = 52; 16.0%), contemplation stage (n = 103; 31.6%), action stage (n = 62; 19.0%), and maintenance stage (n = 109; 33.4%). Regression results showed that average monthly household income, smoking history, pain duration, health literacy, and psychological inflexibility were the influencing factors for the self-management stages of older patients with chronic pain.

CONCLUSIONS

In this study, the self-management stages of older patients with chronic pain still needed to be improved. Suitable personalized pain self-management strategies should be developed based on identified factors affecting patients to improve their self-management stages.

CLINICAL IMPLICATIONS

Nursing professionals can use research survey findings to identify patients at low levels of self-management stage and develop personalized intervention strategies based on various influencing factors. For example, nurses can provide practical smoking cessation guidance to assist older chronic pain patients in improving their lifestyle. Nurses can also seek support from family members to collectively offer better medical care and nursing services for the patient if financially feasible. Secondly, as our study has demonstrated, patients' health literacy and psychological flexibility were poor. Nurses can utilize available clinical resources to offer educational materials, such as portable handbooks and online videos, covering pain-related knowledge, managing pain medication, and coping strategies like massage and exercise. Combining this approach with mental health education, such as relaxation therapy, can help patients better understand their pain and actively participate in their self-management. In addition, nursing staff should pay more attention to the self-management stages of older chronic pain patients, and the assessment of self-management stages can be included in clinical pain management for patients. Regular assessment will help track more patients needing attention and make timely adjustments to their pain management plans.

Glucocorticoid facet joint injection for chronic back or neck pain

OBJECTIVES

This is a protocol for a Cochrane Review (intervention). The objectives are as follows: The primary objective is to assess the benefits and harms of glucocorticoid facet joint injections in adults with chronic back or neck pain that is presumed to be facet joint-mediated. The secondary objective is to assess whether the effects differ by diagnostic method for facet joint-mediated pain.

Causes of chronic pain unrelated to surgical trauma after groin hernia repair: a prospective cohort study

BACKGROUND

Chronic inguinal pain (CIP) can be caused by musculoskeletal or neurological pathologies and by surgical trauma after inguinal hernia repair among other. The aim of this prospective cohort observational study was to find the incidence and causes of CIP unrelated to surgical trauma 12 months after inguinal hernia repair.

METHODS

During sixteen months patients consulting a hernia center for groin-related symptoms were included in the study. Patients were evaluated by surgeons and filled out preoperatively the Inguinal Pain Questionnaires and a Numerical Rating Scale pain-questionnaire. For patients undergoing inguinal hernia repair, postoperative questionnaires similar to the pre-operative ones were sent out at 12 months. Patients scoring pain on pain questionnaires were evaluated by phone and physical examination.

RESULTS

289 patients (78.1%) of 370 repaired patients filled in the postoperative questionnaires. 62 (21.4%) patients scored pain, of these patients 5 (1.7%, 5/289) answered incorrectly in the pain questionnaires and 14 (4.8%, 14/289) had non-surgical trauma causes of pain: 5 musculoskeletal, 4 neurological and 3 other medical pathologies.

CONCLUSIONS

This cohort study found CIP unrelated to surgical trauma in 4.8% of patients undergoing a groin hernia repair. Most causes of pain unrelated to surgical trauma were musculoskeletal and neurological pathologies. Nearly a third of patients scoring inguinal pain on pain-questionnaires did not have chronic post-surgical pain (CPSP), therefore incidence of CPSP should not be based solely on pain questionnaires. Clinical assessment of patients with pain is necessary to excluded CIP unrelated to the surgical trauma.

S. Sanches P, P. Silva D, Torres ILS, Fregni F, Caumo W. Modulation of neural networks and symptom correlated in fibromyalgia: A randomized double-blind multi-group explanatory clinical trial of home-based transcranial direct current stimulation

BACKGROUND

Transcranial direct current stimulation (tDCS) might modulate neural activity and promote neural plasticity in patients with fibromyalgia (FM). This multi-group randomized clinical trial compared home-based active tDCS (HB-a-tDCS) on the left dorsolateral prefrontal cortex (l-DLPFC) or home-based sham tDCS (HB-s-tDCS), and HB-a-tDCS or HB-s-tDCS on the primary motor cortex (M1) in the connectivity analyses in eight regions of interest (ROIs) across eight resting-state electroencephalography (EEG) frequencies.

METHODS

We included 48 women with FM, aged 30 to 65, randomly assigned to 2:1:2:1 to receive 20 sessions during 20 minutes of HB-a-tDCS 2mA or HB-s-tDCS, over l-DLPFC or M1, respectively. EEG recordings were obtained before and after treatment with eyes open (EO) and eyes closed (EC).

RESULTS

In the EC condition, comparing pre to post-treatment, the HB-a-tDCS on l-DLPFC decreased the lagged coherence connectivity in the delta frequency band between the right insula and left anterior cingulate cortex (ACC) (t = -3.542, p = .048). The l-DLPFC HB-a-tDCS compared to HB-s-tDCS decreased the lagged coherence connectivity in the delta frequency band between the right insula and left ACC (t = -4.000, p = .017). In the EO condition, the l-DLPFC HB-a-tDCS compared to M1 HB-s-tDCS increased the lagged coherence connectivity between the l-DLPFC and left ACC in the theta band (t = -4.059, p = .048). Regression analysis demonstrated that the HB-a-tDCS effect on the l-DLPFC was positively correlated with sleep quality. On the other hand, the HB-a-tDCS on l-DLPFC and HB-s-tDCS on M1 were positively correlated with pain catastrophizing.

CONCLUSIONS

These results show that HB-a-tDCS affects the neural connectivity between parts of the brain that control pain's emotional and attentional aspects, which are most noticeable at lower EEG frequencies in a rest state. This effect on neural oscillations could serve as a neural marker associated with its efficacy in alleviating fibromyalgia symptoms.

CLINICAL TRIAL REGISTRATION

identifier [NCT03843203].

Religiously Integrated Forgiveness Therapy: A Psychotherapeutic Tool for Depression and Pain Among Pakistani Patients with Chronic Widespread Pain

Individuals experiencing chronic widespread musculoskeletal pain (CWP) frequently have comorbid depression. The presence of depression and pain-related outcomes in these patients are found to be positively correlated with inability to forgive or let go of interpersonal hurts and maltreatments. So for these patients, the current study aimed to apply a religiously integrated forgiveness intervention and to find out its efficacy in lessening depression and pain. The first part of research consisted of developing a religiously integrated forgiveness intervention by incorporating Islamic principles in Enright's process model of forgiveness. The other half was a randomized-control design where Depression Subscale of Depression Anxiety Stress Scale Urdu version as reported by Zafar (Urdu translations of the DASS, 2014) and Heartland Forgiveness Scale Urdu version (Butt in Interdiscip J Contemp Res Bus 4:769-792, 2012) were applied on a total of 272 adults (122 male and 150 female). After screening, 60 individuals (18 males and 39 females) were selected on the basis of high and low score on depression and forgiveness scales, respectively. Their ages ranged from 26 to 45 years. Selected individuals were randomly assigned to be a part of either treatment or control group. Religiously integrated forgiveness therapy (RIFT) was applied on 30 individuals in comparison to the 30 participants from control group. Results indicated that in comparison with control group, from pretest to posttest participants in forgiveness intervention group scored lower on depression as well as pain and scored higher on forgiveness (p > .001). It was found that the religiously integrated model of forgiveness therapy was efficacious in enhancing forgiveness and in reducing depression among individuals with chronic widespread musculoskeletal pain.

Diet Quality and Dietary Intake in Breast Cancer Survivors Suffering from Chronic Pain: An Explorative Case-Control Study

Background/Objectives: Dietary factors may significantly influence pain management in cancer survivors. However, a substantial gap exists regarding the relationship between nutrition and chronic pain in this population. This study examined differences in diet quality and dietary intake between breast cancer survivors (BCS) experiencing chronic pain and healthy controls (HC). It also aimed to understand the associations between dietary elements and pain-related outcomes within the BCS group. Methods: A case-control study was conducted with 12 BCS experiencing chronic pain and 12 HC (ages 18-65). Data collection included body composition, experimental pain assessments, pain-related questionnaires, and a 3-day food diary to calculate diet quality using the Healthy Eating Index-2015 (HEI-2015) and Dietary Inflammatory Index (DII). Statistical analyses evaluated group differences and associations between dietary factors and pain within the BCS group. Results: There were no significant differences in HEI-2015 scores between BCS and HC, but BCS had a significantly lower DII score (p = 0.041), indicating a more anti-inflammatory diet. BCS also showed higher intake of omega-3, vitamins B6, B12, A, D, and magnesium (p < 0.05). While total diet quality scores did not correlate with pain outcomes, several HEI-2015 and DII components, such as dairy, sodium, protein, vitamin C, and vitamin D, showed moderate positive or negative correlations with pain measures. Conclusions: Despite no overall differences in diet quality, BCS with chronic pain consumed more anti-inflammatory nutrients than HC. Complex correlations between specific dietary components and pain outcomes emphasise the need for further research to explore these links for chronic pain management in BCS.

Oral Mucosa Capillaroscopy: A Narrative Review

The oral cavity may suffer from diseases and lesions of different natures that can result in changes to the underlying microvasculature. These changes are typically observed during the examination of biopsy samples, but there is still a need to investigate methods for characterizing them in live tissues. Capillaroscopy, a medical imaging technique using polarized light and magnification, has shown promise in providing enhanced imaging of the oral mucosa microvasculature in preliminary studies. The present work proposed to review the literature on what capillaroscopy is, its applications in the imaging of oral mucosa microvasculature, and its diagnostic and prognostic significance in various diseases and conditions. While there is the limited literature available, further research in oral capillaroscopy, particularly in the field of oral oncology, is needed to determine its potential benefits in diagnosing and predicting outcomes for potentially malignant oral disorders and cancers.

[Validity of the Chronic Pain Grade Scale in nonspecific chronic low back pain]

BACKGROUND

Higher pain grades are associated with high psychological burden and increase the risk for the persistence of chronic low back pain (CLBP).

OBJECTIVES

Previous results on the criterion validity of the Chronic Pain Grade Scale (CPGS) have been extended to the context of inpatient multidisciplinary orthopedic rehabilitation (MOR) and have been supplemented with additional psychosocial and work-related measures.

METHODS

In this multicenter study, psychological, work- and pain-related outcomes were examined among 1010 individuals with nonspecific CLBP (ICD-10: M51/53/54) prior to the beginning of an inpatient MOR stratified by pain grade (I-IV). Additionally, frequency distributions of scores regarding pain-specific self-efficacy, depression, and subjective prognosis of gainful employment by pain grade in patients were investigated.

RESULTS

The CPGS differed between all pain grades in the psychological, work- and pain-related outcomes in the expected direction. In post hoc pairwise comparisons, grade IV was significantly different from the lower grades. Patients with higher pain grades showed unfavorable levels in psychosocial parameters and more frequently scores in the clinical range than expected.

CONCLUSIONS

These results confirm the criterion validity of the CPGS. The psychosocial risk pattern observed in higher pain grades supports the importance of conducting early pain-related and psychological diagnostic assessments and implementing systematic allocation to needs-based interdisciplinary multimodal treatments.

Chronic Musculoskeletal Pain is Associated With Depressive Symptoms in Community-Dwelling Older Adults Independent of Physical Activity

BACKGROUND

Prevalence of chronic musculoskeletal pain and depressive symptoms in adults is high; however, whether there is an association between these conditions in older adults is unknown.

OBJECTIVE

The aim of this study was to investigate the association of depressive symptoms with chronic musculoskeletal pain, and specifically with chronic LBP and knee osteoarthritis (OA), in community-dwelling older adults. In addition, we explored whether physical activity can mitigate these associations.

METHODS

A cross-sectional study design. A cross-sectional study design. Participants recruited were older adults (age ≥60 years) living in the community. Chronic musculoskeletal pain was assessed by specific questions regarding the presence of chronic LBP and knee OA. Depressive symptoms were assessed with the Center for Epidemiologic Studies Depression Scale. Multivariable regression model adjusted for potential confounders (i.e., age, sex, economic status, body composition, and physical activity) was used to investigate the association between chronic musculoskeletal pain and depressive symptoms. Separate analyses were also conducted for older adults with LBP and with knee OA.

RESULTS

A total of 509 (69% women) older adults were recruited. The regression analysis showed that musculoskeletal pain was associated with higher depressive symptoms (β  = 2.52, 95% CI: 0.50 to 4.54; p-value < .05) compared with older adults without chronic musculoskeletal pain. Similarly, in the fully adjusted model, which included physical activity, LBP was associated with higher depressive symptoms (β  = 2.80, 95% CI: 0.82 to 4.79; p-value < .01). The association between knee OA and depressive symptoms was not statistically significant after adjusting for physical activity (β  = 2.00, 95% CI: -0.13 to 4.13; p-value = .06).

CONCLUSION

Older adults with chronic musculoskeletal pain have higher depressive symptoms scores, when compared to those without musculoskeletal pain. Physical activity does not seem to influence this association.

Cross-Sectional Associations Between Expectancies for Cannabis use and Pain in an Emerging Adult Sample

Pain and cannabis use are highly prevalent among emerging adults but research regarding how pain is associated with cannabis-related expectancies is limited. Emerging adults who reported past three-month cannabis use (N = 173) were recruited through an online sampling platform. Participants completed the Graded Chronic Pain Scale, Cannabis Use Disorders Identification Test - Revised, and Marijuana Effect Expectancy Questionnaire. Multiple linear regressions indicated that pain intensity and disability were associated with hazardous cannabis use and expectancies for global negative effects (ps < .001). Sex did not moderate any of these relationships (ps > .14). Findings suggest that emerging adults who experience pain report greater hazardous cannabis use and may expect more negative effects of cannabis use. Researchers and clinicians should consider assessing pain in the context of cannabis studies and interventions.

Enhancing pediatric pain management in Turkey: A modified Delphi study on culturally adapted pain neuroscience education for chronic pain in children

BACKGROUND

Pain Neuroscience Education (PNE) is a commonly used technique applied by physical therapists in the rehabilitation of chronic pain.

OBJECTIVE

The aim of this study was to culturally adapt an existing PNE for children with chronic pain (PNE4Kids) to Turkish children with chronic pain (PNE4Kids-Turkish).

METHODS

A three-round modified Delphi-study was conducted between September 2023 and February 2024. Experts completed questionnaire with 5 items to elicit demographic data and 16 closed and 7 open-ended questions to assess relevance of information, feasibility of stories, visual information, and clarity of message in the 4 main areas of 'normal pain biology', 'pain modulation', 'chronic pain, adaptations, central sensitization', and 'the application and implications of PNE4Kids. MAXQDA software was used for qualitative analysis of open-ended questions. A total of 38 experts (mean age: 36.6 ± 9.05 years, 6 male, 32 female) were recruited for this study.

RESULTS

The results of the first round indicated that 84-100 % of Delphi experts strongly agreed or agreed on the relevance of information, feasibility of stories, visual information, and clarity of message in respect of the 4 main areas. During second and third round, an acceptable degree of agreement with clinical usefulness of PNE4Kids-Turkish materials was obtained.

CONCLUSIONS

PNE4Kids was culturally adapted for Turkish children suffering from chronic pain. The findings of this study mainly highlight the viewpoints of the experts.

IMPLICATION TO PRACTICE

This is the first study to have developed and culturally adapted the PNE4Kids for Turkish children with chronic pain. The PNE4Kids-Turkish is crucial, valuable, helpful, and understandable for Turkish children with chronic pain. In addition, the PNE4Kids-Turkish has the potential to close the gap in research and clinical areas for Turkish children with chronic pain.

A systematic literature review on patient-reported outcome domains and measures in nonsurgical efficacy trials related to chronic pain associated with endometriosis: an urgent call to action

ABSTRACT

Endometriosis, a common cause for chronic pelvic pain, significantly affects quality of life, fertility, and overall productivity of those affected. Therapeutic options remain limited, and collating evidence on treatment efficacy is complicated. One reason could be the heterogeneity of assessed outcomes in nonsurgical clinical trials, impeding meaningful result comparisons. This systematic literature review examines outcome domains and patient-reported outcome measures (PROMs) used in clinical trials. Through comprehensive search of Embase, MEDLINE, and CENTRAL up until July 2022, we screened 1286 records, of which 191 were included in our analyses. Methodological quality (GRADE criteria), information about publication, patient population, and intervention were assessed, and domains as well as PROMs were extracted and analyzed. In accordance with IMMPACT domain framework, the domain pain was assessed in almost all studies (98.4%), followed by adverse events (73.8%). By contrast, assessment of physical functioning (29.8%), improvement and satisfaction (14.1%), and emotional functioning (6.8%) occurred less frequently. Studies of a better methodological quality tended to use more different domains. Nevertheless, combinations of more than 2 domains were rare, failing to comprehensively capture the bio-psycho-social aspects of endometriosis-associated pain. The PROMs used showed an even broader heterogeneity across all studies. Our findings underscore the large heterogeneity of assessed domains and PROMs in clinical pain-related endometriosis trials. This highlights the urgent need for a standardized approach to both, assessed domains and high-quality PROMs ideally realized through development and implementation of a core outcome set, encompassing the most pivotal domains and PROMs for both, stakeholders and patients.

Social determinants of health and youth chronic pain

OBJECTIVES

To identify the relationships between social determinants of health (SDOH) and chronic pain among U.S. youth (referring to children and adolescents).

METHODS

Data including a national sample of U.S. youth were retrieved from the 2022 National Survey of Children's Health. Twenty indicators within five SDOH-related domains (e.i., economic stability, social and community context, neighborhood and built environment, health care access and quality, and education access and quality) were included. The presence of chronic pain was assessed using a self-reported question, answered by the main caregiver. Associations of SDOH-related indicators and youth chronic pain were estimated using multi-variable logistic regression models, while adjusting for covariates (e.g., age, sex, ethnicity, weight status, and movement behaviors).

RESULTS

Data from 30,287 U S. youth aged 6-17 years (median [SD] age, 11.59 [3.30] years; 14,582 girls [48.97 %]) were collected. In 7.5 % of the final sample size, caregivers reported that they had chronic pain. Youth grow up in conditions with diverse SDOH profiles, including food insufficiency (OR = 1.46, 95 % CI: 1.01 to 2.10) and parental unemployment (OR = 1.56, 95 % CI: 1.15 to 2.12); low school engagement (OR = 1.48, 95 % CI: 1.14 to 1.92) and low school safety (OR = 1.65, 95 % CI: 1.14 to 2.39); limited access to quality health care (OR = 2.56, 95 % CI: 2.12 to 3.09), a high frequency of hospital visits (OR = 4.76, 95 % CI: 1.82 to 12.44), and alternative health care (OR = 2.57, 95 % CI: 2.07 to 3.20); bullying victimization (OR = 1.37, 95 % CI: 1.11 to 1.68) and community-based adverse childhood experiences (OR = 1.64, 95 % CI: 1.32 to 2.05); and disadvantageous amenity characteristics (OR = 1.38, 95 % CI: 1.05 to 1.79); resulted in higher odds of presenting chronic pain.

CONCLUSIONS

Different indicators included in the SDOH domains were associated with a higher probability of presenting chronic pain in U.S youth. These findings have implied relationships between the SDOH and chronic pain in youth, requiring a comprehensive approach to addressing health equity to prevent and reduce the presence of youth chronic pain.

The concept of nociplastic pain-where to from here?

ABSTRACT

Nociplastic pain, a third mechanistic pain descriptor in addition to nociceptive and neuropathic pain, was adopted in 2017 by the International Association for the Study of Pain (IASP). It is defined as "pain that arises from altered nociception" not fully explained by nociceptive or neuropathic pain mechanisms. Peripheral and/or central sensitization, manifesting as allodynia and hyperalgesia, is typically present, although not specific for nociplastic pain. Criteria for possible nociplastic pain manifesting in the musculoskeletal system define a minimum of 4 conditions: (1) pain duration of more than 3 months; (2) regional, multifocal or widespread rather than discrete distribution of pain; (3) pain cannot entirely be explained by nociceptive or neuropathic mechanisms; and (4) clinical signs of pain hypersensitivity present in the region of pain. Educational endeavors and field testing of criteria are needed. Pharmacological treatment guidelines, based on the three pain types, need to be developed. Currently pharmacological treatments of nociplastic pain resemble those of neuropathic; however, opioids should be avoided. A major challenge is to unravel pathophysiological mechanisms driving altered nociception in patients suffering from nociplastic pain. Examples from fibromyalgia would include pathophysiology of the peripheral as well as central nervous system, such as autoreactive antibodies acting at the level of the dorsal root ganglia and aberrant cerebral pain processing, including altered brain network architecture. Understanding pathophysiological mechanisms and their interactions is a prerequisite for the development of diagnostic tests allowing for individualized treatments and development of new strategies for prevention and treatment.

Smart Response Biomaterials for Pain Management

The intricate nature of pain classification and mechanism constantly affects the recovery of diseases and the well-being of patients. Key medical challenges persist in devising effective pain management strategies. Therefore, a comprehensive review of relevant methods and research advancements in pain management is conducted. This overview covers the main categorization of pain and its developmental mechanism, followed by a review of pertinent research and techniques for managing pain. These techniques include commonly prescribed medications, invasive procedures, and noninvasive physical therapy methods used in rehabilitation medicine. Additionally, for the first time, a systematic summary of the utilization of responsive biomaterials in pain management is provided, encompassing their response to physical stimuli such as ultrasound, magnetic fields, electric fields, light, and temperature, as well as changes in the physiological environment like reactive oxygen species (ROS) and pH. Even though the application of responsive biomaterials in pain management remains limited and at a fundamental level, recent years have seen the examination and debate of relevant research findings. These profound discussions aim to provide trends and directions for future research in pain management.