Poverty and pain: Low-SES people are believed to be insensitive to pain

Social Determinants and Consequences of Pain: Towards Multilevel, Intersectional, and Life Course Perspectives

Despite wide endorsement of a biopsychosocial framework for pain, social aspects of pain remain rarely addressed in the context of pain prevention and management. In this review, we aim to: 1) examine the broad scope of social determinants and consequences of pain and their interactions across multiple levels of organization, and 2) provide a framework synthesizing existing concepts and potential areas for future work on social aspects of pain, drawing upon socioecological, intersectional, and life course approaches. Integrating interdisciplinary theory and evidence, we outline pathways through which multilevel social factors and pain may affect each other over time. We also provide a brief summary of intrapersonal aspects of pain which are thought to operate at the interface between individuals and the social context. Progressing from micro- to macro-level factors, we illustrate how social determinants of pain can directly or indirectly contribute to pain experiences, expression, risk, prognosis, and impact across populations. We consider: a) at the interpersonal level, the roles of social comparison, social relatedness, social support, social exclusion, empathy and interpersonal conflict; b) at the group or community level, the roles of intimacy groups, task groups, social categories, and loose associations; and c) at the societal level, the roles of political, economic, and cultural systems, as well as their policies and practices. We present examples of multilevel consequences of pain across these levels and discuss opportunities to reduce the burden and inequities of pain by expanding multilevel social approaches in pain research and practice. PERSPECTIVE: Despite wide endorsement of a biopsychosocial framework for pain, social aspects of pain are often unclearly defined, hindering their use in pain prevention, management, and research. We summarize the scope of social aspects of pain and provide a framework synthesizing existing concepts and potential areas for future work.

Assessing Risk Factors and Comorbidities in the Treatment of Chronic Pain: A Narrative Review

PURPOSE OF REVIEW

Chronic pain affects a significant portion of the population globally, making it a leading cause of disability. Understanding the multifaceted nature of chronic pain, its various types, and the intricate relationship it shares with risk factors, comorbidities, and mental health issues like depression and anxiety is critical for comprehensive patient care. Factors such as socioeconomic status (SES), age, gender, and obesity collectively add layers of complexity to chronic pain experiences and pose management challenges.

RECENT FINDINGS

Low SES presents barriers to effective pain care, while gender differences and the prevalence of chronic pain in aging adults emphasize the need for tailored approaches. The association between chronic pain and physical comorbidities like cardiovascular disease, chronic obstructive pulmonary disease (COPD), and diabetes mellitus reveals shared risk factors and further highlights the importance of integrated treatment strategies. Chronic pain and mental health are intricately linked through biochemical mechanisms, profoundly affecting overall quality of life. This review explores pharmacologic treatment for chronic pain, particularly opioid analgesia, with attention to the risk of substance misuse and the ongoing opioid epidemic. We discuss the potential role of medical cannabis as an alternative treatment with a nuanced perspective on its impact on opioid use. Addressing the totality and complexity of pain states is crucial to individualizing chronic pain management. With different types of pain having different underlying mechanisms, considerations should be made when approaching their treatment. Moreover, the synergistic relationship that pain states can have with other comorbidities further complicates chronic pain conditions.

Social Class and Social Pain: Target SES Biases Judgments of Pain and Support for White Target Individuals

Social pain, defined as distress caused by negative interpersonal experiences (e.g., ostracism, mistreatment), is detrimental to health. Yet, it is unclear how social class might shape judgments of the social pains of low-socioeconomic status (SES) and high-SES individuals. Five studies tested competing toughness and empathy predictions for SES's effect on social pain judgments. Consistent with an empathy account, in all studies (Ncumulative = 1,046), low-SES White targets were judged more sensitive to social pain than high-SES White targets. Further, empathy mediated these effects, such that participants felt greater empathy and expected more social pain for low-SES targets relative to high-SES targets. Social pain judgments also informed judgments of social support needs, as low-SES targets were presumed to need more coping resources to manage hurtful events than high-SES targets. The current findings provide initial evidence that empathic concern for low-SES White individuals sensitizes social pain judgments and increases expected support needs for lower class White individuals.

The impact of sufferers' wealth status on pain perceptions: Its development and relation to allocation of healthcare resources

Wealth-based disparities in health care wherein the poor receive undertreatment in painful conditions are a prominent issue that requires immediate attention. Research with adults suggests that these disparities are partly rooted in stereotypes associating poor individuals with pain insensitivity. However, whether and how children consider a sufferer's wealth status in their pain perceptions remains unknown. The present work addressed this question by testing 4- to 9-year-olds from the US and China. In Study 1 (N = 108, 56 girls, 79% White), US participants saw rich and poor White children experiencing identical injuries and indicated who they thought felt more pain. Although 4- to 6-year-olds responded at chance, children aged seven and above attributed more pain to the poor than to the rich. Study 2 with a new sample of US children (N = 111, 56 girls, 69% White) extended this effect to judgments of White adults' pain. Pain judgments also informed children's prosocial behaviors, leading them to provide medical resources to the poor. Studies 3 (N = 118, 59 girls, 100% Asian) and 4 (N = 80, 40 girls, 100% Asian) found that, when evaluating White and Asian people's suffering, Chinese children began to attribute more pain to the poor than to the rich earlier than US children. Thus, unlike US adults, US children and Chinese children recognize the poor's pain from early on. These findings add to our knowledge of group-based beliefs about pain sensitivity and have broad implications on ways to promote equitable health care. RESEARCH HIGHLIGHTS: Four studies examined whether 4- to 9-year-old children's pain perceptions were influenced by sufferers' wealth status. US children attributed more pain to White individuals of low wealth status than those of high wealth status by age seven. Chinese children demonstrated an earlier tendency to attribute more pain to the poor (versus the rich) compared to US children. Children's wealth-based pain judgments underlied their tendency to provide healthcare resources to people of low wealth status.

Not all ballots should be considered equal: How education-based dehumanization undermines the democratic social contract

Less educated people are viewed negatively and their opinions are belittled in our society. Besides, along with other groups, they are underrepresented in the political arena which questions the legitimacy of democratic systems. Despite the existence of education-based devaluation, research on how people dehumanize individuals and groups with lesser education and minimize their democratic rights is scarce. In this project, we provide correlational evidence that less (vs. highly) educated individuals and groups are dehumanized (Study 1a, N = 304) and their democratic rights (voting, running for office) are questioned (Study 1b, N = 504). Furthermore, we identified that dehumanization tendencies of the less (vs. highly) educated targets predict support for denying them voting rights or the capability to run for public candidacies (Study 2, N = 447). Finally, an experimental study confirmed that the target's educational background influences attributions of humanity, which in turn seem to affect the denial of democratic rights to the target (Study 3, N = 470). These findings suggest that education-based dehumanization might undermine the inalienable democratic rights of lesser educated individuals and groups thus endangering the foundations of democratic systems.

Disparities in access but not outcomes: Medicaid versus non-Medicaid patients in multidisciplinary chronic pain rehabilitation

Purpose: There are known disparities in chronic pain severity, treatment, and opioid-related risks amongst individuals from lower socioeconomic status, including Medicaid beneficiaries, but little is known about whether Medicaid beneficiaries benefit in a similar way from multidisciplinary chronic pain rehabilitation. This study investigated differences in clinical outcomes between Medicaid and non-Medicaid beneficiaries who completed a 3-week multidisciplinary chronic pain rehabilitation program.Methods: Participants (N = 131) completed a broad range of clinical measures pre- and post-treatment including pain severity, pain interference, depression, anxiety, objective physical functioning, and opioid misuse risk. Patients with Medicaid were compared with non-Medicaid patients in terms of baseline characteristics and rate of change, utilizing two-factor repeated measures analyses of variance.Results: There were baseline characteristic differences, with Medicaid beneficiaries being more likely to be African American, have higher rates of pain, worse physical functioning, and lower rates of opioid use. Despite baseline differences, both groups demonstrated significantly improved outcomes across all measures (p<.001) and no significant difference in rate of improvement.Conclusions: Results suggest that pain rehabilitation is as effective for Medicaid recipients as non-Medicaid recipients. Patients with Medicaid are particularly vulnerable to disparities in treatment, so efforts to expand access to multidisciplinary pain treatments are warranted.

Biased Beliefs About White Releasees' Sensitivity to Social Pain

The accurate perception of others' pain is a prerequisite to provide needed support. However, social pain perception is prone to biases. Multiple characteristics of individuals bias both physical and social pain judgments (e.g., ethnicity and facial structure). The current work extends this research to a chronically stigmatized population: released prisoners (i.e., releasees). Recognizing the large United States releasee rates and the significant role support plays in successful re-integration, we conducted four studies testing whether people have biased judgments of White male releasees' sensitivity to social pain. Compared with the noncriminally involved, people judged releasees as less sensitive to social pain in otherwise identical situations (Studies 1a-3), an effect that was mediated by perceived life hardship (Study 2). Finally, judging releasees' as relatively insensitive to social pain undermined perceivers' social support judgments (Study 3). The downstream consequences of these findings on re-integration success are discussed.

Women exaggerate, men downplay: Gendered endorsement of emotional dramatization stereotypes contributes to gender bias in pain expectations

The current work tested whether perceivers believe that women, relative to men, are likely to exaggerate versus downplay pain, an effect we refer to as the gender-pain exaggeration bias. The gender-pain exaggeration bias was operationalized as the extent to which perceivers believe women, relative to men, claim more pain than they feel. Across four experiments, we found that women were expected to exaggerate pain more than men and men were expected to downplay pain more than women (Studies 1-4). Further, judgments that women were more emotionally dramatizing than men contributed to this gender-pain exaggeration bias (Studies 2 and 4). We also assessed whether perceiver-level differences in endorsement of gendered emotional dramatization stereotypes (Studies 3-4) moderated this gender-pain exaggeration bias and found that endorsement of gendered emotional dramatization stereotypes moderated this bias. In sum, we document a relative gender-pain exaggeration bias wherein perceivers believe women, relative to men, to be emotionally dramatizing and therefore more likely to exaggerate versus downplay their pain. This bias may lead perceivers to interpret women's, relative to men's, pain reports as overstatements, inauthentic, or dramatized. Thus, the current work may have implications for well-documented biases in perceptions of (i.e., underestimating) and responses to (i.e., undertreating) women's pain.

Why Do People Think Individuals in Poverty Are Less Vulnerable to Harm?: Testing the Role of Intuitions About Adaptation

People often falsely believe that individuals from low socioeconomic status (SES) backgrounds are less harmed than those from higher SES backgrounds by a wide range of negative events. We report three studies (total N = 1,625) that provide evidence that this "thick skin bias" emerges at least in part because people overgeneralize otherwise accurate intuitions about adaptation. Across studies, participants accurately intuited that people adapt to psychophysical experiences (e.g., brightness, weight, and volume) but also inaccurately intuited that people similarly adapt to life hardships that actually tend to exacerbate the harm of future negative events. Experimentally decreasing the salience of psychophysical adaptation intuitions reduced the thick skin bias, suggesting a causal link between these adaptation intuitions and the belief that people in poverty are less vulnerable to harm and underlining the importance of studying how biased beliefs about the effects of poverty may perpetuate inequality.

Race-based biases in psychological distress and treatment judgments

Racism creates and sustains mental health disparities between Black and White Americans and the COVID-19 pandemic and ongoing harassment directed at Black Americans has exacerbated these inequities. Yet, as the mental health needs of Black Americans rise, there is reason to believe the public paradoxically believes that psychopathology hurts Black individuals less than White individuals and these biased distress judgments affect beliefs about treatment needs. Four studies (two pre-registered) with participants from the American public and the field of mental health support this hypothesis. When presented with identical mental illnesses (e.g., depression, anxiety, schizophrenia), both laypeople and clinicians believed that psychopathology would be less distressing to Black relative to White individuals. These distress biases mediate downstream treatment judgments. Across numerous contexts, racially-biased judgments of psychological distress may negatively affect mental healthcare and social support for Black Americans.

The quality of care index for low back pain: a systematic analysis of the global burden of disease study 1990-2017

BACKGROUND

. Low back pain is one of the major causes of morbidity worldwide. Studies on low back pain quality of care are limited. This study aimed to evaluate the quality of care of low back pain worldwide and compare gender, age, and socioeconomic groups.

METHODS

. This study used GBD data from 1990 to 2017 from the Institute for Health Metrics and Evaluation (IHME) website. Extracted data included low back pain incidence, prevalence, disability-adjusted life years (DALYs), and years lived with disability (YLDs). DALYs to prevalence ratio and prevalence to incidence ratio were calculated and used in the principal component analysis (PCA) to make a proxy of the quality-of-care index (QCI). Age groups, genders, and countries with different socioeconomic statuses regarding low back pain care quality from 1990 to 2017 were compared.

RESULTS

The proxy of QCI showed a slight decrease from 36.44 in 1990 to 35.20 in 2017. High- and upper-middle-income countries showed a decrease in the quality of care from 43.17 to 41.57 and from 36.37 to 36.00, respectively, from 1990 to 2017. On the other hand, low and low-middle-income countries improved, from a proxy of QCI of 20.99 to 27.89 and 27.74 to 29.36, respectively.

CONCLUSION

. Despite improvements in the quality of care for low back pain in low and lower-middle-income countries between 1990 and 2017, there is still a large gap between these countries and higher-income countries. Continued steps must be taken to reduce healthcare barriers in these countries.

Veterinary education and experience shape beliefs about dog breeds Part 1: Pain sensitivity

Over 95% of veterinarians report believing that dog breeds differ in pain sensitivity. Ratings made by veterinarians differ from those of the general public, suggesting these beliefs may be learned during veterinary training or clinical experiences. Therefore, the current study's primary objective was to evaluate dog breed pain sensitivity ratings during veterinary training and compare these ratings to those of the general public and undergraduates in animal-health related fields. Using an online survey, members of the general public, undergraduates, veterinary students across all four years, and veterinary faculty and staff rated pain sensitivity of 10 different dog breeds, identified only by their pictures. Compared to the general public and undergraduates, veterinary students rated pain sensitivity across breeds of dog more similarly to veterinary faculty and staff. Further, when undergraduates had clinical experience, they also rated certain dog breeds in a similar way to the veterinary students and professionals. Our findings suggest that veterinary education and clinical experiences influence pain sensitivity ratings across dog breeds. Future research should identify how these pain sensitivity beliefs are communicated and whether these beliefs affect recognition and treatment of pain by veterinarians.

Pain and Disability Transitions Among Older Americans: The Role of Education

Previous literature has rarely examined the role of pain in the process of disablement. We investigate how pain associates with disability transitions among older adults, using educational attainment as a moderator. Data are from the National Health and Aging Trends Study, N = 6,357; 33,201 1 year transitions between 2010 to 2020. We estimate multinomial logistic models predicting incidence or onset of and recovery from functional limitation and disability. Results show pain significantly predicts functional limitation and disability onset 1 year after a baseline observation, and decreases odds of recovery from functional limitation or disability. Contrary to expectations, higher education does not buffer the association of pain in onset of disability, but supporting expectations, it facilitates recovery from functional limitation or disability among those with pain. The analysis implicates pain as having a key role in the disablement process and suggests that education may moderate this with respect to coping with and subsequently recovering from disability. PERSPECTIVE: This article is among the first examining how pain is placed in the disablement process by affecting onset of and recovery from disability. Both paths are affected by pain, but education moderates the association only with respect to the recovery process.

How Pain-Related Facial Expressions Are Evaluated in Relation to Gender, Race, and Emotion

Inequities in pain assessment are well-documented; however, the psychological mechanisms underlying such biases are poorly understood. We investigated potential perceptual biases in the judgments of faces displaying pain-related movements. Across five online studies, 956 adult participants viewed images of computer-generated faces (“targets”) that varied in features related to race (Black and White) and gender (women and men). Target identity was manipulated across participants, and each target had equivalent facial movements that displayed varying intensities of movement in facial action-units related to pain (Studies 1–4) or pain and emotion (Study 5). On each trial, participants provided categorical judgments as to whether a target was in pain (Studies 1–4) or which expression the target displayed (Study 5) and then rated the perceived intensity of the expression. Meta-analyses of Studies 1–4 revealed that movement intensity was positively associated with both categorizing a trial as painful and perceived pain intensity. Target race and gender did not consistently affect pain-related judgments, contrary to well-documented clinical inequities. In Study 5, in which pain was equally likely relative to other emotions, pain was the least frequently selected emotion (5%). Our results suggest that perceivers can utilize facial movements to evaluate pain in other individuals, but perceiving pain may depend on contextual factors. Furthermore, assessments of computer-generated, pain-related facial movements online do not replicate sociocultural biases observed in the clinic. These findings provide a foundation for future studies comparing CGI and real images of pain and emphasize the need for further work on the relationship between pain and emotion.

Orthopaedic trauma patient non-adherence to follow-up visits at a level 1 trauma center serving an urban and rural population

OBJECTIVE

To assess key demographic and psychosocial variables that may be associated with non-adherence to clinic visits following orthopaedic trauma injuries to patients in an urban and rural population.

METHODS

This retrospective review included all operative and non-operative patients presenting to a Level I academic trauma center serving an urban and rural population in the Midwest following an orthopaedic injury. The study tracked patient attendance to scheduled orthopaedic trauma follow-up clinic visits after a scheduled visit in the clinic following a trauma-related injury.

RESULTS

Data were obtained for 5816 unique orthopaedic trauma patients who had 21,066 post-treatment follow-up visits scheduled. 1627 "no-show" appointments were recorded. Factors associated with no-shows included male sex, age between 26 and 35 years, self-reported race other than white, employment listed as disabled, household income below $25,000, education less than a high school level, uninsured, Medicaid insured, and relationship status reported as single.

CONCLUSIONS

In the present study, key demographic and psychosocial factors were significantly associated with patient adherence to scheduled follow-up appointments after treatment for orthopaedic trauma. Identifying patients at higher risk for nonadherence will allow healthcare teams to educate patients, providers, and staff, link patients to resources to enhance adherence, and work with their institutions to develop and implement protocols for improving adherence to follow-up appointments.

Poor Toddlers Feel Less Pain? Application of Class-Based Pain Stereotypes in Judgments of Children

Across four studies, we investigated whether perceptions of children’s pain are influenced by their socioeconomic status (SES). We found evidence that children with low SES were believed to feel less pain than children with high SES (Study 1), and this effect was not moderated by child’s age (Study 2). Next, we examined life hardship as a mediator of this effect among children, finding that children with low SES were rated as having lived a harder life and thus as feeling less pain (Study 3). Finally, we examined downstream consequences for hypothetical treatment recommendations. We found that participants perceived children with low SES as less sensitive to pain and therefore as requiring less pain treatment than children with high SES (Study 4). Thus, we consistently observe that stereotypes of low-SES individuals as insensitive to pain may manifest in judgments of children and their recommended pain care. Implications of this work for theory and medical practice are discussed.

Simulating dynamic facial expressions of pain from visuo-haptic interactions with a robotic patient

Medical training simulators can provide a safe and controlled environment for medical students to practice their physical examination skills. An important source of information for physicians is the visual feedback of involuntary pain facial expressions in response to physical palpation on an affected area of a patient. However, most existing robotic medical training simulators that can capture physical examination behaviours in real-time cannot display facial expressions and comprise a limited range of patient identities in terms of ethnicity and gender. Together, these limitations restrict the utility of medical training simulators because they do not provide medical students with a representative sample of pain facial expressions and face identities, which could result in biased practices. Further, these limitations restrict the utility of such medical simulators to detect and correct early signs of bias in medical training. Here, for the first time, we present a robotic system that can simulate facial expressions of pain in response to palpations, displayed on a range of patient face identities. We use the unique approach of modelling dynamic pain facial expressions using a data-driven perception-based psychophysical method combined with the visuo-haptic inputs of users performing palpations on a robot medical simulator. Specifically, participants performed palpation actions on the abdomen phantom of a simulated patient, which triggered the real-time display of six pain-related facial Action Units (AUs) on a robotic face (MorphFace), each controlled by two pseudo randomly generated transient parameters: rate of change \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\beta $$\end{document}β and activation delay \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\tau $$\end{document}τ. Participants then rated the appropriateness of the facial expression displayed in response to their palpations on a 4-point scale from “strongly disagree” to “strongly agree”. Each participant (\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$n=16$$\end{document}n=16, 4 Asian females, 4 Asian males, 4 White females and 4 White males) performed 200 palpation trials on 4 patient identities (Black female, Black male, White female and White male) simulated using MorphFace. Results showed facial expressions rated as most appropriate by all participants comprise a higher rate of change and shorter delay from upper face AUs (around the eyes) to those in the lower face (around the mouth). In contrast, we found that transient parameter values of most appropriate-rated pain facial expressions, palpation forces, and delays between palpation actions varied across participant-simulated patient pairs according to gender and ethnicity. These findings suggest that gender and ethnicity biases affect palpation strategies and the perception of pain facial expressions displayed on MorphFace. We anticipate that our approach will be used to generate physical examination models with diverse patient demographics to reduce erroneous judgments in medical students, and provide focused training to address these errors.

Prevalence and correlates of pain and associated depression among community-dwelling older adults: Cross-sectional findings from LASI, 2017-2018

BACKGROUND

Health practitioners often meet older persons suffering both from pain and depression. The study aimed to examine the factors associated with pain among older individuals and its association with major depression. In addition, the interaction between self-rated health (SRH), wealth status, and pain that is associated with depression are explored.

METHODS

We used data from the Longitudinal Aging Study in India (LASI). Participants included 15,098 male and 16,366 female adults aged 60 years or older. Univariate and bivariate analyses along with χ² tests were conducted in the initial stage. Binary logistic regression analyses were performed to fulfill the objectives. Major depression was calculated using Short Form Composite International Diagnostic Interview.

RESULTS

A proportion of 39.6% older individuals (n = 12,686) reported pain and 8.7% older adults (n = 2657) suffered from depression. Older adults who suffered from pain frequently were more likely to be depressed than those who never suffered from pain (adjusted odds ratio [AOR]: 1.70; confidence interval [CI]: 1.38-2.09). The interaction of pain, SRH, and household wealth status on depression found that older adults with pain who reported poor SRH (AOR: 4.18; CI: 3.50-5.00) or belonged to rich households (AOR: 2.27; CI: 1.84-2.80) had higher odds of suffering from depression, compared to older adults with no pain and good SRH or no pain and belonged to poor households.

CONCLUSION

It is highlighted that pain is quite common in older people, and is linked to depression especially among older people with poor SRH. Thus, routine evaluation of pain and associated symptoms of mental illnesses should be performed for ensuring healthy aging.