Pain in adults with intellectual disabilities

Unique Pain Responses in Different Etiological Subgroups of Intellectual and Developmental Disabilities

We studied whether there exist variations in pain responses between different intellectual and developmental disability (IDD) etiologies. Self-reports and facial expressions (Facial Action Coding System = FACS) were recorded during experimental pressure stimuli and compared among 31 individuals with IDD-13 with cerebral palsy (CP), nine with Down syndrome (DS), nine with unspecified origin (UIDD)-and among 15 typically developing controls (TDCs). The CP and DS groups had higher pain ratings and FACS scores compared to the UIDD and TDC groups, and steeper stimulus-response functions. The DS group exhibited the most diverse facial expressions. There were variations in the foci of facial expressions between groups. It appears that different IDD etiologies display distinct pain responses.

Mirror therapy for phantom limb pain in moderate intellectual disability. A case report

BACKGROUND

Phantom limb pain (PLP) is a common problem after limb amputation. There is mounting evidence supporting the use of mirror therapy (MT) in the treatment of individuals with PLP. However, there is no research studying the effects of MT on PLP in individuals with intellectual developmental disorders (IDD). The aim of this study was to increase our understanding of MT when used with adults with IDD and PLP through a case study approach.

METHODS

Here, we describe the use of MT with a 53-year-old female with moderate IDD and PLP, related to her left leg being amputated after ulcer complications. The study followed an A-B-A-B design (baseline-treatment-withdrawal of treatment-re-introduction of treatment), lasting 2 years, which included a long-term follow-up.

RESULTS

The data showed that the PLP sensation decreased after the MT treatment, with a raw change of 3.92 points and a 48% decrease in mean pain intensity ratings from pre- to post-treatment.

CONCLUSIONS

This is a unique case-report on the use of MT with an individual with IDD suffering from PLP. The findings show that MT helped to significantly reduce the intensity of the PLP in this patient.

SIGNIFICANCE

This is a case-report that illustrates how mirror therapy can be applied to people with intellectual developmental disorders and phantom limb pain. The results showed that phantom limb pain decreased after the mirror therapy, with a raw change of 3,92 points and a percent change of 48%.

Validity of the Rotterdam Elderly Pain Observation Scale for institutionalised cognitively impaired Dutch adults

BACKGROUND

The Rotterdam Elderly Pain Observation Scale (REPOS) has not yet been validated for institutionalised cognitively impaired adults. To fill this gap of knowledge, we tested psychometric properties of the REPOS when used for pain assessment in this population.

METHODS

In this multicentre observational study, residents were filmed during a possibly painful moment and at rest. Healthcare professionals were asked to rate residents' pain by means of a Numeric Rating Scale (NRS)-proxy. Two researchers assessed pain with the REPOS and the Chronic Pain Scale for Non Verbal Adults with Intellectual Disabilities (CPS-NAID) from video-recordings.

RESULTS

In total, 168 observations from 84 residents were assessed. Inter-observer reliability between the two researchers was good, with Cohen's kappa 0.72 [95% confidence interval (CI) 0.64 to 0.79]. Correlation between the REPOS and CPS-NAID for a possibly painful moment was 0.73 (95% CI 0.65 to 0.79). Sensitivity (85%) and specificity (61%) for the detection of pain were calculated with REPOS ≥ 3 and NRS ≥ 4 as a reference value. Item response theory analysis shows that the item grimace displayed perfect discrimination between residents with and without pain.

CONCLUSION

The REPOS is a reliable and valid instrument to assess pain in cognitively impaired individuals.

Growing up with Fragile X Syndrome: Concerns and Care Needs of Young Adult Patients and Their Parents

Little is known about care needs of young adults with Fragile X Syndrome (FXS). Patient-driven information is needed to improve understanding and support of young adults with FXS. A qualitative study was performed in 5 young adult patients (aged 18–30), and 33 parents of young adults. Concerns and care needs were categorized using the International Classification of Functioning, Disability, and Health. Results indicated concerns on 14 domains for males, and 13 domains for females, including physical, psychological and socio-economical issues. In both groups parents reported high stress levels and a lack of knowledge of FXS in adult care providers. This study revealed concerns on various domains, requiring gender-specific, multidisciplinary transitional care and adult follow-up for patients with FXS.

Discovery and validation of biomarkers to aid the development of safe and effective pain therapeutics: challenges and opportunities

Pain medication plays an important role in the treatment of acute and chronic pain conditions, but some drugs, opioids in particular, have been overprescribed or prescribed without adequate safeguards, leading to an alarming rise in medication-related overdose deaths. The NIH Helping to End Addiction Long-term (HEAL) Initiative is a trans-agency effort to provide scientific solutions to stem the opioid crisis. One component of the initiative is to support biomarker discovery and rigorous validation in collaboration with industry leaders to accelerate high-quality clinical research into neurotherapeutics and pain. The use of objective biomarkers and clinical trial end points throughout the drug discovery and development process is crucial to help define pathophysiological subsets of pain, evaluate target engagement of new drugs and predict the analgesic efficacy of new drugs. In 2018, the NIH-led Discovery and Validation of Biomarkers to Develop Non-Addictive Therapeutics for Pain workshop convened scientific leaders from academia, industry, government and patient advocacy groups to discuss progress, challenges, gaps and ideas to facilitate the development of biomarkers and end points for pain. The outcomes of this workshop are outlined in this Consensus Statement.

Pain interventions in adults with intellectual disability: A scoping review and pharmacological considerations

BACKGROUND AND OBJECTIVE

Having to deal on a daily routine with prescriptions in adults with intellectual disability (ID), we systematically reviewed the literature on the specificities of pain interventions in that population, focusing on medication and trying to gather practical information on appropriate pain treatments. Given the scarcity of the literature on the topic, we also discussed the pharmacological considerations to be taken into account when prescribing analgesic drugs in that vulnerable population.

DATABASES AND DATA TREATMENT

Articles on pain and ID were searched in the Medline and Google scholar electronic databases using the key words "Intellectual Disability," "Developmental Disability" and specific keywords for pharmacological and non-pharmacological pain interventions. Preset outcomes about pharmacological treatment specificity, efficacy and safety were then collected.

RESULTS

One hundred and fifty-two articles were found and 16 were retained based on our inclusion and exclusion criteria. Of the 16 articles, five were topical reviews. Among the 11 remaining articles, five discussed pharmacological interventions, four considered non-pharmacological interventions and two discussed both. As anticipated, the literature matching our specific outcomes about the pharmacological treatment of pain was scarce and for the most part not designed to answer the questions of specificity, efficacy and safety of pain treatment in adults with ID.

CONCLUSION

The specificity of analgesic treatments in adults with ID is a totally unexplored domain. In the absence of clinical guidelines, pharmacological facts-such as inter-individual variability in drug response, pharmacokinetic and pharmacodynamic interactions, frequent co-morbidities and ease of administration-must be systematically integrated, when prescribing in the population of adults with ID.

SIGNIFICANCE

This review synthesizes the state of research on pain interventions in adults with ID and is one of the rare articles addressing the specificities of analgesic prescriptions in this population.

Cancer Pain in People With Intellectual Disabilities: Systematic Review and Survey of Health Care Professionals

CONTEXT

Owing to life expectancy improvements for people with intellectual disabilities, their risk of developing cancer is increasing. Pain is an inevitable aspect of cancerous diseases. However, as pain experience and expression can be atypical in people with intellectual disabilities, this population is vulnerable to late diagnosis of cancer and undertreatment of cancer pain.

OBJECTIVES

The objective of this study was to investigate what is currently known about cancer pain in people with intellectual disabilities and provide specific recommendations to improve this knowledge.

METHODS

A systematic review using PubMed, PsycINFO, and CINAHL and an anonymous online survey of Dutch health care professionals were conducted.

RESULTS

From 10,146 publications, with intellectual disabilities in the title, and pain or cancer in the title or abstract, 11 articles underwent qualitative synthesis. Discussions within these articles were predominantly unspecific and brief, frequently indicating challenges in symptom presentation, communication, as well as assessment and treatment of cancer pain. The survey received 102 responses. The 63 health care professionals experienced with cancer in people with intellectual disabilities indicated challenges recognizing, assessing, and treating their cancer pain.

CONCLUSION

Cancer pain in people with intellectual disabilities is a topic lacking specific and comprehensive research within scientific literature. We suggest this is due to inherent difficulties regarding the complex interplay of comorbidities and communication issues in people with intellectual disabilities.

Nursing people with intellectual disability and dementia experiencing pain: An integrative review

AIMS AND OBJECTIVES

To explore the current evidence of nurses caring for people with intellectual disability and dementia who experience pain.

BACKGROUND

People with intellectual disability are ageing and are experiencing age-related health conditions including dementia and conditions associated with pain, but at an earlier age. Addressing the needs of people with intellectual disability who develop dementia is a new challenge for nurses.

DESIGN

An integrative literature review.

METHODS

A systematic search of databases: CINAHL, MEDLINE, PsycINFO, Cochrane, EMBASE, Academic Search Complete, Scopus and Web of Science between 27 October 2017-7 November 2017. Hand searching and review of secondary references were also undertaken. Quality appraisal (Crowe Critical Appraisal Tool), thematic data analysis (Braun and Clarke, Qualitative Research in Psychology, 3, 2006, 77) and reporting using the PRISMA guidelines.

RESULTS

Seven papers met the inclusion criteria, and three themes emerged from this review: nurses knowledge of ageing, dementia and pain; recognising pain in people with intellectual disability and dementia; and the role of nurse education. People with intellectual disability and dementia have difficulty communicating their pain experience compounded by pre-existing communication difficulties.

CONCLUSIONS

A pain experience can present similar to behavioural and psychological symptoms of dementia, and diagnostic overshadowing often occurs whereby a pain need is misinterpreted as behavioural and psychological symptoms resulting in inappropriate treatment. Nurses need greater knowledge about the presence of pain and potential causes in people with intellectual disability and dementia, and education can be effective in addressing this knowledge deficit.

RELEVANCE TO CLINICAL PRACTICE

Pain assessment tools for people with intellectual disability and dementia need to include behavioural elements, and baseline assessments are required to identify changes in presentation. Nurses need to recognise and respond to pain based on the evidence in order to deliver quality care.

Pain and Pain Medication among Older People with Intellectual Disabilities in Comparison with the General Population

Little is known about pain and pain treatment among people with intellectual disabilities (IDs). We aimed to describe pain and pain medications among older people with ID compared to the general population. Data on diagnoses and prescriptions were collected from national registers for the period between 2006 and 2012 for 7936 people with an ID and a referent cohort from the general population. IDs were associated with a decreased risk of being diagnosed with headaches, musculoskeletal pain, and pain related to the circulatory and respiratory systems, but they were associated with increased risk of being diagnosed with pain related to the urinary system. Among men, IDs were associated with an increased risk of being diagnosed with visceral pain. People with IDs were more likely to be prescribed paracetamol and fentanyl regardless of the type of pain but were less likely to be prescribed COX(1+2) and COX2 inhibitors and weak opioids. Healthcare staff and caregivers must be made aware of signs of pain among people with IDs who may not be able to communicate it themselves. Further research is needed to investigate whether people with IDs are prescribed paracetamol rather than other pain drugs due to physicians trying to avoid polypharmacy or if there are other reasons not to prescribe a greater range of pain treatments.

The Rotterdam Elderly Pain Observation Scale (REPOS) is reliable and valid for non-communicative end-of-life patients

BACKGROUND

In palliative care, administration of opioids is often indispensable for pain treatment. Pain assessment may help recognize pain and guide treatment in non-communicative patients. In the Netherlands the Rotterdam Elderly Pain Observation Scale (REPOS) is recommended to this aim, but not yet validated. Therefore the objective of this study was to validate the REPOS in non-communicative or unconscious end-of-life patients.

METHODS

In this observational study, the primary researcher applied the REPOS, while both the researcher and a nurse applied the Numeric Rating Scale (NRS). If possible, the patient in question applied the NRS as well. The NRS scores were compared with the REPOS scores to determine concurrent validity. REPOS scores obtained before and after a pain-reducing intervention were analysed to establish the scale's sensitivity to change.

RESULTS

A total of 183 REPOS observations in 100 patients were analysed. Almost 90% of patients had an advanced malignancy; observations were done a median of 3 days (IQR 1 to 13) before death. Internal consistency of the REPOS was 0.73. The Pearson product moment correlation coefficient ranged from 0.64 to 0.80 between REPOS and NRS scores. REPOS scores declined with median 2 points (IQR 1 to 4) after a pain-reducing intervention (p < 0.001). Optimal sensitivity (0.81) and specificity (0.62) were found at cut-off score 3.

CONCLUSIONS

This study demonstrates that the REPOS has promising psychometric properties for pain assessment in non-communicative end-of-life patients. Its application may be of additional value to relieve suffering, including pain, in palliative care.

Physiological and Behavioral Responses to Calibrated Noxious Stimuli Among Individuals with Cerebral Palsy and Intellectual Disability

Objective

As individuals with intellectual disability (ID) due to cerebral palsy (CP) are at high risk of experiencing pain, measuring their pain is crucial for adequate treatment. While verbal reports are the gold standard in pain measurements, they may not be sufficient in ID. The aim was to detect behavioral/autonomic responses that may indicate the presence and intensity of pain in individuals with CP and ID, using calibrated stimuli, here for the first time.

Subjects

Thirteen adults with CP and ID (CPID), 15 healthy controls (HC), and 5 adults with CP with no ID (CPNID).

Methods

Subjects received pressure stimuli of various intensities. Self-reports (using a pyramid scale), facial expressions (retrospectively analyzed with Facial Action Coding System = FACS), and autonomic function (heart rate, heart rate variability, pulse, galvanic skin response) were analyzed.

Results

Self-reports and facial expressions but not the autonomic function exhibited stimulus-response relationship to pressure stimulation among all groups. The CPID group had increased pain ratings and facial expressions compared with controls. In addition, the increase in facial expressions along the increase in noxious stimulation was larger than in controls. Freezing in response to pain was frequent in CPID.

Conclusions

1) Individuals with CP and ID have increased responses to pain; 2) facial expressions and self-reports, but not autonomic variables can reliably indicate their pain intensity; 3) the pyramid scale is suitable for self-report in this population. Although facial expressions may replace verbal reports, increased facial expressions at rest among these individuals may mask pain, especially at lower intensities.

Apolipoprotein E ɛ4, Cognitive Function, and Pain Experience in Down Syndrome: A Pilot Study

OBJECTIVE

The presence of apolipoprotein E (ApoE) ɛ4 allele might be related to higher pain experience due to increased risk for potentially painful physical conditions and cognitive impairment (less efficient coping with pain). This hypothesis is clinically relevant to examine in adults with Down syndrome (DS) because they are at risk for painful physical conditions, their presence of ApoE ε4 is related to cognitive impairment, and their pain experience is unclear. The present pilot study addressed the associations between ApoE genotype, cognition, and pain in DS.

METHOD

DNA analysis of saliva, neuropsychological tests (assessing memory and executive functioning), and self-reporting pain scales (in rest and after movement) were used with a cross-sectional design in 146 adults with DS (mean age 39.1 years, mild to moderate intellectual disabilities, 46% men, 30% ApoE ɛ4 carrier).

RESULTS

The difference between ApoE ɛ4 carriers and noncarriers was not statistically significant for cognitive function, pain experience, and prevalence of potentially painful conditions. Among ɛ4 carriers, the presence of potentially painful conditions was associated with worse executive functioning (p = .022, r = .39).

CONCLUSIONS

The clinical implication of the results is that ApoE ɛ4 in DS may play a role in pain, although the theoretical explanation via associations with pain experience and cognition remains unclear. Further research should include a large sample of adults with DS selected on diagnosed painful conditions to obtain more insight into the possible role of ApoE genotype (and its association with cognition) in the pain experience of this target group.

Pain in Intellectually Disabled Children: Towards Evidence-Based Pharmacotherapy?

This critical opinion article deals with the challenges of finding the most effective pharmacotherapeutic options for the management of pain in intellectually disabled children and provides recommendations for clinical practice and research. Intellectual disability can be caused by a wide variety of underlying diseases and may be associated with congenital anomalies such as cardiac defects, small-bowel obstructions or limb abnormalities as well as with comorbidities such as scoliosis, gastro-esophageal reflux disease, spasticity, and epilepsy. These conditions themselves or any necessary surgical interventions are sources of pain. Epilepsy often requires chronic pharmacological treatment with antiepileptic drugs. These antiepileptic drugs can potentially cause drug-drug interactions with analgesic drugs. It is unfortunate that children with intellectual disabilities often cannot communicate pain to caregivers. Although these children are at high risk of experiencing pain, researchers nevertheless often have to exclude them from trials on pain management because of ethical considerations. We therefore make a plea for prescribers, researchers, patient organizations, pharmaceutical companies, and policy makers to study evidence-based, safe and effective pharmacotherapy in these children through properly designed studies. In the meantime, parents and clinicians must resort to validated pain assessment tools such as the revised FLACC scale.

Cognitive behavioural therapy for chronic pain in people with an intellectual disability: a case series using components of the Feeling Better programme

BACKGROUND

Cognitive behavioural therapy (CBT) has been shown to be effective in assisting people to cope with chronic pain. However, this approach has not been systematically evaluated with people with an intellectual disability (ID). This pilot study sought to examine the feasibility and clinical utility of CBT for people with an ID, using elements of a manualised CBT pain management programme called Feeling Better.

METHOD

Five people with chronic pain who were functioning within the mild range of ID received a modified, individual eight-session cognitive behavioural intervention aimed at development of pain management skills. The participants' scores on a range of measures (pain management knowledge, pain self-efficacy, use of pain coping strategies and effectiveness of coping strategies) were compared pre-intervention, post-intervention and at 1-month follow-up.

RESULTS

The results indicated that participant scores on pain management knowledge, wellness-focused coping and effectiveness of coping increased following the intervention. However, these gains were generally not maintained at follow-up.

CONCLUSION

We concluded that CBT has potential utility for pain management in people with an ID, but that it requires a trial of a more intensive and prolonged intervention with the systematic involvement of care givers.

Prevalence of pain in institutionalized adults with intellectual disabilities: a cross-sectional approach

Information about pain prevalence in institutionalized individuals with intellectual disabilities is scarce, most likely because communication problems impede pain assessment. We aimed to inventory pain prevalence and actual pain management in intellectually disabled individuals living in a representative special care facility in the Netherlands. Caregivers rated the residents' present pain and overall pain during the preceding week on an 11-point numerical rating scale (NRS-11). In addition, behavioral pain assessment was performed with validated pain scales; the Rotterdam Elderly Pain Observation Scale (REPOS) or Checklist Pain Behavior (CPG). Ratings suggested that 47 of the 255 included residents (18%) suffered from pain either at present or during the preceding week, 14 of whom (30%) experienced pain on both occasions. Most of these 47 (85%) residents with pain had no analgesic prescription, not even in the case of severe pain (NRS 7 or higher). Ratings for nearly one out of every five residents suggested they suffered pain. This proportion is lower than in other studies and could imply that caregivers probably underestimate residents' prevalence of pain. Pain treatment might be inadequate in light of the low percentage of analgesic prescriptions. To prevent unnecessary suffering in institutes for residents with an intellectual disability (ID) we recommend use of a pain protocol including a validated pain measurement instrument.

Behavioral pain indicators in people with intellectual disabilities: a systematic review

People with intellectual disabilities (IDs) have a higher risk of painful medical conditions. Partly because of the impaired ability to communicate about it, pain is often undertreated. To strengthen pain assessment in this population, we conducted a systematic review to identify behavioral pain indicators in people with IDs by using Embase, PubMed, PsycINFO, CINAHL, and Cochrane. Inclusion criteria were 1) scientific papers; 2) published in the last 20 years, that is, 1992 to 2012; 3) written in English, 4) using human subjects, 5) intellectual disabilities, 6) pain, 7) behavior, and 8) an association between observable behavior and pain experience. From 527 publications, 27 studies were included. Pain was acute in 14 studies, chronic in 2 studies, both acute and chronic in 2 studies, and unspecified in 9 studies. Methodological quality was assessed with the Mixed Methods Appraisal Tool. Of the 14 categories with behavioral pain indicators, motor activity, facial activity, social-emotional indicators, and nonverbal vocal expression were the most frequently reported. Most of the behavioral pain indicators are reported in more than 1 study and form a possible clinical relevant set of indicators for pain in people with IDs. Determination of a behavioral pattern specific for pain, however, remains a challenge for future research.

PERSPECTIVE

This review focuses on categories of behavior indicators related to pain in people with IDs. The quality of evidence is critically discussed per category. This set of indicators could potentially help clinicians to recognize pain in this population, especially when unique individual pain responses are also identified.