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Cumulative effects of multiple pain sites in youth with chronic pain.

ABSTRACT: BACKGROUND:The experience of persistent pain in multiple locations is common in youth. Based on current literature, youth with multiple pain sites (MPS) are at risk of experiencing poorer emotional outcomes and a spread of symptoms into late adolescence and adulthood. Little is known regarding the association between MPS with physical and school functioning domains, particularly after initiation of multidisciplinary pain treatment. Therefore, the objective of this study was to examine the association of MPS with disability and school functioning among youth with chronic pain. METHODS:A total of 195 patients with chronic pain, aged 8-17, and their parents completed measures assessing patient distress and functioning at a multidisciplinary pain clinic evaluation and at 4-month follow-up. RESULTS:At evaluation, 63% of patients presented with MPS; 25% reporting MPS endorsed pain in five or more locations. When controlling for relevant demographic and emotional distress factors, MPS were associated with lower school functioning at evaluation with a persistent trend at follow-up. Although MPS were not a significant predictor of pain-related disability at evaluation, it emerged as significant at follow-up. CONCLUSIONS:Potentially due to the MPS load and the inverse effects that such a pain state has on function, such patients may be at risk for poorer health and school-related outcomes. The mechanisms influencing these relationships appear to extend beyond psychological/emotional factors and warrant further investigation in order to aid in our understanding of youth with MPS. SIGNIFICANCE:Youth with MPS may be at risk for experiencing poorer physical and school functioning in comparison with single-site peers, despite treatment initiation. Further research is warranted to inform assessment and treatment approaches for this subgroup of patients.

SUBMITTER: Basch MC

PROVIDER: S-EPMC5995652 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature

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Cumulative effects of multiple pain sites in youth with chronic pain.

Basch M C MC Chow E T ET Logan D E DE Borsook D D Schechter N L NL Simons L E LE

European journal of pain (London, England) 20180302 6

<h4>Background</h4>The experience of persistent pain in multiple locations is common in youth. Based on current literature, youth with multiple pain sites (MPS) are at risk of experiencing poorer emotional outcomes and a spread of symptoms into late adolescence and adulthood. Little is known regarding the association between MPS with physical and school functioning domains, particularly after initiation of multidisciplinary pain treatment. Therefore, the objective of this study was to examine th ...[more]

PMID: 29436161

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Project description:BACKGROUND:Chronic musculoskeletal pain (MSP) is frequent in adolescents and has major medical and social consequences. In many cases, when no cause has been clearly established, this pain may be considered to be chronic idiopathic MSP. Our study seeks to identify general criteria for this type of pain through the experience of professionals from tertiary care centers with expertise in pediatric and adolescent chronic MSP. METHODS:Cross-sectional multicenter qualitative study. Semi-structured interviews of 25 professionals at a rheumatology reference center and in its network for pain management, including diverse specialists and professions. Interpretative Phenomenological Analysis is used to explore the data. RESULTS:This approach led us to identify 10 themes organized around three superordinate themes covering different stages of the diagnostic process: 1) the medical pain history up to the consultation at the reference center; 2) the professional's subjective feelings about the clinical presentation; 3) from the clinical examination to diagnosis and treatment of chronic idiopathic MSP. The main elements guiding this diagnosis do not come from the physical examination but from the medical history and the professionals' subjective feelings, that is, their clinical judgment. The professionals' impression of uneasiness and frustration, induced by patients and their parents, is of major importance. CONCLUSION:The principal elements guiding the diagnosis of chronic idiopathic MSP do not come primarily from the physical examination but rather from the pain history and the health professional's subjective feelings. Our results suggest that the concept of Juvenile Fibromyalgia (JFM) does not appear to cover all situations of chronic idiopathic MSP in adolescence. A constellation of non-organic criteria enables diagnosis of the latter; these criteria should be validated to avoid medical nomadism and multiple investigations and to shorten the interval until patients receive optimal pain management. CLINICAL TRIAL REGISTRATION:clinicaltrials.gov, NCT03171792, https://clinicaltrials.gov/ct2/show/NCT03171792?term=LACHAL&cntry=FR&city=paris&rank=1.

Project description:Youth have a right to participate in research that will inform the care that they receive. Engagement with children and young people has been shown to improve rates of enrollment and retention in clinical trials as well as reduce research waste. The aim of the study is to gain practical insight on the design of trials specifically on (1) recruitment and retention preferences, (2) potential barriers to research, and (3) study design optimization. Based on this youth engagement, we will co-design two clinical trials in headaches with youth. Two recruitment strategies were used to recruit 16 youth from across Canada (aged 15-18 years) from an existing youth group, the KidsCan Young Persons' Research Advisory Group (YPRAG) and a new youth group in collaboration with Solutions for Kids in Pain (SKIP). Four virtual, semi-structured discussion groups were held between April and December 2020, which included pre-circulated materials and utilized two distinct upcoming planned trials as examples for specific methods feedback. Individual engagement evaluations were completed following the final group session using the Public and Patient Engagement Evaluation Tool. Descriptive results were shared with participants prior to publication to ensure appropriate interpretation. The discussion was centred around three themes: recruitment and retention preferences, potential barriers to participation, and study design optimization. Youth indicated that they would prefer to be contacted for a potential study directly by their physician (not over social media), that they would like to develop rapport with study staff, and that one of the barriers to participation is the time commitment. The youth also provided feedback on the design of the clinical trial including outcome measurement tools, data collection, and engagement methods. Feedback on the virtual format of the engagement events indicated that participants appreciated the ease of the online discussion and that the open-ended discussion allowed for easy exchange of ideas. They felt that despite a gender imbalance (towards females) it was an overall inclusive environment. All participants reported believing that their engagement will make a difference to the work of the research team in designing the clinical trials. Perspectives from a diverse group of youth meaningfully improved the design and conduct of two clinical trials for headaches in children. This study provides a framework for future researchers to engage youth in the co-design of clinical trials using online engagement sessions.

Project description:Not all patients with nerve injury develop neuropathic pain. The extent of nerve damage and age at the time of injury are two of the few risk factors identified to date. In addition, preclinical studies show that neuropathic pain variance is heritable. To define such factors further, we performed a large-scale gene profiling experiment which plotted global expression changes in the rat dorsal root ganglion in three peripheral neuropathic pain models. This resulted in the discovery that the potassium channel alpha subunit KCNS1, involved in neuronal excitability, is constitutively expressed in sensory neurons and markedly downregulated following nerve injury. KCNS1 was then characterized by an unbiased network analysis as a putative pain gene, a result confirmed by single nucleotide polymorphism association studies in humans. A common amino acid changing allele, the 'valine risk allele', was significantly associated with higher pain scores in five of six independent patient cohorts assayed (total of 1359 subjects). Risk allele prevalence is high, with 18-22% of the population homozygous, and an additional 50% heterozygous. At lower levels of nerve damage (lumbar back pain with disc herniation) association with greater pain outcome in homozygote patients is P = 0.003, increasing to P = 0.0001 for higher levels of nerve injury (limb amputation). The combined P-value for pain association in all six cohorts tested is 1.14 E-08. The risk profile of this marker is additive: two copies confer the most, one intermediate and none the least risk. Relative degrees of enhanced risk vary between cohorts, but for patients with lumbar back pain, they range between 2- and 3-fold. Although work still remains to define the potential role of this protein in the pathogenic process, here we present the KCNS1 allele rs734784 as one of the first prognostic indicators of chronic pain risk. Screening for this allele could help define those individuals prone to a transition to persistent pain, and thus requiring therapeutic strategies or lifestyle changes that minimize nerve injury. Microarrays were run on mRNA extracted from adult rat L4 and L5 DRGs cells after 3,7,21,40 hours after three different sciatic nerve lesions [Spared Nerve Injury (SNI); Chronic Constriction Injury (CCI); Spinal Nerve Ligation (Ch) with Sham controls (SH)].

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Cumulative effects of multiple pain sites in youth with chronic pain.

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Cumulative effects of multiple pain sites in youth with chronic pain.

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