Achtergrond: Pijn is een lastig te meten, subjectief fenomeen. Pijn wordt vaak gemeten met subjectieve self-reported vragenlijsten. Een andere manier om pijn vast te leggen is het objectief meten van de pijndrempel (Pressure Pain Threshold, PPT) door middel van het uitoefenen van mechanische druk met behulp van een drukalgometer. De pijndrempel is het punt waarop een persoon voor het eerst pijn opmerkt. Het is een bruikbare en betrouwbare manier om op een objectieve wijze de PPT in kaart te brengen. Normaalwaarden van pijndrempels en de invloed van diverse variabelen hierop zijn nog onbekend. Ook is nog onduidelijk of er binnen een individu verschillen kunnen zijn tussen de gevoeligheid voor pijn aan de dominante en niet-dominante zijde van het lichaam. Vraagstelling: Wat is de mate van variatie in pijndrempelwaarden op diverse locaties op het lichaam, gemeten met een drukalgometer, aan de dominante zijde ten opzichte van de niet-dominante zijde bij pijnvrije ouderen van 40 tot 85 jaar?”Methode: Bij gezonde deelnemers (zonder pijn) in de leeftijd van 40 tot 85 jaar werden pijndrempels gemeten op drie locaties rond de knie, twee locaties op de arm en één op het voorhoofd. Metingen werden op elke locatie drie keer verricht, met een tussenpose van 30 seconden. Dit werd gedaan op de dominante en niet-dominante zijde van het lichaam. Op elke locatie werd de gemiddelde pijndrempel van drie metingen berekend. Door middel van een ongepaarde t-toets werd per locatie de gemiddelde pijndrempel aan de dominante zijde vergeleken met de niet-dominante zijde. Resultaten: De steekproef bestond uit 53 deelnemers, waarvan 23 mannen (gemiddelde leeftijd 64,3 jaar ±13,3) en 30 vrouwen (gemiddelde leeftijd 55,5 jaar ±9,4), waarvan vijf linkshandige deelnemers en één linksbenige deelnemer. Gemiddelde pijndrempels waren op alle zes locaties aan de dominante zijde niet significant hoger dan aan de niet-dominante zijde (p<0,05). Conclusie: Er zijn geen significante verschillen in de hoogte van de pijndrempels aan de op dominante zijde ten opzichte van de niet-dominante zijde. Dit maakt het gebruik van pijndrempels eenvoudiger wanneer dit wordt toegepast in een klinische setting.Implicatie voor de fysiotherapie: Pijndrempelmetingen kunnen in de praktijk gebruikt worden om pijn objectief te meten. Hierbij hoeft er geen rekening gehouden te worden met de dominante of niet-dominante zijde van de arm en het been.
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Pain following burn injuries can be severe and may persist after hospital discharge. The experience of pain is influenced by multiple biological and psychosocial factors. Post-discharge pain may be related to pain experienced during hospitalization as well as anxiety associated with these pain experiences. There are also protective factors; one notable example is optimism. However, the role of optimism in burn-related pain has not yet been investigated. This study aimed to describe the extent of pain measured over 14 consecutive days post-discharge and to examine its relationship with background pain, procedural pain, pain-related anxiety, and optimism. This multi-center longitudinal cohort study was conducted in five burns centres. The results showed that 50 % of the patients had a pain score ≥ 2 on a 0 – 10 scale after discharge, which on average decreased further over the next 14 days. However, a subgroup of patients maintained elevated pain levels. Patients with higher pain scores post-discharge were more likely to have experienced higher levels of background pain and procedural pain in-hospital and they scored lower on optimism. Pain-related anxiety did not independently contribute to pain post-discharge. The results indicate that patients with high pain scores during hospital admission may need specific attention regarding pain management when they leave the hospital. Furthermore, patients may benefit from optimism-inducing interventions in the hospital and thereafter.
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Studies about clinical pain in schizophrenia are rare. Conclusions on pain sensitivity in people with schizophrenia are primarily based on experimental pain studies. This review attempts to assess clinical pain, that is, everyday pain without experimental manipulation, in people with schizophrenia. PubMed, PsycINFO, Embase.com, and Cochrane were searched with terms related to schizophrenia and pain. Methodological quality was assessed with the Mixed Methods Appraisal Tool. Fourteen studies were included. Persons with schizophrenia appear to have a diminished prevalence of pain, as well as a lower intensity of pain when compared to persons with other psychiatric diseases. When compared to healthy controls, both prevalence and intensity of pain appear to be diminished for persons with schizophrenia. However, it was found that this effect only applies to pain with an apparent medical cause, such as headache after lumbar puncture. For less severe situations, prevalence and intensity of pain appears to be comparable between people with schizophrenia and controls. Possible underlying mechanisms are discussed. Knowledge about pain in schizophrenia is important for adequate pain treatment in clinical practice. Perspective This review presents a valuable insight into clinical pain in people with schizophrenia
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A significant proportion of adolescents with chronic musculoskeletal pain (CMP) experience difficulties in physical functioning, mood and social functioning, contributing to diminished quality of life. Generalized joint hypermobility (GJH) is a risk factor for developing CMP with a striking 35-48% of patients with CMP reporting GJH. In case GJH occurs with one or more musculoskeletal manifestations such as chronic pain, trauma, disturbed proprioception and joint instability, it is referred to as generalized hypermobility spectrum disorder (G-HSD). Similar characteristics have been reported in children and adolescents with the hypermobile Ehlers-Danlos Syndrome (hEDS). In the management of CMP, a biopsychosocial approach is recommended as several studies have confirmed the impact of psychosocial factors in the development and maintenance of CMP. The fear-avoidance model (FAM) is a cognitive-behavioural framework that describes the role of pain-related fear as a determinant of CMP-related disability. Pubmed was used to identify existing relevant literature focussing on chronic musculoskeletal pain, generalized joint hypermobility, pain-related fear and disability. Relevant articles were cross-referenced to identify articles possibly missed during the primary screening. In this paper the current state of scientific evidence is presented for each individual component of the FAM in hypermobile adolescents with and without CMP. Based on this overview, the FAM is proposed explaining a possible underlying mechanism in the relations between GJH, pain-related fear and disability. It is assumed that GJH seems to make you more vulnerable for injury and experiencing more frequent musculoskeletal pain. But in addition, a vulnerability for heightened pain-related fear is proposed as an underlying mechanism explaining the relationship between GJH and disability. Further scientific confirmation of this applied FAM is warranted to further unravel the underlying mechanism. In explaining disability in individuals with G-HSD/hEDS, it is important to focus on both the physical components related to joint hypermobility, in tandem with the psychological components such as pain-related fear, catastrophizing thoughts and generalized anxiety.
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Objective To develop and internally validate a prognostic model to predict chronic pain after a new episode of acute or subacute non-specific idiopathic, non-traumatic neck pain in patients presenting to physiotherapy primary care, emphasising modifiable biomedical, psychological and social factors. Design A prospective cohort study with a 6-month follow-up between January 2020 and March 2023. Setting 30 physiotherapy primary care practices. Participants Patients with a new presentation of non-specific idiopathic, non-traumatic neck pain, with a duration lasting no longer than 12 weeks from onset. Baseline measures Candidate prognostic variables collected from participants included age and sex, neck pain symptoms, work-related factors, general factors, psychological and behavioural factors and the remaining factors: therapeutic relation and healthcare provider attitude. Outcome measures Pain intensity at 6 weeks, 3 months and 6 months on a Numeric Pain Rating Scale (NPRS) after inclusion. An NPRS score of ≥3 at each time point was used to define chronic neck pain. Results 62 (10%) of the 603 participants developed chronic neck pain. The prognostic factors in the final model were sex, pain intensity, reported pain in different body regions, headache since and before the neck pain, posture during work, employment status, illness beliefs about pain identity and recovery, treatment beliefs, distress and self-efficacy. The model demonstrated an optimism-corrected area under the curve of 0.83 and a corrected R2 of 0.24. Calibration was deemed acceptable to good, as indicated by the calibration curve. The Hosmer–Lemeshow test yielded a p-value of 0.7167, indicating a good model fit. Conclusion This model has the potential to obtain a valid prognosis for developing chronic pain after a new episode of acute and subacute non-specific idiopathic, non-traumatic neck pain. It includes mostly potentially modifiable factors for physiotherapy practice. External validation of this model is recommended.
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Introduction: Illness Perceptions (IPs) may play a role in the management of persistent low back pain. The mediation and/or moderation effect of IPs on primary outcomes in physiotherapy treatment is unknown. Methods: A multiple single-case experimental design, using a matched care physiotherapy intervention, with three phases (phases A-B-A’) was used including a 3 month follow up (phase A’). Primary outcomes: pain intensity, physical functioning and pain interference in daily life. Analyzes: linear mixed models, adjusted for fear of movement, catastrophizing, avoidance, sombreness and sleep. Results: Nine patients were included by six different primary care physiotherapists. Repeated measures on 196 data points showed that IPs Consequences, Personal control, Identity, Concern and Emotional response had a mediation effect on all three primary outcomes. The IP Personal control acted as a moderator for all primary outcomes, with clinically relevant improvements at 3 month follow up. Conclusion: Our study might indicate that some IPs have a mediating or a moderating effect on the outcome of a matched care physiotherapy treatment. Assessing Personal control at baseline, as a relevant moderator for the outcome prognosis of successful physiotherapy management of persistent low back pain, should be further eplored.
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BackgroundWorking alliance can possibly influence patients’ experiences of pain and physical functioning. The aim of this systematic review is to merge evidence from literature regarding the influence of patients’ perceived working alliance on pain and physical functioning in patients with chronic musculoskeletal pain.MethodsA systematic review in which randomized controlled trials and cohort studies were included that assessed the influence of working alliance on either pain or physical functioning in patients with chronic musculoskeletal pain. The methodological quality of the included studies were rated by means of the PEDro score and STROBE statement.ResultsThe first step of the search process provided 1469 studies. After screening, five studies were included in this review including one RCT and four cohort studies of patients with chronic musculoskeletal pain. One cohort study was rated as low methodological quality and the other studies as high methodological quality. There was a significant effect of working alliance on the outcome of pain severity, pain interference, and physical functioning in all studies. Physical functioning was measured by means of questionnaires and functional capacity tests. The effect on questionnaires was positive; the effect was conflicting on functional capacity.ConclusionWhen influencing pain with treatment, a patient’s perceived working alliance during treatment does predict pain reduction and improvement in physical functioning. It is recommended to inquire about a patient’s working alliance during treatment in patients with chronic musculoskeletal pain.
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Background: Physical therapy is regarded an effective treatment for temporomandibular disorders (TMD). Patients with TMD often report concomitant headache. There is, however, no overview of the effect of physical therapy for TMD on concomitant headache complaints. Objectives: The aim of this study is to systematically evaluate the literature on the effectiveness of physical therapy on concomitant headache pain intensity in patients with TMD. Data sources: PubMed, Cochrane and PEDro were searched. Study eligibility criteria: Randomized or controlled clinical trials studying physical therapy interventions were included. Participants: Patients with TMD and headache. Appraisal: The Cochrane risk of bias tool was used to assess risk of bias. Synthesis methods: Individual and pooled between-group effect sizes were calculated according to the standardized mean difference (SMD) and the quality of the evidence was rated using the GRADE approach. Results: and manual therapy on both orofacial region and cervical spine. There is a very low level of certainty that TMD-treatment is effective on headache pain intensity, downgraded by high risk of bias, inconsistency and imprecision. Limitations: The methodological quality of most included articles was poor, and the interventions included were very different. Conclusions: Physical therapy interventions presented small effect on reducing headache pain intensity on subjects with TMD, with low level of certainty. More studies of higher methodological quality are needed so better conclusions could be taken.
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The aim of the present study was to investigate the nature and prevalence of nonspecific somatic symptoms, pain and catastrophizing in children with Heritable Connective Tissue Disorders (HCTD), and to determine their association with disability. This observational, multicenter study included 127 children, aged 4–18 years, with Marfan syndrome (MFS) (59%), Loeys-Dietz syndrome (LDS) (8%), Ehlers-Danlos syndromes (EDS) (12%) and hypermobile Ehlers-Danlos syndrome (hEDS) (23%). The assessments included the Children's Somatization Inventory or parent proxy (CSI, PCSI), pain visual-analogue scale (VAS), SUPERKIDZ body diagram, Pain Catastrophizing Scale Child or parent proxy (PCS-C, PCS-P) and Childhood Health Assessment Questionnaire (CHAQ-30). Data from children aged ≥8 years were compared to normative data. In children ≥ 8 years (n = 90), pain was present in 59%, with a median of 4 (IQR = 3–9) pain areas. Compared to normative data, the HCTD group reported significantly higher on the CSI (p ≤ 0.001, d = 0.85), VAS pain intensity (p ≤ 0.001, d = 1.22) and CHAQ-30 (p ≤ 0.001, d = 1.16) and lower on the PCS-C (p = 0.017, d = −0.82) and PCS-P (p ≤ 0.001, d = −0.49). The intensity of nonspecific somatic symptoms and pain explained 45% of the variance in disability (r2 = 0.45 F(2,48) = 19.70, p ≤ 0.001). In children ≤ 7 years (n = 37), pain was present in 35% with a median of 5(IQR = 1–13) pain areas. The mean(SD) VAS scores for pain intensity was 1.5(2.9). Functional disability was moderately correlated to the number of pain areas (r = 0.56, p ≤ 0.001), intensity of nonspecific somatic symptoms (r = 0.63, p ≤ 0.001) and pain (r = 0.83, p ≤ 0.001). In conclusion, this study supports the need for comprehensive assessment of nonspecific somatic symptoms, pain, and disability in children with HCTD to allow tailored treatment.
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Chronic widespread pain is highly present in patients with the Ehlers-Danlos syndrome hypermobility type (EDS-HT), but up to now, evidence for generalized hyperalgesia is lacking. The aim of this study is to investigate whether pressure pain thresholds (PPTs) at both symptomatic and asymptomatic body areas differ in EDS-HT patients compared to healthy subjects. Twenty-three women with EDS-HT and 23 gender- and age-matched healthy controls participated. All subjects marked on Margolis Pain Diagram where they felt pain lasting longer than 24 h in the past 4 weeks. Then, they completed several questionnaires assessing pain cognitions, fatigue, disability, and general health status, in order to take the possible influence of these factors on PPTs into account. Patients also completed a form concerning the type of pain they experienced. Thereupon, a blinded researcher assessed PPTs at 14 body locations on the trunk and extremities. PPTs were compared for the two complete groups. In addition, PPTs of patients and controls who did not report pain in a respective zone were compared. PPTs of the patients were significantly lower compared to those of the control group, also when pain-free samples per zone were compared. The mean (SD) PPT was 2.9 (1.62) kg/cm(2) in the EDS-HT patients and 5.2 (1.88) kg/cm(2) in the controls (P < 0.001). No confounding factors responsible for the observed differences could be revealed. In half of the patient group, a predominantly neuropathic pain component was likely present. This study provides evidence for the existence of hyperalgesia even in asymptomatic areas (generalized secondary hyperalgesia). The generalized hyperalgesia may represent the involvement of a sensitized central nervous system, which inquires an adapted pain management for this patient group.
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