Abstract
In this issue of the Scandinavian Journal of Pain, Pico-Espinosa and co-workers [1] report on the role of diabetes mellitus (DM) and hyperlipidaemia (HL) as risk factors for frequent pain in the back, neck and/or shoulders/arms (BNSP). Their study was based on a large population-based cohort with a four-year follow-up. They concluded that DM and HL may play a role in the aetiology of frequent BNSP, but this role may be different in men and women.
1 Common risk factors for musculoskeletal pain and type 2 diabetes mellitus?
According to previous epidemiological studies, cardiovascular risk factors including type 2 DM and chronic pain are common and comorbid conditions that possibly share some aetiological factors [2]. Despite the general positive trend of cardiovascular risk factors in the developed countries, there has been an increased trend in the prevalence of type 2 DM and obesity in recent years. More than 8.5% of adults worldwide have been estimated to have diabetes [3]. Painful diabetic neuropathy is a well-known consequence of long-lasting diabetes in some patients. Some studies have suggested that hyperglycaemia and diabetes are related to non-neuropathic musculoskeletal pain, as well [4,5]. For example, a study from Denmark found that patients with diabetes more commonly reported pain in the shoulder and neck or low back, or pain in the arm, hand, knee and/or hip compared with the general population [5]. One large population-based study from Norway found an increased prevalence of widespread musculoskeletal pain in people with diabetes but did not find an association between blood glucose levels and musculoskeletal pain [6].
2 The obesity-epidemic followed by type 2 DM and chronic musculoskeletal pain
One of the most important reasons for the increased prevalence of type 2 DM is the obesity epidemic. In addition to DM, obesity is linked to unaffordable lipid profiles (higher LDL cholesterol and triglycerides). About half of the adults in Europe are overweight and the average prevalence of obesity is more than 10% in adults [7]. In general, obesity has been thought to be associated with musculoskeletal pain. For example, in one large population-based follow-up study obesity was related to persistence of chronic widespread pain [8]. The evidence of a systematic review indicates that obesity is a risk factor of low back pain [9]. Also, based on a meta-analysis, it is suggested that there is a dose–response relation between weight and osteoarthritis of the knee [10]. Obesity has been linked to shoulder pain in a large cross-sectional population-based study [11]. According to a clinical study, obesity and a low level of DHL cholesterol and a high level of triglycerides have been found to be associated with upper extremity pain [12].
3 Hyperlipidaemia: a risk-factor for chronic pain?
The present study by Pico-Espinosa and co-workers [1] with 10,000 middle-aged and older adults found that hyperlipidaemia in men and women and diabetes mellitus in men increased the risk of frequent BNSP. The study was questionnaire-based. A clinical examination was not conducted. Furthermore, DM and HL were not confirmed with laboratory tests. As the authors discuss, they were not able to conduct the analysis stratified or adjusted with statin use. However, the sample size was large, the followup was conducted carefully and the researchers could take several confounding factors (e.g. body mass index) into account in their analysis. The main results of the present study are in line with the results from some previous studies. The difference between men and women in the present study is interesting. However, this may be due to the low number of cases, resulting in limited statistical power. To assess the possible biological background of the potential gender difference requires further studies to confirm this finding. As stated in the present study, DM and HL may result in a small proportion of new cases of BNSP. However, it is plausible that increasing numbers of DM and HL are increasing the incidence of BNSP.
4 Reducing risk of cardiovascular risk factors will also reduce risk of musculoskeletal pain
Based on existing scientific evidence, it can be assumed that frequent musculoskeletal pain is associated with metabolic disturbances such as type 2 DM, obesity or metabolic syndrome. These cardiovascular risk factors seem to result in increased risk for musculoskeletal pain. However, there is still a gap in knowledge in understanding the causal relationship between these conditions or their possible common biological background. Despite the limitations, the present large population-based follow-up study by Pico-Espinosa and co-workers together with previous existing scientific evidence supports the view that the population strategy for preventing frequent musculoskeletal pain should include controlling cardiovascular risk factors such as type 2 DM and hyperlipidaemia.
DOI of refers to article: http://dx.doi.org/10.1016/j.sjpain.2016.11.005.
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Conflict of interest: None declared.
References
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© 2017 Scandinavian Association for the Study of Pain
Articles in the same Issue
- Scandinavian Journal of Pain
- Editorial comment
- Cardiovascular risk reduction as a population strategy for preventing pain?
- Observational study
- Diabetes mellitus and hyperlipidaemia as risk factors for frequent pain in the back, neck and/or shoulders/arms among adults in Stockholm 2006 to 2010 – Results from the Stockholm Public Health Cohort
- Editorial comment
- Exercising non-painful muscles can induce hypoalgesia in individuals with chronic pain
- Clinical pain research
- Exercise induced hypoalgesia is elicited by isometric, but not aerobic exercise in individuals with chronic whiplash associated disorders
- Editorial comment
- Education of nurses and medical doctors is a sine qua non for improving pain management of hospitalized patients, but not enough
- Observational study
- Acute pain in the emergency department: Effect of an educational intervention
- Editorial comment
- Home training in sensorimotor discrimination reduces pain in complex regional pain syndrome (CRPS)
- Original experimental
- Pain reduction due to novel sensory-motor training in Complex Regional Pain Syndrome I – A pilot study
- Editorial comment
- How can pain management be improved in hospitalized patients?
- Original experimental
- Pain and pain management in hospitalized patients before and after an intervention
- Editorial comment
- Is musculoskeletal pain associated with work engagement?
- Clinical pain research
- Relationship of musculoskeletal pain and well-being at work – Does pain matter?
- Editorial comment
- Preoperative quantitative sensory testing (QST) predicting postoperative pain: Image or mirage?
- Systematic review
- Are preoperative experimental pain assessments correlated with clinical pain outcomes after surgery? A systematic review
- Editorial comment
- A possible biomarker of low back pain: 18F-FDeoxyGlucose uptake in PETscan and CT of the spinal cord
- Observational study
- Detection of nociceptive-related metabolic activity in the spinal cord of low back pain patients using 18F-FDG PET/CT
- Editorial comment
- Patients’ subjective acute pain rating scales (VAS, NRS) are fine; more elaborate evaluations needed for chronic pain, especially in the elderly and demented patients
- Clinical pain research
- How do medical students use and understand pain rating scales?
- Editorial comment
- Opioids and the gut; not only constipation and laxatives
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- Editorial comment
- Relief of phantom limb pain using mirror therapy: A bit more optimism from retrospective analysis of two studies
- Clinical pain research
- Trajectory of phantom limb pain relief using mirror therapy: Retrospective analysis of two studies
- Editorial comment
- Qualitative pain research emphasizes that patients need true information and physicians and nurses need more knowledge of complex regional pain syndrome (CRPS)
- Clinical pain research
- Adolescents’ experience of complex persistent pain
- Editorial comment
- New knowledge reduces risk of damage to spinal cord from spinal haematoma after epidural- or spinal-analgesia and from spinal cord stimulator leads
- Review
- Neuraxial blocks and spinal haematoma: Review of 166 case reports published 1994–2015. Part 1: Demographics and risk-factors
- Review
- Neuraxial blocks and spinal haematoma: Review of 166 cases published 1994 – 2015. Part 2: diagnosis, treatment, and outcome
- Editorial comment
- CNS–mechanisms contribute to chronification of pain
- Topical review
- A neurobiologist’s attempt to understand persistent pain
- Editorial Comment
- The triumvirate of co-morbid chronic pain, depression, and cognitive impairment: Attacking this “chicken-and-egg” in novel ways
- Observational study
- Pain and major depressive disorder: Associations with cognitive impairment as measured by the THINC-integrated tool (THINC-it)
Articles in the same Issue
- Scandinavian Journal of Pain
- Editorial comment
- Cardiovascular risk reduction as a population strategy for preventing pain?
- Observational study
- Diabetes mellitus and hyperlipidaemia as risk factors for frequent pain in the back, neck and/or shoulders/arms among adults in Stockholm 2006 to 2010 – Results from the Stockholm Public Health Cohort
- Editorial comment
- Exercising non-painful muscles can induce hypoalgesia in individuals with chronic pain
- Clinical pain research
- Exercise induced hypoalgesia is elicited by isometric, but not aerobic exercise in individuals with chronic whiplash associated disorders
- Editorial comment
- Education of nurses and medical doctors is a sine qua non for improving pain management of hospitalized patients, but not enough
- Observational study
- Acute pain in the emergency department: Effect of an educational intervention
- Editorial comment
- Home training in sensorimotor discrimination reduces pain in complex regional pain syndrome (CRPS)
- Original experimental
- Pain reduction due to novel sensory-motor training in Complex Regional Pain Syndrome I – A pilot study
- Editorial comment
- How can pain management be improved in hospitalized patients?
- Original experimental
- Pain and pain management in hospitalized patients before and after an intervention
- Editorial comment
- Is musculoskeletal pain associated with work engagement?
- Clinical pain research
- Relationship of musculoskeletal pain and well-being at work – Does pain matter?
- Editorial comment
- Preoperative quantitative sensory testing (QST) predicting postoperative pain: Image or mirage?
- Systematic review
- Are preoperative experimental pain assessments correlated with clinical pain outcomes after surgery? A systematic review
- Editorial comment
- A possible biomarker of low back pain: 18F-FDeoxyGlucose uptake in PETscan and CT of the spinal cord
- Observational study
- Detection of nociceptive-related metabolic activity in the spinal cord of low back pain patients using 18F-FDG PET/CT
- Editorial comment
- Patients’ subjective acute pain rating scales (VAS, NRS) are fine; more elaborate evaluations needed for chronic pain, especially in the elderly and demented patients
- Clinical pain research
- How do medical students use and understand pain rating scales?
- Editorial comment
- Opioids and the gut; not only constipation and laxatives
- Observational study
- Healthcare resource use and costs of opioid-induced constipation among non-cancer and cancer patients on opioid therapy: A nationwide register-based cohort study in Denmark
- Editorial comment
- Relief of phantom limb pain using mirror therapy: A bit more optimism from retrospective analysis of two studies
- Clinical pain research
- Trajectory of phantom limb pain relief using mirror therapy: Retrospective analysis of two studies
- Editorial comment
- Qualitative pain research emphasizes that patients need true information and physicians and nurses need more knowledge of complex regional pain syndrome (CRPS)
- Clinical pain research
- Adolescents’ experience of complex persistent pain
- Editorial comment
- New knowledge reduces risk of damage to spinal cord from spinal haematoma after epidural- or spinal-analgesia and from spinal cord stimulator leads
- Review
- Neuraxial blocks and spinal haematoma: Review of 166 case reports published 1994–2015. Part 1: Demographics and risk-factors
- Review
- Neuraxial blocks and spinal haematoma: Review of 166 cases published 1994 – 2015. Part 2: diagnosis, treatment, and outcome
- Editorial comment
- CNS–mechanisms contribute to chronification of pain
- Topical review
- A neurobiologist’s attempt to understand persistent pain
- Editorial Comment
- The triumvirate of co-morbid chronic pain, depression, and cognitive impairment: Attacking this “chicken-and-egg” in novel ways
- Observational study
- Pain and major depressive disorder: Associations with cognitive impairment as measured by the THINC-integrated tool (THINC-it)