Musculoskeletal Fatigue Research Articles

Metformin and fibromyalgia pathophysiology: current insights and promising future therapeutic strategies.

Fibromyalgia (FM) is a complex, chronic pain syndrome characterized by widespread musculoskeletal pain, fatigue, and cognitive disturbances. Despite its prevalence, the pathophysiology of FM remains poorly understood, with current treatments often providing limited relief. Recent studies have suggested that metformin, a widely used antidiabetic drug, may have potential therapeutic benefits for chronic pain conditions, including FM. This review aims to provide current insights into the role of metformin in FM pathophysiology, focusing on its neurotransmitter-modulating and anti-inflammatory effects. Metformin has been shown to mitigate neuroinflammation, protect neural tissues, and modulate key neurotransmitters involved in pain and mood regulation. These effects are particularly evident in animal models, where metformin has been observed to reduce pain sensitivity, improve mood-related behaviors, and decrease levels of pro-inflammatory cytokines like interleukin 1-beta (IL-1β). Additionally, the ability of metformin to influence serotonin, norepinephrine, and glutamate levels suggests a potential mechanism for its analgesic and mood-stabilizing effects. However, the current evidence is largely preclinical, and further research is needed to confirm these findings in human studies. This review aims to encourage researchers to explore the association between metformin and FM more deeply, with the hope of uncovering new therapeutic strategies that could offer relief to FM patients.

Perceived and endocrine acute and chronic stress indicators in fibromyalgia syndrome

Fibromyalgia syndrome (FMS) is a chronic disorder characterized by widespread musculoskeletal pain, fatigue and tenderness and closely associated with high levels of stress. FMS is therefore often considered a stress-related disease. A comparative study was conducted with 99 individuals diagnosed with FMS and a control group of 50 pain-free individuals. Stress indicators were classified into three categories: perceived stress assessed using the Perceived Stress Scale, and daily average salivary cortisol and hair cortisol concentrations as indicators of acute and chronic stress levels related to the hypothalamic-pituitary-adrenal axis. Analysis of variance and covariance were used to identify group differences and the influence of covariates age, sex, and body mass index. Correlational analyses further elucidated the relationship between stress indicators and clinical symptoms. Participants with FMS reported significantly higher perceived stress levels than controls (p < .001, ηp2 = 0.3), which were positively correlated with symptom burden (r = .41, p < .001). In contrast, there were no significant differences in the endocrinological stress indicators salivary and hair cortisol between the groups (p > .05), nor were these indicators associated with clinical symptoms. The study highlights the central role of perceived stress in FMS, whereas endocrinological indicators did not differentiate FMS from controls. This finding calls for a nuanced approach to clinical assessment and therapeutic interventions tailored to patients with FMS, emphasizing the management of perceived stressors.

Decreased levels of vitamin D in Post-Corona Virus-19 Disease syndrome (PCS) patients compared to a control group

Background & AimsVitamin D deficiency is defined by most experts as a level of less than 20 ng/ml. Studies have shown a relationship between musculoskeletal pain, muscle weakness, headache, and fatigue with low vitamin D level. The term Post-Corona Virus-19 Disease syndrome (PCS) describes new, returning or ongoing symptoms more than 12 weeks after Corona Virus Disease -19 (COVID-19) infection which cannot be explained by any other disorders or illnesses. The most prominent symptoms in PCS are fatigue, headache, and attention disorders. These similarities in PCS and vitamin D deficiency leads to the hypothesis of an association. The aim of this study was to find possible differences in vitamin D levels between PCS patients and a control group without PCS. MethodsWe measured vitamin D levels from April 2021 to December 2022 in 75 (2021) and 73 (2022) subjects (PCS) and compared these values with data from 2019 to 2022 in a non-PCS control group (non-PCS). ResultsWe found significantly lower (p<0,05) vitamin D levels in the PCS cohort (2021: 17,04±8,0 ng/ml; 2022: 17,6±6,6 ng/ml) compared to all years of the non-PCS group (2019: 23,7±14,7 ng/ml; 2020:22,3±13,7 ng/ml; 2021: 22,4±12,3 ng/ml; 2022: 22,6±11,0 ng/ml). There were no significant differences in vitamin D levels within the different years of the non-PCS group and when comparing the two PCS groups. ConclusionThe results of the study recorded for the first-time decreased vitamin D values in a PCS cohort compared to a control group. This raises the question of whether vitamin D deficiency influences PCS symptoms or whether they are merely the consequences of the limitations of PCS.

Depression and the risk of fibromyalgia syndrome: a two-sample Mendelian randomization study.

Fibromyalgia (FM) is a common illness with a wide range of symptoms, mainly manifested by unexplained chronic systemic musculoskeletal pain, sleep disorders and fatigue, sometimes accompanied by cognitive impairment, psychiatric symptoms and autonomic dysfunction. Previous studies have indicated a correlation between depression and the risk of FM; however, it remains uncertain whether this association reflects a causal relationship. We evaluated the etiological association between the genetically predicted depression and the risk of developing FM by conducting a two-sample Mendelian Randomization (MR) study. The data on single nucleotide polymorphisms (SNPs) related to depression were obtained from the UK Biobank (UKB) and the Psychiatric Genomics Consortium (PGC) of White British European ancestry, and the data for FM were from the 5th release of the FinnGen study. We adopted the Inverse Variance Weighted (IVW) approach as the principal standard. In order to detect the existence of horizontal pleiotropy and heterogeneity, we adopted the MR-Egger approach as the sensitivity analysis. In our MR analysis, 42 depression-related variants were identified as valid instrumental variables (IVs). The IVW approach's results manifest that there is no etiologic causality between genetically predicted depression and the risk of FM (odds ratio [OR]: 1.673, 95% confidence interval [CI]: 0.852-3.287, P = 0.135). The study did not find any significant heterogeneities or horizontal pleiotropies (P > 0.05). Our results suggest that there is no significant genetic evidence linking depression to an increased risk of FM. However, further research is necessary to investigate the potential relationship and underlying mechanisms between depression and the risk of FM.

Transcutaneous electrical nerve stimulation for fibromyalgia-like syndrome in patients with Long-COVID: a pilot randomized clinical trial

This study investigated the effect of Transcutaneous Electrical Nerve Stimulation (TENS) for fibromyalgia-like symptoms including chronic widespread musculoskeletal pain, fatigue, and/or gait impairment in twenty-five individuals with long-COVID. Participants were randomized to a high dose (intervention group, IG) or low dose (placebo group, PG) TENS device. Both groups received daily 3–5 h of TENS therapy for 4-weeks. The Brief Pain Inventory assessed functional interference from pain (BPI-I), and pain severity (BPI-S). The global fatigue index (GFI) assessed functional interference from fatigue. Wearable technology measured gait parameters during three 30-feet consecutive walking tasks. At 4-weeks, the IG exhibited a greater decrease in BPI-I compared to the PG (mean difference = 2.61, p = 0.008), and improved in gait parameters including stride time (4-8%, test condition dependent), cadence (4-10%, depending on condition), and double-support phase (12% in dual-task) when compared to baseline. A sub-group meeting the 2010 American College of Rheumatology Fibromyalgia diagnostic criteria undergoing high-dose TENS showed GFI improvement at 4-weeks from baseline (mean change = 6.08, p = 0.005). Daily TENS therapy showed potential in reducing functional interference from pain, fatigue, and gait alterations in long-COVID individuals. The study’s limited power could affect the confirmation of certain observations. Extending the intervention period may improve treatment effectiveness.

Evaluation of reserpine-induced fibromyalgia in mice: A comparative behavioral, neurochemical, and histological assessment of two doses

Fibromyalgia (FM) is a chronic pain disorder characterised by widespread musculoskeletal pain, fatigue, and cognitive disturbances. Due to its complex and poorly understood pathophysiology, reliable animal models are essential for research. Reserpine is commonly used to induce FM in animals, effectively replicating key symptoms such as widespread pain, hypersensitivity, and mood disturbances. However, the varying doses used in studies and the often unclear rationale for dose selection have led to a lack of standardisation for this model. In this study, we investigated the effects of commonly used reserpine doses (0.25 and 0.5mg/kg) to induce FM in mice. Following three consecutive days of subcutaneous reserpine injections, we conducted detailed behavioural assessments and microscopic examinations of tissue changes. We also compared the effects of the two reserpine doses on serotonin, norepinephrine, glutamate, interleukin (IL)-1β, and tumour necrosis factor (TNF)-α levels in the brain and spinal cord. The behavioural assessment demonstrated that both doses of reserpine had nearly the same effect relatively early after administration. Histological examination revealed neurotoxic effects of reserpine, particularly in the hippocampus and thalamus, which was more obvious at day 11 with the 0.5mg/kg dose. Furthermore, this dose significantly altered all neurotransmitter levels compared with the control group. While the effect of the 0.25mg/kg dose on neurotransmitter levels was limited, it altered the IL-1β and TNF-α levels in the brain and spinal cord. Our findings indicate that injecting reserpine at 0.25 or 0.5mg/kg for three consecutive days is effective in inducing FM-like pain in mice, characterised by mechanical and thermal hypersensitivity, along with associated depression and motor deficits. However, the 0.5mg/kg dose is optimal for inducing persistent neurochemical alterations and histopathological changes, lasting up to 10 days following the initial injection.

The effect of posture regulation training on musculoskeletal disorders, fatigue level and job performance in intensive care nurses

BackgroundIntensive care units (ICUs) are one of the high-risk working areas in terms of musculoskeletal disability and ergonomic risks including the environment and posture factors. Correct posture technique is often ignored by nurses working in these units. This study was conducted to determine the effect of posture regulation training on work-related musculoskeletal disorders, fatigue level and job performance in nurses working in ICUs.MethodsThis quasi-experimental study with one-group pretest-posttest design included 64 intensive care nurses. The nurses received posture regulation training in three different sessions. The post-test was administered four months after the posture regulation training.ResultsThe nurses reported to frequently have aches, pains and discomfort in the neck, upper back and lumbar regions. After the posture regulation training, their level of pain, ache and discomfort in the neck, right and left shoulder, upper back, lower back and right/left foot areas decreased significantly (p < 0.05). The posture regulation training reduced the levels of behavior/severity and affect, which are sub-dimensions of fatigue, and increased the level of contribution to work, which is a sub-dimension of job performance (p < 0.05).ConclusionThe posture regulation training decreased the level of symptoms in the neck, shoulder, upper back, lower back and foot regions of intensive care nurses and partially improved their fatigue level and job performance. Therefore, posture regulation training should be added to in-service training programs and permanent measures should be taken for ergonomic risks in ICUs.

Association between Drug Use and Perception of Mental Health in Women Diagnosed with Fibromyalgia: An Observational Study.

Fibromyalgia (FM) is a chronic syndrome characterized by widespread musculoskeletal pain, fatigue, sleep disturbances, and mental health issues. It affects approximately 1.78% of the general population; an estimated 4:1 ratio between women and men is observed. It significantly impacts quality of life and carries both clinical and social stigma. This study aims to evaluate the relationship between drug use and mental health in female patients with fibromyalgia. This study is prospective, observational, and cross-sectional. A questionnaire was administered to 544 subjects, achieving a representative sample size from a population of 800,000 subjects by using an algorithm for proportion estimation with a known sampling frame. The selection was non-random, making the sampling non-probabilistic. Logistic regression models were applied to assess the effect of drug use on perception of mental health; presence of symptoms such as comprehension and memory problems, insomnia, depression, and anxiety; and severity of cognitive symptoms and non-restorative sleep. To quantify the impact, odds ratios and confidence intervals have been observed. The findings indicate the non-recommended use of medications and reveal the ineffectiveness and adverse effects of drug interactions on mental health. The use of benzodiazepines and sedative-hypnotics is significantly associated with a negative perception of mental health. Benzodiazepines do not improve symptoms or significantly reduce their severity. SSRI antidepressants do not enhance mental health perception; however, when used exclusively, they are effective in reducing the severity, but not the prevalence, of cognitive symptoms. The results highlight the complexity of pharmacological management in FM and raise concerns about the inappropriate use of ineffective or counterproductive drug interactions affecting patients' mental health. They underscore the need for multidisciplinary and personalized strategies that include close and careful monitoring, as well as the simultaneous use of non-pharmacological treatments that have demonstrated evidence in improving quality of life without negatively affecting mental health, such as patient education, psychological therapy, physiotherapy, and mindfulness.

Disruptive compensatory mechanisms in fibromyalgia syndrome and their association with pharmacological agents.

Fibromyalgia syndrome (FMS) is a chronic disorder characterized commonly by widespread musculoskeletal pain and fatigue, predominantly affecting women, with its complexity often leading to underdiagnosis and complicating treatment effectiveness. Transcranial magnetic stimulation (TMS) metrics are potential markers to optimize FMS treatments; however, evidence is limited. Our study aimed to explore the relationship between cortical excitability and inhibition, assessed through TMS markers, and clinical characteristics in patients with FMS. This presented cross-sectional study employed baseline data from a clinical trial with 108 FMS patients, mostly female (88.8%), and mean age of 47.3 years old (SD = 12.06). Our analysis showed that decreased short-intracortical inhibition (SICI) was associated with gabapentinoids use, nicotine history, and increased fatigue levels, suggesting its connection with compensatory mechanisms for non-painful FMS features. Increased motor intracortical facilitation (ICF) was linked with greater pain severity and shorter FMS duration, implying its relationship with a reorganization of sensorimotor pathways due to chronic pain. Additionally, higher resting motor threshold (rMT) was associated with less effective pain modulation (lower conditioned pain modulation [CPM]), indicating a disruption of pain compensatory mechanism. Given the role of SICI in indexing homeostatic brain mechanisms and its association with fatigue, a hallmark characteristic of FMS-induced behavioral changes, these results suggest that FMS likely has a deleterious effect on brain inhibitory function, thus providing a potential novel insight for FMS mechanisms. In addition, it seems that this compensatory mechanism's disruption is enhanced by pharmacological agents such as gabapentioids and nicotine.

Effectiveness of Transcranial Direct Current Stimulation (tDCS) during a Virtual Reality Task in Women with Fibromyalgia-A Randomized Clinical Study.

Fibromyalgia (FM) is a chronic condition characterized by widespread musculoskeletal pain, fatigue, and impaired motor performance. This study aimed to investigate the effects of transcranial direct current stimulation (tDCS) during virtual reality (VR) tasks on the motor performance of women with FM. Participants were divided into two groups: Group A received active tDCS for 10 days followed by sham tDCS for 10 days, while Group B received the opposite sequence. Both groups performed VR tasks using MoveHero software (v. 2.4) during the tDCS sessions. Motor performance was assessed by the number of hits (movement with correct timing to reach the targets) and absolute (accuracy measure) and variable (precision measure) errors during VR tasks. Participants were 21 women, aged 30-50 years, and diagnosed with FM. Group A, which received active tDCS first, presented significant improvements in motor performance (number of hits and absolute and variable errors). The benefits of active tDCS persisted into the sham phase, suggesting a lasting neuroplastic effect. tDCS during VR tasks significantly improved motor performance in women with FM, particularly in complex, extensive movements. These findings indicate that tDCS enhances neuroplasticity, leading to sustained motor improvements, making it a promising therapeutic tool in FM rehabilitation.

Pediatric Long COVID Subphenotypes: An EHR-based study from the RECOVER program.

Pediatric Long COVID has been associated with a wide variety of symptoms, conditions, and organ systems, but distinct clinical presentations, or subphenotypes, are still being elucidated. In this exploratory analysis, we identified a cohort of pediatric (age <21) patients with evidence of Long COVID and no pre-existing complex chronic conditions using electronic health record data from 38 institutions and used an unsupervised machine learning-based approach to identify subphenotypes. Our method, an extension of the Phe2Vec algorithm, uses tens of thousands of clinical concepts from multiple domains to represent patients' clinical histories to then identify groups of patients with similar presentations. The results indicate that cardiorespiratory presentations are most common (present in 54% of patients) followed by subphenotypes marked (in decreasing order of frequency) by musculoskeletal pain, neuropsychiatric conditions, gastrointestinal symptoms, headache, and fatigue.

Variability in musculoskeletal fatigue responses associated with repeated exposure to an occupational overhead drilling task completed on successive days

Emerging research suggests that muscular and kinematic responses to overhead work display a high degree of variability in fatigue-related muscular and kinematics changes, both between and within individuals when evaluated across separate days. This study examined whether electromyographic (EMG), kinematic, and kinetic responses to an overhead drilling task performed until volitional fatigue were comparable to those of a repeated identical exposure of the task completed 1 week later. Surface EMG and intramuscular EMG, sampled from 7 shoulder muscles, and right upper limb kinematics and kinetics were analyzed from 15 male and 14 female participants. No significant day-to-day changes in EMG mean power frequency (MPF) were observed, though serratus anterior displayed significantly less fatigue-related increase in EMG root-mean-squared (RMS) signal amplitude on day 2. Unfatigued upper kinematics on day 2 featured an increase in thoracohumeral elevation, elbow flexion, and decrease in wrist ulnar deviation compared to unfatigued state on day 1. Fatigue-related changes in shoulder joint flexion moment that were present on day 1 were reduced on day 2, suggesting that a more efficient overhead work strategy was learned and preserved across successive days. Day-to-day changes in upper limb joint angle variability, quantified by median absolute deviation (MdAD), were joint dependent. Despite yielding a variable fatigue-related kinetic strategy on both days, kinematic and kinetic fatigue-related changes on a second day of completing an overhead drilling task suggested a potential kinematic learning effect.

Ehlers-Danlos Syndrome and Fibromyalgia: Beyond Pain and Fatigue

Introduction: Ehlers-Danlos syndrome (EDS) is a genetic disorder that affects the connective tissue. Hypermobile subtype (hEDS), which is the most common, is characterized by joint hyperlaxity, diffuse generalized pain, and chronic fatigue. Meanwhile, fibromyalgia is a pain regulation disorder of chronic, widespread musculoskeletal pain, fatigue, cognitive disturbance, psychiatric and multiple somatic symptoms. Objective: To examine the similarities and differences between hEDS, fibromyalgia and highlight the importance of their proper diagnosis and treatment. Methods: A systematic search of PubMed and Scopus databases was performed for all English - Spanish language studies published between 2013 and May 2023. Two reviewers independently selected studies, extracted data and applied quality criteria. Study quality was assessed using PRISMA and a synthesis of the best evidence was obtained. Results: A total of 20 studies met the criteria and were therefore analyzed. Conclusion: Diagnosing EDS and fibromyalgia can be challenging in medical practice as their clinical manifestations can overlap, and they may even coexist in the same patient.

Muscular tension in ear surgeons during cochlear implantations: does a new microscope improve musculoskeletal complaints?

Musculoskeletal complaints and fatigue are commonly described symptoms in daily work of ear nose and throat surgeons using a microscope. Long ear surgical procedures are associated with prolonged microscope use, which can lead to unconsciously tense and uncomfortable body posture. The digital microscope RoboticScope® allows visualization of surgical site through a Head-Mounted Display, independent from camera head and is therefore much easier on the back, as the sitting position can be adjusted flexibly. Aim of the prospective study was to investigate to what extent the use of a RoboticScope® changes the tension of neck and shoulder muscles of the surgeons in comparison to a conventional tripod microscope. For this purpose, the electric activity of neck and shoulder muscles of surgeons was recorded using surface electromyography during cochlear implantations. Electrical potentials were derived via electrodes on neck and shoulder muscles. The basic tension of those muscles was measured in relaxed position before and after surgery. During microscope use the tension was continued to be measured. A questionnaire recorded parameters such as level of difficulty of operation as well as patient data. Results from 58 operations, 33 of which were performed using a conventional microscope and 25 using a Head-Mounted Display, show a significant reduction in muscular tension during surgery by 40% (p < 0.001) in experienced ear surgeons when using a RoboticScope®, regardless of the surgeon. Our results are in line with the relevance of preventive measures to avoid acute and chronic work-related illnesses/symptoms described in literature.

Effect of a Novel Adaptive Handle Design on the Ergonomic Performance of Periodontal Curettes in Dental Hygienists with and without Musculoskeletal Disorders: A Pilot Clinical Study.

(1) Background: Musculoskeletal disorders (MSDs), discomfort, fatigue, pain, and other acute and chronic work-related injuries are common among dental clinicians. Hand instruments constitute a primary risk factor for these conditions. The overall goal of this study was to compare in dental hygienists with healthy hands, and in those with MSDs, the effect of three different handle designs on instrumentation-related muscle work, comfort, fatigue, and quality of tactile feedback. (2) Methods: Clinicians tested three periodontal curettes: one with a novel adaptive silicone handle, another with a rigid resin handle, and the third with a rigid silicone handle. Ten hygienists-five with MSDs and five without-each scaled three typodonts using the three different curettes. Statistical analysis was performed using a General Linear Model (GLIM) and Tukey's post hoc test, and a significance level of p < 0.05 was implemented. (3) Results: On average, mean comfort and fatigue across all instruments were significantly worse in testers with MSDs, who also expended significantly more work to complete the same task. In all testers, a novel adaptive handle design was associated with significantly reduced total muscle work and post-instrumentation fatigue, as well as better comfort than conventional rigid handle designs. (4) Conclusions: An adaptive curette handle design demonstrated significantly better ergonomic outcomes than conventional rigid curette handle designs. Hygienists with MSDs expend significantly more muscle work during dental instrumentation.

Risk factors for long COVID syndrome in postmenopausal women with previously reported diagnosis of COVID-19

PurposeLong COVID-19 syndrome occurs in 10–20 % of people after a confirmed/probable SARS-COV-2 infection; new symptoms begin within three months of COVID-19 diagnosis and last > 8 weeks. Little is known about risk factors for long COVID, particularly in older people who are at greater risk of COVID complications. MethodsData are from Women’s Health Initiative (WHI) postmenopausal women who completed COVID surveys that included questions on whether they had ever been diagnosed with COVID and length and nature of symptoms. Long COVID was classified using standard consensus criteria. Using WHI demographic and health data collected at study enrollment (1993–98) through the present day, machine learning identified the top 20 risk factors for long COVID. These variables were tested in logistic regression models. ResultsOf n = 37,280 survey respondents, 1237 (mean age = 83 years) reported a positive COVID-19 test and 425 (30 %) reported long COVID. Symptoms included an array of neurological, cardio-pulmonary, musculoskeletal, and general fatigue, and malaise symptoms. Long COVID risk factors included weight loss, physical and mobility limitations, and specific heath conditions (e.g., history of heart valve procedure, rheumatoid arthritis). ConclusionsKnowledge of risk factors for long COVID may be the first step in understanding the etiology of this complex disease.

A comprehensive study of adverse effects of chemotherapy on female breast cancer patients in NORI Cancer Hospital, Islamabad in a developing country.

Breast cancer is one of the top three malignancies worldwide. While radiotherapy, hormone replacement therapys, and chemotherapy are treatments, chemotherapy causes adverse effects that hinder daily life activities. To assess the prevalence, severity, and association of symptomatic toxicities in female breast cancer patients affecting various organ systems post systemic chemotherapy (adjuvant and neoadjuvant), and their impact on daily activities. Additionally, to determine the severity of adverse effects in specific age groups and their association with family history and disease stage. An observational study was conducted on 253 female breast cancer patients receiving chemotherapy at NORI Cancer Hospital from May to October 2023. Data collection tools included the NCI-PRO-CTCAE standardized questionnaire and patient medical records. Analysis was performed using descriptive statistics, T-tests, and Chi-square tests. Among the 253 patients, 41.4% were aged 41-50. Significant weight changes (p = 0.034) were observed with more than three chemotherapy cycles. Notable associations included increased chemotherapy cycles with gastrointestinal (mouth/throat sores p = 0.031, vomiting p = 0.021), respiratory (cough p = 0.04), cardiovascular (arm/leg swelling p = 0.007, palpitations p = 0.052), integumentary (hair loss p = 0.000, skin dryness p = 0.054), and musculoskeletal (fatigue p = 0.002) adverse effects. Positive family history and the 18-30 age group also showed significant associations with adverse effect severity. Disease stage significantly influenced the nervous system (stage 2 p = 0.007, stage 3 p = 0.01). The severity of adverse effects varies among age groups, depending on disease stage, genetics, and treatment duration. These patient-reported outcomes highlight the need for better management strategies considering prognostic factors and treatment adverse effects.

Beyond Pills: Synergizing Pharmacological and Physical Activity Interventions in Fibromyalgia Treatment. A review

Introduction and purpose Fibromyalgia (FM) is a chronic condition characterized by widespread musculoskeletal pain, fatigue, sleep disturbances, and cognitive impairment, affecting 2-4% of the global population, with a higher prevalence among women and those of lower socioeconomic status. The pathogenesis of FM is complex and multifactorial, involving central sensitization and neurochemical dysregulation. This review highlights the latest advancements in pharmacological and behavioral therapies for fibromyalgia. State of knowledge Management of fibromyalgia currently is based on a combination of medication use and non-pharmacological approaches, primarily based on physical activity and cognitive-behavioral therapy. This review explores advancements in FM treatments, focusing on novel pharmacological agents such as vortioxetine, eslicarbazepine acetate, and tapentadol, which target specific neurochemical pathways to alleviate symptoms. Vortioxetine offers new mechanisms of action with potential cognitive benefits, while eslicarbazepine acetate and tapentadol provide alternative approaches for pain modulation and central sensitization. Additionally, non-pharmacological therapies, including high-intensity interval training (HIIT) and virtual reality (VR) therapy, demonstrate promise in enhancing physical fitness, reducing pain, and improving quality of life for FM patients. Summary Overall, the integration of these novel therapies into comprehensive, individualized treatment plans can optimize outcomes and enhance the quality of life for individuals with FM. Ongoing research and personalized medicine approaches are essential to further refine and validate these emerging treatments.

Fibromyalgia and Skin Disorders: A Systematic Review.

Background: Fibromyalgia is a complex multifaceted syndrome primarily characterised by chronic musculoskeletal pain, fatigue, and functional symptoms. Although FM is known to be associated with several comorbidities, the aim of this systematic review was to comprehensively examine the available evidence regarding the relationship between FM and dermatological manifestations. Methods: We followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, and MedLine and Web of Science (WOS) databases were searched up to June 2023. After removing duplicate records, 21 articles were deemed eligible for inclusion in the qualitative synthesis. Results: Overall, the included studies revealed an increased frequency of FM among patients with cutaneous diseases, including psoriasis, chronic urticaria, contact allergy, acneiform disorders, hidradenitis suppurativa, and vitiligo. Additionally, the presence of comorbid FM may intensify skin conditions, which has a negative impact on quality of life and vice versa. Conclusions: Although the causal mechanisms of FM are still far from being understood, this systematic review suggests a relationship between FM and skin disorders. However, further research is encouraged in this area.

Work-related musculoskeletal disorders, fatigue and stress among gas station workers in China: a cross-sectional study

IntroductionWork-related musculoskeletal disorders (WMSDs) are disorders of the musculoskeletal system that have the highest prevalence among workers worldwide. Workers in gas stations usually work in poor ergonomic working conditions, including...