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Journal of Neurology Jul 2023Acupuncture has been shown to reduce tension-type headache (TTH) frequency in previous studies. Nevertheless, repeated significance testing might inflate type I error.... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Acupuncture has been shown to reduce tension-type headache (TTH) frequency in previous studies. Nevertheless, repeated significance testing might inflate type I error. We aimed to verify the effectiveness and safety of acupuncture in reducing TTH frequency by meta-analysis and trial sequential analysis (TSA).
METHODS
Ovid Medline, Embase, and Cochrane Library were searched until September 29, 2022. Randomized controlled trials comparing acupuncture with sham acupuncture, no acupuncture, or other active therapies in adults with TTH were included. The primary outcome was TTH frequency. The secondary outcomes were responder rate and adverse event.
RESULTS
Fourteen studies involving 2795 participants were included. Acupuncture had more reduction than sham acupuncture in TTH frequency, both after treatment (standardized mean difference [SMD] - 0.80, 95% CI - 1.36 to - 0.24, P = 0.005) and at the follow-up period (SMD - 1.33, 95% CI - 2.18 to - 0.49, P = 0.002), while TSA showed the included sample size did not exceed required information size (RIS). Acupuncture was superior over no acupuncture after treatment (SMD - 0.52, 95% CI - 0.63 to - 0.41, P < 0.001), and cumulative sample size reached RIS. In terms of responder rate, acupuncture had a higher responder rate compared with sham acupuncture both after treatment (relative ratio [RR] 1.28, 95% CI 1.12 to 1.46, P = 0.0003) and the follow-up period (RR 1.37, 95% CI 1.19 to 1.58, P < 0.0001), but the sample size is inadequate.
CONCLUSION
Acupuncture is an efficacious and safe treatment for TTH prevention, but this conclusion might be limited by the generally very low to low quality evidence. TSA suggested that high-quality trials are needed to verify the efficacy and safety of acupuncture compared to sham acupuncture.
Topics: Adult; Humans; Tension-Type Headache; Acupuncture Therapy
PubMed: 37017736
DOI: 10.1007/s00415-023-11695-1 -
The Journal of Headache and Pain Aug 2023Headache is one of the most common neurological symptoms. Many previous studies have indicated a relationship between primary headaches and alcohol. Drinking has been... (Meta-Analysis)
Meta-Analysis
BACKGROUND
Headache is one of the most common neurological symptoms. Many previous studies have indicated a relationship between primary headaches and alcohol. Drinking has been associated with increased risk of tension-type headache (TTH) and migraine. However, recently published studies have not confirmed this relationship. The existing literature is inconclusive; however, migraine patients avoid alcohol. Therefore, the primary objective was to provide a reliable assessment of alcohol intake in people with primary headaches; the secondary objective was to identify any potential relationship between alcohol consumption and headache risk.
METHODS
This study was based on PubMed, Embase and Web of Science database searches performed on 11 July 2023. This systematic review was registered in PROSPERO (CRD42023412926). Risk of bias for the included studies was assessed using the Joanna Briggs Institute critical appraisal tools. Meta-analyses were performed using Statistica software. The Risk Ratio (RR) was adopted as the measure of the final effect. Analyses were based on a dichotomous division of the respondents into "non-drinkers" and "drinkers" for headache patients and matched non-headache groups.
RESULTS
From a total of 1892 articles, 22 were included in the meta-analysis. The majority demonstrated a moderate or high risk of bias. The first part of the meta-analysis was performed on data obtained from 19 migraine studies with 126 173 participants. The risk of migraine in alcohol drinkers is approximately 1.5 times lower than in the group of non-drinkers (RR = 0.71; 95% CI: 0.57-0.89). The second part involved 9 TTH studies with 28 715 participants. No relationship was found between TTH diagnosis and alcohol consumption (RR = 1.09; 95% CI: 0.93-1.27). Two of the included cluster-headache articles had inconclusive results.
CONCLUSIONS
Alcohol consumption and migraine are inversely correlated. The exact mechanism behind this observation may indicate that migraine leads to alcohol-avoidance, rather than alcohol having any protective role against migraine. There was no relationship between TTH and drinking. However, further studies related to primary headaches and alcohol consumption with low risk of bias are required. Additionally, patients and physicians should consider the latest medical data, in order to avoid the myths about alcohol consumption and primary headaches.
Topics: Humans; Ethanol; Headache; Migraine Disorders; Tension-Type Headache; Cluster Headache
PubMed: 37612595
DOI: 10.1186/s10194-023-01653-7 -
The Journal of Headache and Pain Apr 2023The role of inflammation and cytokines in the pathophysiology of primary headache disorders is uncertain. We performed a systematic review and meta-analysis to... (Meta-Analysis)
Meta-Analysis
BACKGROUND
The role of inflammation and cytokines in the pathophysiology of primary headache disorders is uncertain. We performed a systematic review and meta-analysis to synthesise the results of studies comparing peripheral blood cytokine levels between patients with migraine, tension-type headache, cluster headache, or new daily persistent headache (NDPH), and healthy controls; and in migraine between the ictal and interictal stages.
METHODS
We searched PubMed/Medline and Embase from inception until July 2022. We included original research studies which measured unstimulated levels of any cytokines in peripheral blood using enzyme-linked immunosorbent assay or similar assay. We assessed risk of bias using the Newcastle-Ottawa Quality Assessment Scale. We used random effects meta-analysis with inverse variance weighted average to calculate standardised mean difference (SMD), 95% confidence intervals, and heterogeneity for each comparison. This study is registered with PROSPERO (registration number CRD42023393363). No funding was received for this study.
RESULTS
Thirty-eight studies, including 1335 patients with migraine (32 studies), 302 with tension-type headache (nine studies), 42 with cluster headache (two studies), and 1225 healthy controls met inclusion criteria. Meta-analysis showed significantly higher interleukin (IL)-6 (SMD 1.07, 95% CI 0.40-1.73, p = 0.002), tumour necrosis factor (TNF)-α (SMD 0.61, 95% CI 0.14-1.09, p = 0.01), and IL-8 (SMD 1.56, 95% CI 0.03-3.09, p = 0.04), in patients with migraine compared to healthy controls, and significantly higher interleukin-1β (IL-1β) (SMD 0.34, 95% CI 0.06-0.62, p = 0.02) during the ictal phase of migraine compared to the interictal phase. Transforming growth factor (TGF)-β (SMD 0.52, 95% CI 0.18-0.86, p = 0.003) and TNF-α (SMD 0.64, 95% CI 0.33-0.96, p = 0.0001) were both higher in patients with tension-type headache than controls.
CONCLUSIONS
The higher levels of the proinflammatory cytokines IL-6, IL-8 and TNF-α in migraine compared to controls, and IL-1β during the ictal stage, suggest a role for inflammation in the pathophysiology of migraine, however prospective studies are required to confirm causality and investigate the mechanisms for the increase in cytokine levels identified. Cytokines may also have a role in tension-type headache. Due a lack of data, no conclusions can be made regarding cluster headache or NDPH.
Topics: Humans; Cytokines; Tension-Type Headache; Tumor Necrosis Factor-alpha; Cluster Headache; Interleukin-8; Migraine Disorders; Inflammation
PubMed: 37016284
DOI: 10.1186/s10194-023-01572-7 -
Heliyon Jun 2024Acupuncture may be effective in treating tension-type headache (TTH). The durability of its effects after treatment completion remains inconclusive.
BACKGROUND
Acupuncture may be effective in treating tension-type headache (TTH). The durability of its effects after treatment completion remains inconclusive.
METHODS
We searched multiple databases and references from previous reviews for randomized controlled trials (RCTs) which investigated the effectiveness of acupuncture for TTH. We assessed the methodological quality of RCTs using the Cochrane Risk of Bias 2.0 (RoB 2) tool. Primary outcome was response rate, defined as the proportion of participants who reported at least a 50% reduction in monthly headache days from baseline after completion of treatment. Secondary outcomes included headache days, headache intensity, and analgesic use. Safety outcomes were also evaluated.
RESULTS
A total of seven RCTs involving 3,221 participants with frequent episodic and chronic TTH were included. Individuals receiving acupuncture reported a significantly higher response rate versus sham acupuncture (SA) immediately and at 1-6 months after completion of treatment (<0.05). Compared with SA, post-treatment results of headache days and headache intensity appeared consistent on the whole, showing associations favoring acupuncture. However, no significant reduction in analgesic use was found post-treatment. Acupuncture showed no superiority over physical training or relaxation training in headache days and headache intensity. Moreover, no serious adverse events associated with acupuncture were reported.
CONCLUSION
Limited evidence suggested that acupuncture might provide durable post-treatment effects in the management of frequent episodic and chronic TTH for up to 6 months compared with SA,with no severe treatment-related adverse events reported.
PubMed: 38933960
DOI: 10.1016/j.heliyon.2024.e32174 -
Pain Physician Oct 2023There have been no recent meta-analysis studies on specific psychological symptoms (depression and anxiety) according to the type of primary headache disorder in... (Meta-Analysis)
Meta-Analysis
Associations Between Headache (Migraine and Tension-Type Headache) and Psychological Symptoms (Depression and Anxiety) in Pediatrics: A Systematic Review and Meta-analysis.
BACKGROUND
There have been no recent meta-analysis studies on specific psychological symptoms (depression and anxiety) according to the type of primary headache disorder in children and adolescents.
OBJECTIVES
We performed a meta-analysis of various psychodiagnostic scales. Psychological symptoms of primary headache disorders have been reported in previous studies.
STUDY DESIGN
A systematic review and meta-analysis.
METHODS
We conducted systematic reviews using the PubMed, Embase, Cochrane Library, and Scopus databases up to October 19, 2022. Ten studies were selected by applying the inclusion criteria. The psychological symptoms (depression and anxiety) of children and adolescents with migraine and tension-type headache (TTH) were compared with those of healthy controls using scale scores. All statistical analyses of the pooled data were performed using RevMan 5.3 software.
RESULTS
Psychodiagnostic tools to assess depression scored higher in patients with migraine than in healthy controls; however, most anxiety-related scores were not significantly different between the migraine and control groups. In contrast, anxiety-related scores were higher in patients with TTH than in healthy controls, but the score to measure the degree of depressive symptoms was not significantly different from the control group in patients with TTH.
LIMITATIONS
A limited number of studies for each scale were included. In addition, each scale has different sensitivities and specificities, which may have affected the results. In addition, we did not evaluate the differences in psychological symptoms according to the frequency and severity of headaches.
CONCLUSIONS
Depression is more associated with migraine; whereas, anxiety is more associated with TTH than healthy controls. Therefore, the screening and assessment of psychological symptoms should be performed in children and adolescents with primary headache disorders.
Topics: Adolescent; Humans; Child; Tension-Type Headache; Depression; Headache; Anxiety; Migraine Disorders
PubMed: 37847915
DOI: No ID Found -
Complementary Therapies in Clinical... May 2021Tension-type headache (TTH) is one of the most common primary headache diseases in the world and has a serious negative impact on the physical and mental health of... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND AND PURPOSE
Tension-type headache (TTH) is one of the most common primary headache diseases in the world and has a serious negative impact on the physical and mental health of patients. Tuina is now widely used to treat tension-type headaches. This article aims to systematically review the evidence about the effectiveness of Tuina on the effectiveness rate, pain intensity, and impact of headache in individuals with TTH.
METHODS
Eight databases for randomized controlled trials (RCTs) of Tuina were included in treatments for TTH. Cochrane Collaboration's tool was applied to evaluate the quality of the studies. Confidence in the effect estimates was determined with the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) tool. We use the software STATA 12.0 for meta-analysis and TSA software for test sequence analysis.
RESULTS
Seven studies were included with a total sample of 1228 individuals. Meta-analysis results showed that Tuina was superior to drugs for improving the effectiveness rate (RR = 1.49, 95%CI: 1.25 to 1.77, p < 0.01, low evidence). A visual analog scale (VAS) score of Tuina was significantly lower than that of drugs (WMD = -0.738, 95% CI: -1.128 to -0.349, p < 0.01, moderate evidence). The trial sequential analysis showed that the effectiveness of Tuina for TTH was accurate. Adverse events were tolerable.
CONCLUSION
Tuina has a certain effect in treating tension headache. However, due to the low level of methodological quality included in the article, this conclusion should be considered cautiously. More studies are necessary to strengthen the evidence regarding the effectiveness and safety of Tuina for subjects with TTH.
Topics: Headache; Humans; Tension-Type Headache
PubMed: 33735636
DOI: 10.1016/j.ctcp.2020.101293 -
Cephalalgia : An International Journal... Mar 2023A systematic and meta-analysis was conducted to examine the evidence of the effects of botulinum toxin A on chronic tension-type headache. (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
A systematic and meta-analysis was conducted to examine the evidence of the effects of botulinum toxin A on chronic tension-type headache.
METHODS
Cochrane, Embase, Ovid, ProQuest, PubMed, Scopus, Web-of-Science databases, and ClinicallTrials.gov registry were systematically searched for studies examining the effects of botulinum toxin A on tension-type headaches. The records were screened by two independent reviewers using pre-determined eligibility criteria. DerSimonian Liard random-effects meta-analyses were performed using the 'meta' package (5.2-0) in R (4.2.0). Risk of bias and quality of evidence were assessed using the Cochrane Collaboration's Tool RoB 2 and Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) methodology. Clinical significance was determined using pre-defined minimal clinically important differences.
RESULTS
Eleven controlled trials were included (390 botulinum toxin A, 297 controls). Botulinum toxin A was associated with significant improvements in standardized headache intensity (-0.502 standard deviations [-0.945, -0.058]), headache frequency (-2.830 days/month [-4.082, -1.578]), daily headache duration (-0.965 [-1.860, -0.069]) and the frequency of acute pain medication use (-2.200 days/month [-3.485, -0.915]) vs controls. Botulinum toxin A-associated improvements exceeded minimal clinically important differences for headache intensity, frequency, and acute pain medication use. A 79% (28%, 150%) greater response rate was observed for botulinum toxin A vs controls in improving chronic tension-type headache. Treatment of eight chronic tension-type headache patients was sufficient to elicit a therapeutic response in one patient.
CONCLUSIONS
Corroborating the current mechanistic evidence, our meta-analysis supports the utility of botulinum toxin A for managing chronic tension-type headaches. However, due to limitations in the quality of evidence, adequately-powered high-quality controlled trials examining the effects of Botulinum toxin A on chronic tension-type headache are warranted.
REGISTRATION
Protocol preregistered in PROSPERO International Prospective Register of Systematic Reviews (CRD42020178616).
Topics: Humans; Tension-Type Headache; Botulinum Toxins, Type A; Acute Pain; Headache; Headache Disorders
PubMed: 36786349
DOI: 10.1177/03331024221150231 -
Headache Jul 2022We conducted a systematic review and dose-response meta-analysis to investigate the association between body mass index (BMI) and primary headache disorder subtypes and... (Meta-Analysis)
Meta-Analysis Review
OBJECTIVE
We conducted a systematic review and dose-response meta-analysis to investigate the association between body mass index (BMI) and primary headache disorder subtypes and to clarify the shape of this relationship.
METHODS
PubMed and Scopus were searched from inception to September 2020. Observational studies reporting the risk estimates of primary headache disorders across categories of BMI were included. We restricted our systematic search to articles published in English. Meta-analyses, reviews, letters to editor, case reports/case series, and abstracts with inadequate data were excluded. We used the Joanna Briggs Institute's critical appraisal tool to assess the quality of the studies included in the meta-analyses. One author extracted data from each study by using prespecified data extraction forms.
RESULTS
In total, 41 observational studies investigating the association between BMI and different primary headache disorders with 154,044 cases and 792,500 participants were included. Among subtypes of headache disorders, the risk of migraine significantly increased in subjects who were either underweight or had obesity compared to those with normal BMI (odds ratio [OR] = 1.21, 95% confidence interval [CI]: 1.09-1.34, I = 6.2%; OR = 1.28, 95% CI: 1.15-1.43, I = 89.7%, respectively). However, there was limited evidence to support the association between BMI and the risk of other subtypes of primary headache disorders. A nonlinear association was found between BMI and migraine (p nonlinearity <0.0001), and the lowest risk was observed in BMI around 20 and increased at BMI values >29.
CONCLUSION
This meta-analysis suggests through a nonlinear association an increased risk of migraine among individuals who are either underweight or obese. These results support the recommendation that headache disorders' prevention will benefit from weight control.
Topics: Body Mass Index; Headache; Humans; Migraine Disorders; Obesity; Thinness
PubMed: 35851952
DOI: 10.1111/head.14356 -
Acta Neurologica Belgica Jun 2023Headache is a disabling disease that affects psychosocial factors. Medical students are recognized to be more susceptible to psychological stress than other.... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Headache is a disabling disease that affects psychosocial factors. Medical students are recognized to be more susceptible to psychological stress than other. Quantitative summaries of prevalence studies on this subject are limited. The aim of this study was to quantify and comprehend the variance in prevalence at the global and regional levels.
METHODS
We used a comprehensive search approach to find studies on headaches prevalence in the medical literature published between November 1990 and May 5, 2022. Database searched were PubMed, Scopus, EMBASE, and Google Scholar. Studies that reported headaches (unspecified, migraine, or tension-type headache (TTH)) in medical students were included. Subgroup analysis and meta-regression were applied to investigate heterogeneity, with the risk of bias tool employed to assess study quality. PROSPERO number CRD42022321556 was assigned to the study protocol.
RESULTS
Out of 1561 studies, 79 were included. The pooled prevalence estimates of unspecified headache, migraine, and TTH were 70.44% (95% CI: 63.32-77.57), 18.9% (95% CI: 15.7-22.0), and 39.53% (95% CI: 31.17-47.90), respectively. TTH and migraine were more prevalent in Eastern Mediterranean and American region. TTH and migraine were less prevalent in higher income countries.
CONCLUSION
Although the prevalence of headaches among medical students varies in different countries, it is higher than the general population of the same age. Higher stressors and overwork in these students may contribute to this condition. The well-being of medical students should be a priority for the relevant authorities.
Topics: Humans; Students, Medical; Headache; Tension-Type Headache; Migraine Disorders; Disabled Persons; Prevalence
PubMed: 37138039
DOI: 10.1007/s13760-023-02274-2 -
Headache Sep 2019Migraine, tension-type headache, and hypothyroidism constitute very common medical conditions. Headache is one of the most common symptoms of hypothyroidism, occurring...
BACKGROUND
Migraine, tension-type headache, and hypothyroidism constitute very common medical conditions. Headache is one of the most common symptoms of hypothyroidism, occurring in approximately one-third of the patients. To date, data about the relationship between migraine and tension-type headache and thyroid dysfunction, and in particular hypothyroidism have been contradictory, while the underlying pathophysiological basis explaining this association is still unclear.
OBJECTIVE
In this review, we investigated the association between primary headaches and hypothyroidism, with the aim of shedding light on its pathophysiological basis.
METHODS
We conducted a systematic search in the MEDLINE database using both subject headings and keywords for headache, migraine, tension-type headache, thyroid hormones, and hypothyroidism, and we also examined manually the reference lists of all articles that met the inclusion criteria. Included studies were related to headache and thyroid disease comorbidity, with emphasis on hypothyroidism (ideally demonstrated by hormonal measurements), and with the term headache including migraine, tension-type headache, and headache attributed to hypothyroidism (HAH) based on the International Classification of Headache Disorders IIIb. Quality of studies was assessed by the Newcastle-Ottawa scale.
RESULTS
Of a total of 640 identified articles, 9 studies were included. Overall, there was vast heterogeneity across the included studies concerning population, study design and outcomes. Two studies investigated the HAH, with emphasis on the clinical characteristics of headache (time of onset, localization, quality, intensity, and response to hormonal replacement treatment). Five studies investigated comorbidity between migraine and thyroid disorders, especially hypothyroidism, and in the majority of them a positive association was demonstrated. One study found that headache, and particularly migraine, may increase the risk of developing hypothyroidism. Finally, only 1 study on chronic tension-type headache found coexistence of migraine and hypoactivity of the hypothalamus-pituitary-thyroid axis. The strengths and limitations of these studies are analyzed and possible pathophysiological mechanisms are suggested.
CONCLUSIONS
The existing data are considered inadequate to answer with certainty the relationship between headaches and thyroid disorders. According to our analysis, it seems that suggestions for a possible bidirectional association between headaches and especially migraine and hypothyroidism could exist. It hence lays the foundation for further research into the aforementioned association and its pathogenesis via large prospective multicenter studies.
Topics: Humans; Hypothyroidism; Migraine Disorders; Tension-Type Headache
PubMed: 31310335
DOI: 10.1111/head.13600