ORIGINAL RESEARCH article

Front. Public Health, 24 March 2023

Sec. Public Mental Health

Volume 11 - 2023 | https://doi.org/10.3389/fpubh.2023.1140682

Associations of migraines with suicide ideation or attempts: A meta-analysis

  • 1. Department of Pathology, Chongqing University FuLing Hospital, Chongqing, China

  • 2. Department of Neurology, Chongqing University FuLing Hospital, Chongqing, China

Abstract

Objective:

Whether migraine is associated with a higher risk of suicide ideation and/or attempts remains controversial. Therefore, we aimed to evaluate these potential associations in migraine patients by performing a meta-analysis of previously published data.

Methods:

We searched for studies published up to 31 June 2022 that compared the risk of suicide ideation/attempt in migraineurs and non-migraineurs in PubMed, EMBASE, and Web of Science databases. Sixteen studies fulfilled the eligibility criteria. We applied Random-effects models to calculate pooled adjusted odds ratios (AORs) and 95% confidence intervals (CIs) in patients with migraine.

Results:

Migraine patients were at a significantly increased risk of suicide ideation (AOR 1.33, 95% CI 1.15–1.54) and suicide attempts (AOR 1.70, 95% CI 1.42–2.03). The increase in risk may be greater in adults (>19 years) than in younger individuals.

Conclusion:

The available evidence indicates a significant association of migraines with suicide ideation and attempts. Future work should confirm and extend these findings, as well as explore whether they are affected by ethnicity or geography.

Background

Migraines, the second most common primary headache, are recurrent disabling headaches associated with neurologic symptoms, including severe throbbing head pain, with or without visual disturbances (). According to the Global Burden of Disease Study, migraine is the third leading cause of disability in people under 50 years, and it is the most common neurological disorder, with an estimated global prevalence ranging from 11 to 23% (, ). Sufferers of migraine often have a lower health-related quality of life than non-migraineurs, as well as influence work productivity and in social and family relationships (). Migraines are known to be comorbid with other neurological and psychiatric disorders. Of these, about one-third of migraineurs have fibromyalgia (). Migraine also overlaps with epilepsy in terms of visual and sensory disturbances, pain and altered consciousness (). And,young women with a history of migraine with aura are associated with acute ischemic stroke (). Further, migraines increase the risk of depression and post-traumatic stress disorder (). Therefore, anticipatory identification of possible co-morbidities accompanying migraine is important, which contributes to primary and secondary prevention of co-morbidities and reduces the associated disease burden.

Suicide ideation (thoughts of engaging in behavior intended to end one’s life) and suicide attempts (potentially self-injurious behavior in which there is at least some intent to die) are strongly predictive of suicide deaths which accounted for 1.4% of all deaths (, ). Globally, lifetime prevalence rates are ~9.2% for suicide ideation and 2.7% for suicide attempts in the general population, which can lead to injury, hospitalization, and loss of freedom, and which place a financial burden of billions of dollars on societies (). Some studies support that migraineurs are at increased risk of suicide ideation () and suicide attempts (, ). However, other work showed that migraine was not associated with suicide ideation () or suicide attempts (, , , ). The latest meta-analysis indicated a high prevalence of suicide ideation and attempts in migraine patients but the association between them was not specified (). A previous meta-analysis found that patients with migraine had a higher risk of suicide ideation (), but more recent studies emerged (, , ) and reached an opposite conclusion (, ).

Given these divergent results, we conducted a literature review and meta-analysis to gain a more complete understanding of the potential link of migraines with suicide ideation and attempts.

Methods

This meta-analysis was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) statement () (Supplementary Table 1). The meta-analysis has been registered on the INPLASY website under the registration number INPLASY202330019 (Supplementary file 1).

Study search and selection strategy

We searched PubMed, EMBASE, and Web of Science databases using the keywords “migraine or headache” and “suicide or suicides” and included articles published until 31 June 2022 (Supplementary file 2). Search results were screened for potentially relevant studies by title and abstract, followed by full-text review and selection. Studies were included if they fulfilled the following requirements: (a) they were observational studies, including cohort, case–control, or cross-sectional studies, evaluating associations of migraines with suicide ideation or attempts; (b) they reported adjusted odds ratios (AORs) with 95% confidence intervals (CIs) in the migraine cohort, and compared the results with a non-migraineur population, and (c) they were published in English. If population in two studies overlapped, only the large study was included. Exclusion criteria during the abstract review included: (a) articles that were meeting abstracts, case reports, discussions, editorials, reviews, letters, or commentaries; or (b) articles analyzing migraine in pregnant women.

Data extraction

Data were independently extracted from the selected studies by two investigators (Wei HJ and Li Y). If a discrepancy was encountered, a third author (Ren JW) reviewed the article and an agreement was reached. The following data were extracted from all articles: authors, year of publication, country of origin, study design, total sample size, criteria used to assess suicide ideation or attempts, criteria for migraine diagnosis, stratification by migraine subtypes (with or without aura), and potential confounders in the adjusted analysis.

Statistical analysis

We used Stata version 12.0 (StataCorp, College Station, TX, United States) statistical software to generate summary statistics and pooled AORs using a random model. In studies that evaluated AORs for migraine stratified by subtypes, the lower AORs were used for the summary analysis and this conservative approach may have contributed to underestimating the association as calculated in the previous meta-analysis (). Summary and pooled AORs were represented as point estimates and 95% CIs on a forest plot. Heterogeneity in the included studies was assessed using the Q test and quantified using I2. I2 values below 25% were considered as homogeneity; 25% to <50%, low heterogeneity; 50% to <75%, moderate heterogeneity; and at least 75%, substantial heterogeneity (). Egger’s and/or Begg’s tests were used to evaluate publication bias, and funnel plots were performed to visually assess publication bias of included studies (). Sensitivity analyses were used to assess the overall robustness of the included studies. Quality and risk of bias were assessed for each study using the Newcastle-Ottawa Scale (NOS) or a modified NOS ().

Results

Characteristics of the studies

A total of 538 potentially eligible articles were identified after searching the three databases and removing duplicates. After eliminating 351 articles based on the title and abstract review, the remaining 47 were read in full and 16 were ultimately included in the meta-analysis (Figure 1). The details of the included study are in Table 1 and Table 2.

Figure 1

Table 1

Author (year)Study designSample sizeAge (years)Criteria used to assess suicidal ideationCriteria used to assess migraineStratification by migraine subtypeUnadjusted OR (95% CI)Adjusted OR (95% CI)Adjustment variables
Berhane (2018)Cross-sectional1,06035.7 ± 12.1During that period, did you ever think that it would be better if you were deadICHD-II criteriaNo2.91 (2.06–4.12)1.49 (0.93–2.39)Age, sex, education, BMI categories, past year alcohol consumption, and lifetime depression
Campbell (2015)Cross-sectional8,84116–85Serious thoughts about committing suicideSelf-reported by the respondent based on the WMH-CIDI chronic conditions moduleNo2.55 (2.02–3.19)1.49 (1.12–2.00)Socio-demographic factors, mental health and a number of other pain conditions (i.e., arthritis, chronic migraines, chronic back or neck problems)
Kim (2014)Cross-sectional238Mean 39.1Defined using the SSI-Beck score, >8 for adults, >13 for college students, and > 15 for high school studentsRevised ICHD-II criteriaNo5.09 (1.17–22.10)1.51 (0.31–7.50)Age, sex, BDI and BAI
Fuller-Thomson (2013)Cross-sectional5,78815–19Ask “have you ever seriously considered committing suicide or taking your own life?”Self-reported physician diagnosed migraine headacheNoNA1.25 (0.64–2.45)Gender, school attendance, race, living arrangement, lack of food, lack of money, smoking, alcohol dependency, self-perceived health status, activities
Wang (2009)Cross-sectional3,96313–15Adolescent Depression Inventory (Item17)Structured questionnaire that uses IHS criteria (2004)Yes2.9 (2.3–3.6)MA: 1.79 (1.07–2.99); MO: 1.04 (0.77–1.40)Age, gender, depression, living arrangements
Ratcliffe (2008)Cross-sectional36,984>15Asked if they had ever seriously thought about committing suicide or taking their own livesSelf-reported physician diagnosed migraine headacheNoNA1.35 (1.04–1.75)Sex, age, marital status, education, comorbidity (≥mental disorders), other chronic pain disorders (arthritis, back problems, and migraine)
Wang (2007)Cross-sectional121Mena 13.8Mini-International Neuropsychiatric Interview-Kid for children and adolescents suicidality moduleA structured questionnaire that uses IHS criteria (2006)Yes4.3 (1.2–15.5)MA: 7.8 (1.4–44.6); MO: 2.1 (0.5–8.5)Age, gender, major depression, anxiety disorders
Breslau (1992)Cross-sectional1,00721–30Ask “Have you ever felt so low you thought about committing suicide?”A structured questionnaire that uses IHS criteria (1988)YesNAMA: 2.4 (1.1–5.3); MO: 1.7 (0.8–3.4)Coexisting mania, dysthymia, anxiety disorders, substance use disorders

Description of studies about suicidal ideation and migraine included in the meta-analysis.

OR, Odds Ratio; CI, Confidence Interval; SSI, Scale for Suicidal Ideation; BMI, Body Mass Index; BDI, Beck Depression Inventory; BAI, Beck Anxiety Inventory; SA, status migraine; RA, regular migraine; MA, migraine with aura,; MO, migraine without aura; ICHD, The international classification of headache disorders; IHS, The International Headache Society; WMH-CIDI, World Mental Health Survey Initiative version of the Composite International Diagnostic Interview; ICD, The international classification disease.

Table 2

Author (year)CountryStudy designSample sizeAge (years)Criteria used to assess suicidal attemptsCriteria used to assess migraineStratification by migraine subtypeUnadjusted OR (95% CI)Adjusted OR (95% CI)Adjustment variables
Fuller-Thomson (2019)CanadaCross-sectional21,774>18Attempted suicide or tried to take (their) own lifeSelf-reported physician diagnosed migraine headacheYesNA1.77 (1.44–2.18)Demographics, socio-economic status, three adverse childhood experiences, history of substance abuse, history of mental illness, and pain
Harnod (2018)TaiwanCross-sectional175,307>20ICD-9-CM codes E950-E959ICD-9-CM code 346 except 346.9 or ICD-9-CM code 346.9, and without code 346.90 or 346.91YesSA: 1.82 (1.15–2.90); RA: 0.35 (0.91–2.02)SA: 1.81 (1.14–2.89); RA: 1.34 (0.90–2.00)Age, sex, monthly income, urbanization level, occupation, and comorbidities
Berhane (2018)AmericaCross-sectional1,06035.7 ± 12.1Did you make a suicide attemptICHD-II criteriaNo2.91 (2.06–4.12)1.49 (0.93–2.39)Age, sex, education, BMI categories, past year alcohol consumption, and lifetime depression
Calati (2017)FranceCohort study1965>65Diagnostic and Statistical Manual of Mental DisordersInternational Headache Society (IHS)NoNA1.92 (1.17–3.15)Gender, living alone, tobacco and alcohol consumption, depressive, manic/hypomanic and anxiety disorders
Campbell (2015)AustralianCross-sectional8,84116–85Adopted from the WMH-CIDI without modificationSelf-reported by the respondent based on the WMH-CIDI chronic conditions moduleNo2.65 (1.84–3.79)1.31 (0.82–2.08)Socio-demographic factors, mental health and a number of other pain conditions (i.e., arthritis, chronic migraines, chronic back or neck problems)
Breslau (2012)AmericaCohort study1,18640.5 ± 8.6Did you attempt suicidefirst and second editions of the ICHDNo7.21(3.21–16.2)4.43(1.93–10.2)Sex, major depression, anxiety, baseline alcohol or drug use disorder
Ratcliffe (2008)CanadaCross-sectional36,984≥15Asked if they had attempted suicide or tried to take their own livesSelf-reported physician diagnosed migraine headacheNoNA2.05 (1.21–3.45)Sex, age, marital status, education, comorbidity (3 or more mental disorders), and other chronic pain disorders (arthritis, back problems, and migraine)
Breslau (1991)AmericaCross-sectional1,00721–30Diagnostic Interview ScheduleA structured questionnaire that uses IHS criteria (1988)YesNAMA: 2.99 (1.35–6.61); MO: 1.59 (0.63–4.01)Sex, major depression, affective disorders, anxiety disorders, substance use disorders

Description of studies about suicidal attempts and migraine included in the meta-analysis.

OR, Odds Ratio; CI, Confidence Interval; SSI, Scale for Suicidal Ideation; BMI, Body Mass Index; BDI, Beck Depression Inventory; BAI, Beck Anxiety Inventory; SA, status migraine, RA, regular migraine; MA, migraine with aura, MO, migraine without aura; ICHD, The international classification of headache disorders; IHS, The International Headache Society; WMH-CIDI, World Mental Health Survey Initiative version of the Composite International Diagnostic Interview; ICD, The international classification disease.

Overall AOR for suicide ideation in migraineurs

Eight cross-sectional studies evaluating suicide ideation in patients with migraine, which comprised a total of 58,002 participants, were included in the meta-analysis (Table 1). The unadjusted OR for suicide ideation in migraineurs ranged from 2.55 (95% CI 2.02–3.19) in Australia to 5.09 (95% CI 1.17–22.10) in South Korea, while the AOR varied from 1.25 (95% CI 0.64–2.45) in Canada to 1.49 (95% CI 1.12–2.00) in Australia. According to migraine subtypes, we observed that the risk of suicide ideation was higher in patients suffering from migraine with aura than in those with migraine without aura. The AOR ranged from 1.79 (95% CI 1.07–2.99) to 7.8 (95% CI 1.44–4.6) in migraine with aura, and from 1.04 (95% CI 0.77–1.40) to 2.1 (95% CI 0.5–8.5) in migraine without aura. In the meta-analysis, we used the pooled AOR of migraine without aura to calculate the overall pooled AOR. Random-effects meta-analysis of pooled data showed that patients with migraine were at higher risk of suicide ideation (AOR 1.33, 95% CI 1.15–1.54). Our analysis indicated homogeneity among the studies (I2 = 0%, p = 0.742; Figure 2A).

Figure 2

Overall AOR for suicide attempts in migraineurs

Eight studies analyzing suicide attempts in migraine, including six cross-sectional studies and two cohort studies involving 248,124 participants, were included in the meta-analysis. The unadjusted OR for suicide attempts in migraineurs ranged from 1.35 (95% CI 0.91–2.02) in Taiwan to 7.21 (95% CI 3.21–16.2) in the United States, while the AOR ranged from 1.31 (95% CI 0.82–2.08) in Australia to 4.43 (95% CI 1.93–10.2) in the United States. Random-effect meta-analysis showed that patients with migraine were at higher risk of suicide attempts (AOR 1.70, 95% CI 1.42–2.03). Our analysis showed the homogeneity of the included studies (I2 = 20.8%, p = 0.264; Figure 2B).

Age subgroup analysis in migraine with suicide ideation

We conducted a subgroup analysis in migraine with suicide ideation to address potential differences between adolescents (no more than 19 years) and adults (over 19 years of age). In the subgroup analysis, the AOR in migraine without aura was used to calculate the overall pooled AOR. The pooled AOR in adolescents was 1.10 (95% CI 0.84–1.44, I-squared = 0.0%, p = 0.584), indicating no significant association between migraine and suicide ideation (Figure 3). In adults, the pooled AOR was 1.55 (95% CI 1.05–2.27, I2 = 0.0%, p = 0.956), confirming that adults with migraines were at higher risk of suicide ideation (Figure 3).

Figure 3

Sensitivity analysis

To test the robustness of our findings, we performed a sensitivity analysis by omitting individual studies one at a time. We discovered that removing each study sequentially had no effect on the results of primary overall analyses (Supplementary Figure 1).

Publication bias

Visual inspection of the associated Begg’s funnel plot showed evidence of a moderate publication bias (Figure 4). However, Begg’s tests showed p-value was 0.902 and 0.373 in the risk analysis of suicide ideation and suicide attempts, respectively. Egger’s test showed that the p values are 0.108 and 0.619, respectively. Our study suggesting no significant risk of publication bias.

Figure 4

Quality assessment

Each study was given a NOS quality score (). Quality scores for each study ranged from 5/7 to 7/7, representing a quality assessment between “good” and “fair” quality scores (Supplementary Tables 2, 3).

Discussion

As far as we know, our meta-analysis examines the association between migraine and suicide attempts. A previous meta-analysis indicated that migraineurs are at higher risk of suicide ideation (). Our meta-analysis, which included three new studies and excluded one study concerning that previous work, confirmed the association between migraine and suicide ideation (AOR 1.33, 95% CI 1.15–1.54). Similarly, our results revealed a significant association between migraine and suicide attempts (AOR 1.70, 95% CI 1.48–1.97). Depression, anxiety, sleep disorders, post-traumatic stress disorder, and bipolar spectrum disorder are usual comorbidities of migraine (), and they have shown a strong association with increased risk of suicide ideation or attempts (38–42). This was further supported by our conclusions, which confirmed that migraineurs were at higher risk of suicide ideation/attempts.

The mechanisms behind our findings can be explained in the following ways. First, there may be an association between migraine/suicide ideation/suicide attempts and serotonin levels, and abnormalities and deficiencies in serotonin transporters, receptors, and metabolites are associated with migraine and suicide ideation/attempts (43). Second, there may be common neurobiological and neuroanatomical mechanisms underlying migraine and suicidal behavior, and studies have shown that changes in gray matter volume in the dorsolateral prefrontal cortex are independently associated with the occurrence of migraine and suicidal behavior (44). Third, dysfunction of the hypothalamic–pituitary–adrenal axis may be associated with migraine and suicidal behavior (45). Fourth, concomitant psychiatric co-morbidities in migraineurs, such as depression and anxiety, also increase the risk of suicide (46). Fifth, migraine attacks limit patients’ daily activities, which may also be an important factor contributing to suicide. However, more research is needed in the future to explore the possible mechanisms underlying the association between migraine and suicide behavior, as these may be key factors in preventing suicide and improving the quality of life of migraineurs.

In the age subgroup analysis, although the risk of migraine and suicidal ideation in adolescents younger than 19 years was not statistically significant. We can preliminarily observe a trend toward higher risk of suicidal ideation in adult migraineurs than in adolescent migraineurs, which is consistent with previous observational findings that children and adolescents under 15 years of age present the lowest global suicide rate, which steadily increases over 70 years of age (47). In addition, the lack of increased risk of suicidal ideation in migraineurs no older than 19 years may also be related to the small sample size of migraineurs younger than 19 years included in the study. Therefore, further research is needed to examine the relationship between migraine and suicidal ideation/attempt and to explore the mechanisms behind them, especially in adolescents.

Our study presents several limitations. First, the number of available studies on adolescents was small. Second, most of the publications in the meta-analysis were cross-sectional, and therefore more prospective cohort studies are urgently needed. Third, although we performed subgroup analysis and showed stable results. Our research will still be affected by some untreated confounding factors. Fourth, although Begg’s and Egger’s tests showed no significant publication bias, potential publication bias could not be completely ruled out. Finally, our results of the present meta-analysis should be confirmed and extended in larger studies considering potential ethnic and geographic differences.

Conclusion

The present meta-analysis identified a significant association between migraine and suicide ideation and attempts, although potential ethnic and geographic differences were not evaluated. The available evidence suggests that psychological interventions should be acknowledged as a fundamental component of migraine patient care.

Publisher’s note

All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher.

Statements

Data availability statement

The original contributions presented in the study are included in the article/Supplementary material, further inquiries can be directed to the corresponding author.

Author contributions

HW and JR: conceptualization. HW, YL, HL, and JR: methodology, formal analysis and investigation. HW: writing–original draft preparation. JR: writing–review and editing and supervision. All authors contributed to the article and approved the submitted version.

Conflict of interest

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Supplementary material

The Supplementary material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fpubh.2023.1140682/full#supplementary-material.

    Abbreviations

  • AOR

    adjusted odds ratios

  • CIs

    confidence intervals

  • PRISMA

    Preferred Reporting Items for Systematic Review and Meta-Analyses.

References

Summary

Keywords

migraine, suicide ideation, suicide attempt, meta-analysis, association

Citation

Wei H, Li Y, Lei H and Ren J (2023) Associations of migraines with suicide ideation or attempts: A meta-analysis. Front. Public Health 11:1140682. doi: 10.3389/fpubh.2023.1140682

Received

09 January 2023

Accepted

13 March 2023

Published

24 March 2023

Volume

11 - 2023

Edited by

Seyed Aria Nejadghaderi, Tabriz University of Medical Sciences, Iran

Reviewed by

Sina Azadnajafabad, Tehran University of Medical Sciences, Iran; Moein Zangiabadian, Kerman University of Medical Sciences, Iran

Updates

Copyright

*Correspondence: Junwei Ren,

This article was submitted to Public Mental Health, a section of the journal Frontiers in Public Health

Disclaimer

All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.

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