Increased risk of chronic fatigue syndrome in patients with migraine: A retrospective cohort study.
OBJECTIVE
The common concurrence of migraine and chronic fatigue syndrome (CFS) has been reported but whether migraine poses a higher risk of CFS remains unknown. In this retrospective case-control study, we examined the association between the 2 disorders by using a nationwide, population-based database in Taiwan.


METHODS
The data were retrieved and analyzed from the National Health Insurance Research Database (NHIRD) of Taiwan; 6902 newly diagnosed migraine cases from 2006-2010 were identified in a subset of the NHIRD, and 27,608 migraine-free individuals were randomly selected as the comparison cohort. The multivariate Cox proportional hazards regression model was used to investigate the risk of CFS in migraineurs after adjustment for demographic characteristics and comorbidities.


RESULTS
After adjustment for the covariates, the risk of CFS was 1.5-fold higher in the migraine cohort than in the comparison cohort (52.72 vs. 28.85 per 10,000 person-years). Intriguingly, the risk was most prominent in the oldest group (≥ 65 years), with a 2.11-fold increased risk (95% confidence interval 1.31-3.41) of CFS. In addition, the adjusted cumulative incidence of CFS in the follow-up years was higher in the migraine group (log-rank test, P < .0001), and CFS incidence appeared to increase with the frequency of migraine diagnoses.


CONCLUSIONS
The current study demonstrated an increased risk of CFS in migraineurs. Proposed mechanisms in previous studies such as mitochondrial dysfunction and central sensitization may underlie the shared pathophysiology of these seemingly distinct but potentially overlapping disorders.
Department of Neurology, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan; Division of Clinical Neurology, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK; College of Medicine, Fu-Jen Catholic University, Taipei, Taiwan.
Chi-ieong
CI
Lau
Management Office for Health Data, China Medical University Hospital, Taichung, Taiwan; College of Medicine, China Medical University, Taichung, Taiwan.
Che-Chen
CC
Lin
Department of Neurology, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan; College of Medicine, Taipei Medical University, Taipei, Taiwan.
Wei-Hung
WH
Chen
Department of Neurology, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan; College of Medicine, Taipei Medical University, Taipei, Taiwan; College of Medicine, National Taiwan University, Taipei, Taiwan.
Han-Cheng
HC
Wang
Graduate Institute of Clinical Medical Science and School of Medicine, College of Medicine, China Medical University, Taichung, Taiwan; Department of Nuclear Medicine and PET Center, China Medical University Hospital, Taichung, Taiwan. Electronic address: d10040@mail.cmuh.org.tw.
Chia-Hung
CH
Kao
D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D015897:Comorbidity; D015673:Fatigue Syndrome, Chronic / Q000453:epidemiology*; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D008881:Migraine Disorders / Q000453:epidemiology*; D016016:Proportional Hazards Models; D012189:Retrospective Studies; D012307:Risk Factors; D013624:Taiwan / Q000453:epidemiology
Chronic fatigue syndrome (CFS); Migraine; Population-based cohort study