In this study, an effect of FKBP5 variants on antidepressant drug response was confirmed in an independent cohort of depressed patients; however, with an odds ratio of 1.8 the effect size was smaller than that described earlier.
Introduction ICHD-3 criteria for chronic migraine (CM) include a mixture of migraine and tension-type-like headaches and do not account for patients who have a high frequency of migraine but no other headaches. Materials and methods Patients from the Danish Headache Center and their relatives with ICHD-3 defined CM were compared with patients with high frequency episodic migraine (HFEM). Danish registries were used to compare the socioeconomic impact in these two groups. A Russian student population was used to determine the generalizability of the number of patients fulfilling CM and the proposed diagnostic criteria for CM. Results There was no difference in the demographic profile between the two groups in the Danish cohort. The number of lifelong or annual attacks ( p > 0.3), comorbid diseases, or self-reported effect of triptans ( p = 1) did not differ. HFEM patients purchased more triptans than CM patients ( p = 0.01). CM patients received more early pension ( p = 0.00135) but did not differ from HFEM patients with regard to sickness benefit ( p = 0.207), cash assistance ( p = 0.139), or rehabilitation benefit ( p = 1). Discussion Patients with HFEM are comparable to CM patients with regard to chronicity and disability. We therefore suggest classifying CM as ≥ 8 migraine days per month (proposed CM), disregarding the need for ≥ 15 headache days per month. The proposed diagnostic criteria for CM approximately doubled the number of patients with CM in both the Danish and the Russian materials. Extending the definition of CM to include patients with HFEM will ensure that patients with significant disease burden and unmet treatment needs are identified and provided appropriate access to the range of treatment options and resources available to those with CM. Conclusion Patients with migraine on eight or more days but not 15 days with headache a month are as disabled as patients with ICHD-3 defined CM. They should be included in revised diagnostic criteria for chronic migraine.
Background In our previous study of workers, blood donors and medical students, students stood out with a higher 1-year prevalence of migraine (28%) and tension-type headache (TTH) (74%). General factors associated with headache were common for all groups except low physical activity. The hypothesis of this study was therefore that a number of psychosocial factors relating to the personal sphere would better explain the high prevalence of migraine and TTH in students. Methods The study population consisted of 1042 students (719 females, 323 males, mean age 20.6, range 17-40). Headache diagnoses and associated factors were identified by direct professional semi-structured interview. We also interviewed about the following psychosocial factors: dissatisfaction with study, dissatisfaction with family life, dissatisfaction for personal reasons, bad financial situation, overwork, stress, not enough sleep, insomnia, depressed mood, anxiety, irritability, tendency towards conflicts and not being married. We report psychosocial factors associated with headache according to diagnosis and sex using univariate and multivariate logistic regression analyses. Results Several factors were significantly associated with migraine and TTH in the univariate analysis. In the multivariate analysis, two psychosocial factors were statistically significantly associated with migraine in all students: irritability (OR 2.2, 95% CI 1.4-3.6) and overwork (OR 2.2, 95% CI 1.4-3.5). Insomnia (2.7, 95% CI 1.1-6.9) and depressed mood (OR 2.1, 95% CI 1.1-4.2) were associated with migraine only in females. Two psychosocial factors were associated with TTH: dissatisfaction with study in males (OR 2.0, 95% CI 1.0-3.8) and depressed mood in females (OR 1.8, 95% CI 1.0-3.5). Conclusion Psychosocial factors from the personal sphere showed significant association with migraine and TTH in students. Such factors should therefore be major targets for preventive efforts to reduce the prevalence of primary headache disorders in students.
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