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March 14, 2017; 88 (11) Article

Chronobiology differs between men and women with cluster headache, clinical phenotype does not

Nunu Lund, Mads Barloese, Anja Petersen, Bryan Haddock, Rigmor Jensen
First published February 15, 2017, DOI: https://doi.org/10.1212/WNL.0000000000003715
Nunu Lund
From the Danish Headache Center, Department of Neurology (N.L., A.P., R.J.), and Department of Clinical Physiology, Nuclear Medicine and PET (M.B., B.H.), Rigshospitalet-Glostrup, University of Copenhagen, Denmark.
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Mads Barloese
From the Danish Headache Center, Department of Neurology (N.L., A.P., R.J.), and Department of Clinical Physiology, Nuclear Medicine and PET (M.B., B.H.), Rigshospitalet-Glostrup, University of Copenhagen, Denmark.
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Anja Petersen
From the Danish Headache Center, Department of Neurology (N.L., A.P., R.J.), and Department of Clinical Physiology, Nuclear Medicine and PET (M.B., B.H.), Rigshospitalet-Glostrup, University of Copenhagen, Denmark.
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Bryan Haddock
From the Danish Headache Center, Department of Neurology (N.L., A.P., R.J.), and Department of Clinical Physiology, Nuclear Medicine and PET (M.B., B.H.), Rigshospitalet-Glostrup, University of Copenhagen, Denmark.
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Rigmor Jensen
From the Danish Headache Center, Department of Neurology (N.L., A.P., R.J.), and Department of Clinical Physiology, Nuclear Medicine and PET (M.B., B.H.), Rigshospitalet-Glostrup, University of Copenhagen, Denmark.
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Chronobiology differs between men and women with cluster headache, clinical phenotype does not
Nunu Lund, Mads Barloese, Anja Petersen, Bryan Haddock, Rigmor Jensen
Neurology Mar 2017, 88 (11) 1069-1076; DOI: 10.1212/WNL.0000000000003715

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Abstract

Objective: To describe differences between the sexes in the phenotype of cluster headache (CH) in a large, well-characterized clinical CH population.

Methods: Patients from the Danish CH survey aged 18–65 years, diagnosed with CH according to International Classification of Headache Disorders, second edition, completed questionnaires and structured interviews.

Results: A total of 351 patients with CH participated, with a male:female ratio of 2:1. The diurnal variation of attacks showed moments of peak prominence in men’s attack cycle to be advanced by 1 hour compared to women’s, despite no difference in self-reported bedtime or chronotype (p = 0.31). The onset of CH decreased with increasing age for both sexes. Diagnostic delay was numerically longer for men vs women (6.56 vs 5.50 years, p = 0.21); however, more women had previously been misdiagnosed (61.1% vs 45.5%, p < 0.01) and received the correct diagnosis at a tertiary headache center (38.8% vs 20.9%, p < 0.001). Only minor sex differences in clinical characteristics were found but chronic CH was more prevalent in women compared to men (44.0% vs 31.9%, p < 0.05).

Conclusions: Despite a similar clinical phenotype, diurnal attack cycle is advanced by 1 hour in men with CH compared to women. Rhythmicity is a defining characteristic of CH and these findings suggest differences in the hypothalamus’ influence on attack occurrence between the sexes. In addition, women were more often misdiagnosed and diagnosis in the primary or secondary sector more often failed. Furthermore, women had chronic CH more frequently than men. A long diagnostic delay and frequent misdiagnosis emphasize the need for increased awareness of CH in both sexes.

GLOSSARY

CCH=
chronic cluster headache;
CH=
cluster headache;
ECH=
episodic cluster headache;
PSQI=
Pittsburgh Sleep Quality Index;
TTH=
tension-type headache

Footnotes

  • Go to Neurology.org for full disclosures. Funding information and disclosures deemed relevant by the authors, if any, are provided at the end of the article.

  • Received July 11, 2016.
  • Accepted in final form November 21, 2016.
  • © 2017 American Academy of Neurology
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