Evidence map›Paper›PMID 26418536›Full record

ArticlePloS one2015

The Prevalence and Characteristics of Primary Headache and Dream-Enacting Behaviour in Japanese Patients with Narcolepsy or Idiopathic Hypersomnia: A Multi-Centre Cross-Sectional Study.

Keisuke Suzuki, Masayuki Miyamoto, Tomoyuki Miyamoto, Yuichi Inoue, Kentaro Matsui, Shingo Nishida, Kenichi Hayashida, Akira Usui, Yoichiro Ueki, Masaki Nakamura and 5 more

Abstract readMulticenter Study
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Migraine and sleep disorders: a systematic review.The journal of headache and pain · 2020
    Pooled it
  2. Review
  3. Sleep and Headache Disorders: What a Clinician Needs to Know.Current neurology and neuroscience reports · 2026
    Review
  4. Article
  5. The Lehigh Valley Health Network Narcolepsy Cohort: clinical and polysomnographic analysis of 304 cases.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2025
    Article
  6. Article
  7. Diagnostic challenges and burden of idiopathic hypersomnia: a systematic literature review.Sleep advances : a journal of the Sleep Research Society · 2024
    Article
  8. The Influence of Sleep Disturbance on Chronic Pain.Current pain and headache reports · 2022
    Review
  9. Migraine and Sleep-An Unexplained Association?International journal of molecular sciences · 2021
    Review
  10. Pathophysiological Bases of Comorbidity in Migraine.Frontiers in human neuroscience · 2021
    Review
  11. Article
  12. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

15 authors.

Keisuke SuzukiDepartment of Neurology, Dokkyo Medical University, Tochigi, Japan.
Masayuki MiyamotoSchool of Nursing, Dokkyo Medical University, Tochigi, Japan.
Tomoyuki MiyamotoDepartment of Neurology, Dokkyo Medical University Koshigaya Hospital, Saitama, Japan.
Yuichi InoueYoyogi Sleep Disorder Centre, Tokyo, Japan.
Kentaro MatsuiYoyogi Sleep Disorder Centre, Tokyo, Japan.
Shingo NishidaYoyogi Sleep Disorder Centre, Tokyo, Japan.
Kenichi HayashidaSleep & Stress Clinic, Tokyo, Japan.
Akira UsuiYoyogi Sleep Disorder Centre, Tokyo, Japan.
Yoichiro UekiSleep & Stress Clinic, Tokyo, Japan.
Masaki NakamuraYoyogi Sleep Disorder Centre, Tokyo, Japan.
Momoyo MurataKokubunji Sakura Clinic, Tochigi, Japan.
Ayaka NumaoDepartment of Neurology, Dokkyo Medical University, Tochigi, Japan.
Yuji WatanabeDepartment of Neurology, Dokkyo Medical University, Tochigi, Japan.
Shiho SuzukiDepartment of Neurology, Dokkyo Medical University, Tochigi, Japan.
Koichi HirataDepartment of Neurology, Dokkyo Medical University, Tochigi, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBecause the prevalence and characteristics of primary headache have yet to be thoroughly studied in patients with hypersomnia disorders, including narcolepsy and idiopathic hypersomnia, we examined these parameters in the Japanese population.

methodsIn a multicentre cross-sectional survey, among 576 consecutive outpatients with sleep disorders, 68 narcolepsy patients and 35 idiopathic hypersomnia patients were included. Additionally, 61 healthy control subjects participated. Semi-structured headache questionnaires were administered to all participants.

resultsThe patients with narcolepsy (52.9%) and idiopathic hypersomnia (77.1%) more frequently experienced headache than the healthy controls (24.6%; p<0.0001). The prevalence rates were 23.5%, 41.2% and 4.9% for migraine (p<0.0001) and 16.2%, 23.5% and 14.8% (p = 0.58) for tension-type headache among the narcolepsy patients, the idiopathic hypersomnia patients and the control subjects, respectively. Those who experienced migraine more frequently experienced excessive daytime sleepiness, defined as an Epworth Sleepiness Scale score of ≥10, than those who did not experience headache among the patients with narcolepsy (93.8% vs. 65.6%, p = 0.040) and idiopathic hypersomnia (86.7% vs. 37.5%, p = 0.026). Dream-enacting behaviour (DEB), as evaluated by the rapid eye movement sleep disorders questionnaire, was more frequently observed in the narcolepsy patients than in the idiopathic hypersomnia patients and the control subjects. An increased DEB frequency was observed in the narcolepsy patients with migraines compared to those without headache.

conclusionsMigraines were frequently observed in patients with narcolepsy and idiopathic hypersomnia. DEB is a characteristic of narcolepsy patients. Further studies are required to assess the factors that contribute to migraines in narcolepsy and idiopathic hypersomnia patients.

Indexed as

Surveys and QuestionnairesAdultAgedAsian PeopleComorbidityCross-Sectional StudiesDisorders of Excessive SomnolenceFemaleHeadacheHumansJapanMaleMiddle AgedMigraine DisordersNarcolepsyOutpatients

Identifiers

PMID26418536
PMCPMC4587931

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.