Evidence map›Paper›PMID 37644420›Full record

Trial reportThe journal of headache and pain2023

Cutaneous allodynia as predictor for treatment response in chronic migraine: a cohort study.

Judith A Pijpers, Dennis A Kies, Erik W van Zwet, Irene de Boer, Gisela M Terwindt

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in The journal of headache and pain, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 2 pooled it
4.0field-weighted citation impact, top 5% of its field
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

11 citing papers in PubMed, 2 syntheses or guidelines pooled it, 18 citations in OpenAlex.

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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

5 authors at 2 institutions in 1 country.

Judith A PijpersDepartment of Neurology, Leiden University Medical Centre, PO Box 9600, 2300 RC, Leiden, The Netherlands.
Dennis A KiesDepartment of Neurology, Leiden University Medical Centre, PO Box 9600, 2300 RC, Leiden, The Netherlands.
Erik W van ZwetDepartment Medical Statistics, Leiden University Medical Centre, Leiden, The Netherlands.
Irene de Boer *Department of Neurology, Leiden University Medical Centre, PO Box 9600, 2300 RC, Leiden, The Netherlands.
Gisela M Terwindt *Department of Neurology, Leiden University Medical Centre, PO Box 9600, 2300 RC, Leiden, The Netherlands. g.m.terwindt@lumc.nl.
Leiden University · NLLeiden University Medical Center · NL

Funding

Hersenstichting 2013(1)-247Nederlandse Organisatie voor Wetenschappelijk Onderzoek 917-11-31
6 · The paper itself

Abstract

backgroundCentral sensitisation is an important mechanism in migraine chronification. It is presumed to occur in second and third order neurons sequentially, resulting in an analogous spatial distribution of cutaneous allodynia with cephalic and extracephalic symptoms. We investigated whether allodynia, and its subtypes based on spatial distribution and type of stimulus, predict response to treatment in chronic migraine patients.

methodsThis study was conducted as part of the CHARM study (NTR3440), a randomized, double-blind, placebo-controlled trial in chronic migraine patients with medication overuse. We included 173 patients. The presence of cutaneous allodynia at baseline was established with the Allodynia Symptom Checklist. Primary endpoint was reversion from chronic to episodic migraine.

resultsOf all patients, 74.6% reported cutaneous allodynia. Absence of allodynia compared to presence of allodynia was predictive for reversion from chronic to episodic migraine, odds ratio (OR): 2.45 (95% CI: 1.03-5.84), p = 0.042. The predictive value was more pronounced when subdivided for spatial distribution, for participants without allodynia versus cephalic (OR: 4.16 (95% CI: 1.21-14.30), p = 0.024) and extracephalic (OR: 7.32 (95% CI: 1.98- 27.11), p = 0.003) allodynia. Mechanical, but not thermal, allodynia, was associated with outcome.

conclusionsCutaneous allodynia, an important marker for central sensitization, likely has predictive value for treatment response in chronic migraine.

Indexed as

HyperalgesiaMigraine DisordersCentral Nervous System SensitizationCohort StudiesHumansNeuronsAllodyniaBiomarkerCentral sensitizationChronic migraineMedication overuse

Identifiers

PMID37644420
PMCPMC10466691
OpenAlexW4386245029

What OpenQuestion holds

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Registered trials

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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.