Evidence map›Paper›PMID 36178541›Full record

ArticleJournal of neurology2023

Structural brain changes in patients with persistent headache after COVID-19 resolution.

Álvaro Planchuelo-Gómez, David García-Azorín, Ángel L Guerrero, Margarita Rodríguez, Santiago Aja-Fernández, Rodrigo de Luis-García

Open access · hybridAbstract read
In one paragraph

Article in Journal of neurology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 4 pooled it
5.3field-weighted citation impact, top 4% 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

22 citing papers in PubMed, 4 syntheses or guidelines pooled it, 38 citations in OpenAlex.

  1. Pooled it
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  3. Post-COVID-19 conditions: a systematic review on advanced magnetic resonance neuroimaging findings.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2024
    Pooled it
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  5. Article
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  7. Neuroimmune pathophysiology of long COVID.Psychiatry and clinical neurosciences · 2025
    Review
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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

6 authors at 2 institutions in 2 countries.

Álvaro Planchuelo-GómezLaboratorio de Procesado de Imagen (LPI), Universidad de Valladolid, 47011, Valladolid, Spain.ORCID http://orcid.org/0000-0002-2188-4197
David García-AzorínDepartment of Neurology, Headache Unit, Hospital Clínico Universitario de Valladolid, Avenida Ramón y Cajal, 3, 47003, Valladolid, Spain. dgazorin@ucm.es.ORCID http://orcid.org/0000-0002-3132-1064
Ángel L GuerreroDepartment of Neurology, Headache Unit, Hospital Clínico Universitario de Valladolid, Avenida Ramón y Cajal, 3, 47003, Valladolid, Spain.ORCID http://orcid.org/0000-0001-7493-6002
Margarita RodríguezDepartment of Radiology, Hospital Clínico Universitario de Valladolid, 47003, Valladolid, Spain.ORCID http://orcid.org/0000-0002-7415-5908
Santiago Aja-FernándezLaboratorio de Procesado de Imagen (LPI), Universidad de Valladolid, 47011, Valladolid, Spain.ORCID http://orcid.org/0000-0002-5337-5071
Rodrigo de Luis-GarcíaLaboratorio de Procesado de Imagen (LPI), Universidad de Valladolid, 47011, Valladolid, Spain.ORCID http://orcid.org/0000-0001-5023-6490
Universidad de Valladolid · ESHospital Clínico Universitario de Valladolid · ES

Funding

Gerencia Regional de Salud, Castilla y Leon GRS 2284/A/2020
6 · The paper itself

Abstract

Headache is among the most frequently reported symptoms after resolution of COVID-19. We assessed structural brain changes using T1- and diffusion-weighted MRI processed data from 167 subjects: 40 patients who recovered from COVID-19 but suffered from persistent headache without prior history of headache (COV), 41 healthy controls, 43 patients with episodic migraine and 43 patients with chronic migraine. To evaluate gray matter and white matter changes, morphometry parameters and diffusion tensor imaging-based measures were employed, respectively. COV patients showed significant lower cortical gray matter volume and cortical thickness than healthy subjects (p < 0.05, false discovery rate corrected) in the inferior frontal and the fusiform cortex. Lower fractional anisotropy and higher radial diffusivity (p < 0.05, family-wise error corrected) were observed in COV patients compared to controls, mainly in the corpus callosum and left hemisphere. COV patients showed higher cortical volume and thickness than migraine patients in the cingulate and frontal gyri, paracentral lobule and superior temporal sulcus, lower volume in subcortical regions and lower curvature in the precuneus and cuneus. Lower diffusion metric values in COV patients compared to migraine were identified prominently in the right hemisphere. COV patients present diverse changes in the white matter and gray matter structure. White matter changes seem to be associated with impairment of fiber bundles. Besides, the gray matter changes and other white matter modifications such as axonal integrity loss seemed subtle and less pronounced than those detected in migraine, showing that persistent headache after COVID-19 resolution could be an intermediate state between normality and migraine.

Indexed as

COVID-19Migraine DisordersWhite MatterBrainDiffusion Tensor ImagingGray MatterHeadacheHumansMagnetic Resonance ImagingCOVID-19Diffusion tensor imagingGray matterHeadacheMigraine

Identifiers

PMID36178541
PMCPMC9522538
OpenAlexW4298086676

What OpenQuestion holds

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LicenceCC BY
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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.