Evidence mapPaperPMID 39726855Full record

ReviewPain reports2025

Small fiber pathology in fibromyalgia syndrome.

Claudia Sommer, Nurcan Üçeyler

Registry-linked trialAbstract readReview
In one paragraph

Review in Pain reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07682090 (RESET-FMS), which is not on this map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
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.

NCT07682090 narecruitingnot on this mapstarted 2026, after this paper: background citation

RESET-FMS: A Randomized Sham-Controlled Trial of Transcutaneous Vagus Nerve Stimulation for Pain, Autonomic Dysfunction, and Fatigue in Patients With Fibromyalgia Syndrome

TypeinterventionalSponsorUniversity of Roma La SapienzaRan2026 to 2027Enrolled80ConditionsFibromyalgia SyndromeArmsTranscutaneous Vagus Nerve Stimulation, Sham Transcutaneous Vagus Nerve Stimulation
3 · Its place in the literature

Who cites it

19 citing papers in PubMed.

  1. Review
  2. Review
  3. Fibromyalgia: A Multifactorial Pain Disorder.International journal of molecular sciences · 2026
    Review
  4. Article
  5. Review
  6. Article
  7. Article
  8. Review
  9. Review
  10. [Fibromyalgia syndrome].Innere Medizin (Heidelberg, Germany) · 2026
    Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. 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

2 authors.

Claudia SommerDepartment of Neurology, University Hospital Würzburg, Würzburg, Germany.ORCID https://orcid.org/0000-0002-7064-5002
Nurcan ÜçeylerDepartment of Neurology, University Hospital Würzburg, Würzburg, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

About 50% of women with fibromyalgia syndrome have reduced skin innervation. This finding is consistent in patient cohorts from different regions of the world. Small fiber function may also be affected, as shown by various studies using different methods, such as quantitative sensory testing or special small fiber neurophysiology such as C-fiber microneurography. Microneurography in particular has shown increased spontaneous activity, mechanosensitivity, and enhanced activity-induced slowing in C fibers of patients with fibromyalgia. Generalized reduction of skin innervation, ie, proximally and distally, was associated with higher symptom severity and more pronounced central nervous system changes as seen in magnetic resonance tomography. The question whether peripheral or central nervous system changes come first, or whether both are signs of an underlying pathology, has not been resolved yet. For clinical practice, it is important to note that reduced skin innervation in fibromyalgia must not be confused with small fiber neuropathy, which is a separate entity with different characteristics and pathophysiology. Further prospective research is warranted to transfer these findings in the peripheral nervous system into clinical fibromyalgia patient management.

Indexed as

Corneal confocal microscopyEvoked potentialsFibromyalgiaMicroneurographyQuantitative sensory testingSmall fiber neurologySmall fiber pathology

Identifiers

PMID39726855
PMCPMC11671067

What Socratic holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

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 Socratic graph.