Evidence map›Paper›PMID 34766365›Full record

ArticleMuscle & nerve2022

Small fiber neuropathy associated with SARS-CoV-2 infection.

Rory M C Abrams, David M Simpson, Allison Navis, Nathalie Jette, Lan Zhou, Susan C Shin

Open access · bronzeAbstract read
In one paragraph

Article in Muscle & nerve, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed, 1 pooled it
10.7field-weighted citation impact, top 1% 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

71 citing papers in PubMed, 1 synthesis or guideline pooled it, 125 citations in OpenAlex.

  1. Pooled it
  2. Temporal patterns of neurological deterioration in COVID-19 survivors: a longitudinal cohort analysis of post-acute neurological sequelae.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Article
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  6. Neuroimmune pathophysiology of long COVID.Psychiatry and clinical neurosciences · 2025
    Review
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11 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Rory M C AbramsDepartment of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA.
David M SimpsonDepartment of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA.
Allison NavisDepartment of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA.
Nathalie JetteDepartment of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA.
Lan ZhouDepartment of Neurology, Boston University School of Medicine, Boston, Massachusetts, USA.
Susan C ShinDepartment of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA.
Icahn School of Medicine at Mount Sinai · USBoston University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

INTRODUCTION/

aimsThe development and persistence of neurological symptoms following severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is referred to as "long-haul" syndrome. We aimed to determine whether small fiber neuropathy (SFN) was associated with SARS-CoV-2 infection.

methodsWe retrospectively studied the clinical features and outcomes of patients who were referred to us between May 2020 and May 2021 for painful paresthesia and numbness that developed during or after SARS-CoV-2 infection and who had nerve conduction studies showing no evidence of a large fiber polyneuropathy.

resultsWe identified 13 patients, Eight women and five men with age ranging from 38-67 y. Follow-up duration ranged from 8 to 12 mo. All patients developed new-onset paresthesias within 2 mo following SARS-CoV-2 infection, with an acute onset in seven and co-existing autonomic symptoms in seven. Three patients had pre-existing but controlled neuropathy risk factors. Skin biopsy confirmed SFN in six, all of whom showed both neuropathy symptoms and signs, and two also showed autonomic dysfunction by autonomic function testing (AFT). Of the remaining seven patients who had normal skin biopsies, six showed no clinical neuropathy signs and one exhibited signs and had abnormal AFT. Two patients with markedly reduced intraepidermal nerve fiber densities and one with normal skin biopsy had severe and moderate coronavirus disease 2019 (COVID-19); the remainder experienced mild COVID-19 symptoms. Nine patients received symptomatic neuropathy treatment with paresthesias controlled in seven (77.8%). DISCUSSION: Our findings suggest that symptoms of SFN may develop during or shortly after COVID-19. SFN may underlie the paresthesias associated with long-haul post-COVID-19 symptoms.

Indexed as

COVID-19Peripheral Nervous System DiseasesSmall Fiber NeuropathyFemaleHumansMaleRetrospective StudiesSARS-CoV-2long-haul COVID-19 symptomsneurological complicationspost-acute COVID-19 syndromeSARS-CoV-2small fiber neuropathy

Identifiers

PMID34766365
PMCPMC8661991
OpenAlexW3212900803

What OpenQuestion holds

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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.