Evidence map›Paper›PMID 34094848›Full record

ArticleRespiratory medicine case reports2021

Possible role of COVID-19 in the relapse of Klein-Levin Syndrome.

Adeel Nasrullah, Anam Javed, Obaid Ashraf, Khalid Malik

Open access · goldAbstract readCase Reports
In one paragraph

Article in Respiratory medicine case reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.4field-weighted citation impact, top 20% 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

9 citing papers in PubMed, 14 citations in OpenAlex.

  1. Observational
  2. New-onset Kleine-Levin syndrome following COVID-19 infection: A case report.PCN reports : psychiatry and clinical neurosciences · 2025
    Article
  3. Acute encephalitis induced Kleine-Levin syndrome with episodic vertical gaze dysfunction during hypersomnia episodes.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2024
    Article
  4. Article
  5. Article
  6. Relapse of Kleine-Levin Syndrome From COVID-19 Vaccine: Causal or Coincidence?Journal of clinical neurology (Seoul, Korea) · 2023
    Article
  7. An Update on Kleine-Levin Syndrome.Current sleep medicine reports · 2023
    Review
  8. Article
  9. Article
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

4 authors at 1 institution in 1 country.

Adeel NasrullahDepartment of Medicine, Allegheny Health Network, Pittsburgh, PA, USA.
Anam JavedDepartment of Medicine, Allegheny Health Network, Pittsburgh, PA, USA.
Obaid AshrafDepartement Pulmonology and Critical Care, Allegheny Health Network, Pittsburgh, PA, USA.
Khalid MalikDepartement Pulmonology and Critical Care, Allegheny Health Network, Pittsburgh, PA, USA.
Allegheny Health Network · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Klein-Levin Syndrome (KLS) is an extremely rare neurological disorder which can manifest as recurring spells of sleepiness, cognitive disturbances and behavioral changes. We present a novel case of KLS relapse in the setting of Coronavirus disease-19 (COVID-19). A 36-year-old male who had a known history of KLS since adolescence was admitted with sleepiness and behavioral disturbances. Brain imaging and autoimmune encephalitis work was unremarkable. The patient was diagnosed with a relapse of KLS secondary to COVID-19 based on symptomology and lack of any other precipitating factor. The patient required 8 days of hospitalization and was treated with benzodiazepines due to a history of robust response to lorazepam during a prior episode. The patient progressively improved and was discharged home on lorazepam taper. We report that similar to other neurotropic viruses, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) could be the culprit in instigating KLS relapse.

Indexed as

COVID-19HyperosmniaKlein-Levin syndrome

Identifiers

PMID34094848
PMCPMC8164508
OpenAlexW3168365439

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.