ArticleThe Laryngoscope2023
Long-Term COVID-19 Smell and Taste Disorders Differ Significantly from Other Post-Infectious Cases.
Article in The Laryngoscope, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.
What it found
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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.
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.
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Who cites it
13 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.
- The burden of persistent symptoms after COVID-19 (long COVID): a meta-analysis of controlled studies in children and adults.Virology journal · 2024Pooled it
- Effect of Olfactory Training in COVID-19 Related Olfactory Dysfunction-A Placebo-Controlled Trial.The Laryngoscope · 2025Trial
- Living with a hidden disability - a qualitative study of post-COVID-19 olfactory dysfunction.Frontiers in allergy · 2026Article
- Self-Reported Parosmia, Phantosmia, and Gustatory Dysfunction Among Adults with Mild-to-Moderate COVID-19: A Cross-Sectional Study in Saudi Arabia.Clinics and practice · 2025Article
- Subjective distress mediates the association between olfactory dysfunction duration and depression in post COVID 19 patients.Scientific reports · 2025Article
- Sensing Sociality: Disruptions of Social Life When Living With Chemosensory Dysfunctions After COVID-19.Qualitative health research · 2025Article
- Using Cooking Schools to Improve the Pleasure of Food and Cooking in Patients Experiencing Smell Loss.Foods (Basel, Switzerland) · 2024Article
- Identification of the needs of individuals affected by COVID-19.Communications medicine · 2024Article
- Postinfectious conditions challenge disease-specificity of SNOT-22.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2024Observational
- Living and Coping with Olfactory and Taste Disorders: A Qualitative Study of People with Long-COVID-19.Healthcare (Basel, Switzerland) · 2024Article
- The Olfactory System: Basic Anatomy and Physiology for General Otorhinolaryngologists.Clinical and experimental otorhinolaryngology · 2023Review
- Orthonasal and retronasal odor identification in patients with parosmia.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2023Article
- Impairment of quality of life due to COVID-19-induced long-term olfactory dysfunction.Frontiers in psychology · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionCOVID-19 is causing a wide range of clinical manifestations. Severe complications and long-lasting sequelae have been identified. Thus, olfactory disorders are reported in up to 86% of cases in mild and moderate COVID-19 infections. We present the first study comparing simple and complex post-COVID-19 cases with matched non-COVID-19 post-infectious smell and taste disorders.
methodsA total of 328 patients were recruited from the University Clinic for Flavour, Balance and Sleep, Ear-nose-throat Department, Goedstrup Hospital, Denmark. A non-COVID -19 post-infectious population of 148 individuals was identified from the Redcap database, and was matched by duration of smell and taste disorders. Post-COVID-19 patients were divided into 99 patients with simple smell and taste disorders (only suffering from smell and taste disorders after COVID-19); and (81 patients with complex smell and taste disorder plus several other post-COVID-19 complaints). Besides patient-reported outcome measures (PROM) questionnaires and quality of life score (QoL), ear-nose-throat examination, Mini-Mental State Examination (MMSE), orthonasal smell test (Sniffing's sticks), retronasal quick test, and taste screening were performed.
resultsCases with post-COVID-19-related smell and taste disorders deviated from non-COVID-19 post-infectious cases; the patients were younger, had a lower occurrence of anosmia/ageusia, and had higher overall smell test scores. In contrast, patients with post-COVID-19-related smell and taste disorders more frequently complained of distorted senses. Parosmia and phantosmia were more prevalent among patients with simple post-COVID-19 complaints than among complex cases and their QoL were more negatively affected.
conclusionSmell and taste function differ significantly between post-COVID-19 and other non-COVID-19 post-viral cases. LEVEL OF EVIDENCE: 3 Laryngoscope, 133:169-174, 2023.
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