More Than Smell-COVID-19 Is Associated With Severe Impairment of Smell, Taste, and Chemesthesis
- PMID: 32564071
- PMCID: PMC7337664
- DOI: 10.1093/chemse/bjaa041
More Than Smell-COVID-19 Is Associated With Severe Impairment of Smell, Taste, and Chemesthesis
Erratum in
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Corrigendum to: More Than Smell-COVID-19 Is Associated With Severe Impairment of Smell, Taste, and Chemesthesis.Chem Senses. 2021 Jan 1;46:bjab050. doi: 10.1093/chemse/bjab050. Chem Senses. 2021. PMID: 34879393 Free PMC article. No abstract available.
Abstract
Recent anecdotal and scientific reports have provided evidence of a link between COVID-19 and chemosensory impairments, such as anosmia. However, these reports have downplayed or failed to distinguish potential effects on taste, ignored chemesthesis, and generally lacked quantitative measurements. Here, we report the development, implementation, and initial results of a multilingual, international questionnaire to assess self-reported quantity and quality of perception in 3 distinct chemosensory modalities (smell, taste, and chemesthesis) before and during COVID-19. In the first 11 days after questionnaire launch, 4039 participants (2913 women, 1118 men, and 8 others, aged 19-79) reported a COVID-19 diagnosis either via laboratory tests or clinical assessment. Importantly, smell, taste, and chemesthetic function were each significantly reduced compared to their status before the disease. Difference scores (maximum possible change ±100) revealed a mean reduction of smell (-79.7 ± 28.7, mean ± standard deviation), taste (-69.0 ± 32.6), and chemesthetic (-37.3 ± 36.2) function during COVID-19. Qualitative changes in olfactory ability (parosmia and phantosmia) were relatively rare and correlated with smell loss. Importantly, perceived nasal obstruction did not account for smell loss. Furthermore, chemosensory impairments were similar between participants in the laboratory test and clinical assessment groups. These results show that COVID-19-associated chemosensory impairment is not limited to smell but also affects taste and chemesthesis. The multimodal impact of COVID-19 and the lack of perceived nasal obstruction suggest that severe acute respiratory syndrome coronavirus strain 2 (SARS-CoV-2) infection may disrupt sensory-neural mechanisms.
Keywords: head and neck surgery; olfaction; somatosensation.
© The Author(s) 2020. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
Comment in
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Altered taste in patients with COVID-19: The potential role of salivary glands.Oral Dis. 2021 Apr;27 Suppl 3(Suppl 3):798-800. doi: 10.1111/odi.13496. Epub 2020 Jul 13. Oral Dis. 2021. PMID: 32564416 Free PMC article. No abstract available.
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