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Persistent olfactory dysfunction in mild COVID-19 patients: A descriptive study of the characteristics and association with other symptoms.
García-Meléndez, David Dylan; Morales-Casado, María Isabel; Quintana Castro, Pilar; Marsal Alonso, Carlos.
  • García-Meléndez DD; Hospital Universitario de Toledo, Av. Río Guadiana, 45007 Toledo, Spain.
  • Morales-Casado MI; Hospital Universitario de Toledo, Av. Río Guadiana, 45007 Toledo, Spain. Electronic address: mimorales@sescam.jccm.es.
  • Quintana Castro P; Hospital Universitario de Toledo, Av. Río Guadiana, 45007 Toledo, Spain.
  • Marsal Alonso C; Hospital Universitario de Toledo, Av. Río Guadiana, 45007 Toledo, Spain.
Med Clin (Barc) ; 160(8): 347-351, 2023 04 21.
Article in English, Spanish | MEDLINE | ID: covidwho-2260128
ABSTRACT

INTRODUCTION:

Post-COVID olfactory dysfunction continues to be studied due to the controversy of the mechanisms involved. The aim was to investigate the olfactory dysfunctions in association with other post-COVID symptoms. MATERIAL AND

METHODS:

Observational, descriptive and single-center study. The patients had confirmed mild COVID-19 and subjective olfactory dysfunction of more than a month of evolution, which was assessed by Sniffin' Sticks Olfactory Test.

RESULTS:

A total of 86 patients participated. The mean age was 37.2 years (SD 9.82). 70.9% reported parosmia and 46.5% symptoms of brain fog. A pathological test result was obtained in 72.1% of the participants. The most failed pen was 11 (apple) in 76.7%. Anosmia of pen 15 (anise) was reported more frequently in 24.4% and cacosmia of pen 9 (garlic) in 27.9%. We observed a significant association between patients who reported parosmias and brain fog (RR 2.18; p=0.018), also between parosmia and phantosmia (RR 6.042; p<0.001).

CONCLUSION:

There is some pathological selectivity for certain test pens, a higher prevalence of cognitive symptoms and many patients with combined parosmia and brain fog.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: COVID-19 / Olfaction Disorders Type of study: Diagnostic study / Observational study / Prognostic study Topics: Long Covid Limits: Adult / Humans Language: English / Spanish Journal: Med Clin (Barc) Year: 2023 Document Type: Article Affiliation country: J.medcli.2022.11.018

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Full text: Available Collection: International databases Database: MEDLINE Main subject: COVID-19 / Olfaction Disorders Type of study: Diagnostic study / Observational study / Prognostic study Topics: Long Covid Limits: Adult / Humans Language: English / Spanish Journal: Med Clin (Barc) Year: 2023 Document Type: Article Affiliation country: J.medcli.2022.11.018