Introduction: Olfactory disorders are among the four most common post-COVID-19 complaints. The aim of our prospective study from a university ENT post-COVID consultation (PCS) was to substantiate the symptoms with psychophysical test results.

Methods: After an ENT examination, 60 post-COVID-19 patients (41 women) were asked in writing about their medical history. Their ability to smell was tested using the extended Sniffin' Sticks test battery and their ability to taste was determined using the 3-drop test. From these data, three quantitative olfactory (RD) and gustatory (SD) diagnoses could be defined from normal value tables. Every second patient took part in a control examination.

Results: Up to the first examination, 60 patients reported smell and 51 taste disorders; their average duration was 11 months in both cases. Objectified pathologic RD and SD had 87% and 42% of the total cohort, respectively. Every third patient suffered from an objectified combination of olfactory and gustatory damage. About every second patient complained of parosmia. Parosmic patients with two visits came earlier for a check-up. Six months after the initial examination, the detection thresholds, the TDI and the RD had improved in these patients. The self-assessment of olfactory ability had not changed.

Conclusions: Objectified pathologic RD persisted in our PCS for a mean of 1.5 years from the onset of infection. Parosmics had a better prognosis. For the healthcare system and especially for the patients affected, they continue to be a burden even after the pandemic.

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http://dx.doi.org/10.1055/a-2092-3913DOI Listing

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