Early diagnosis of coronavirus disease 2019 (COVID-19) may help control the diffusion of the disease into the population.

We investigate the presence of sinonasal manifestations at the onset of COVID-19 to achieve an earlier diagnosis.

This retrospective telephone survey study investigated patients diagnosed with COVID-19 from March 5 to March 23, 2020, who were hospitalized or discharged from a single referral center.

Patients who were unable to answer (intubated, receiving noninvasive ventilation, or deceased) or unreachable by telephone were excluded.

Of 359 consecutive patients, 204 fulfilled the inclusion criteria; 76 were unable to answer, 76 were unreachable by telephone, and 3 refused.