Post COVID-19 subacute thyroiditis-de Quervain: a case series

The Coronavirus disease of 2019 (COVID-19) pandemic had a public impact on various dimensions, including multisystemic complications.One such complication is subacute thyroiditis (SAT), also called subacute granulomatous or de Quervain thyroiditis, in which the severe acute respiratory syndrome-Coronavirus-2 virus affects thyroid tissue.Here we report seven patients with SAT and positive for COVID-19 and real-time quantitativepolymerase chain reaction.Neck pain was the most common symptom, followed by headache, fatigue, lethargy, and fever.Ultrasound revealed typical findings of the SAT.Corticosteroid treatment resulted in a complete improvement of inflammatory parameters and normalization of thyroid hormone levels.Our findings highlight the importance of considering rare cases of SAT as a potential complication of COVID-19.This report can also help physicians from various disciplines to identify such complications and provide better care for COVID-19 patients.