Tehran University of Medical Sciences Case Reports in Clinical Practice 2538-2683 7 5 2023 02 19 261 263 EN Shahram Samadi Department of Anesthesiology and Intensive Care, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran. Mohammadreza Salehi Department of Infectious Diseases Infectious Diseases, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran. Hamidreza Emadi Department of Infectious Diseases Infectious Diseases, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran. Zahra Saffarian Department of Dermatology, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran. mohammad eslami Medical School,Tehran University of Medical Sciences, Tehran, Iran. 2022 08 04 2022 11 06 Subacute thyroiditis is an uncommon thyroid disease which usually occurs after a viral infection. During COVID-19 pandemics, several subacute thyroiditis cases were identified during or after COVID-19. Due to their similar manifestations and high prevalence of COVID-19, subacute thyroiditis might be neglected if the clinicians do not keep it in mind. In this care report, we present a missing patient with SARS-COV-2 infection and subacute thyroiditis which was not suspected until the latent phase of the disease.The patient report can be a re-emphasis on the importance of clinical examination and especially paying attention to palpation of the thyroid gland. https://crcp.tums.ac.ir/index.php/crcp/article/view/721