Abstract
Stress, such as infection and ischemic heart disease, can cause thyroid storm. Thyroid storm occurs mostly from Graves’ disease, which may be unnoticed and undiagnosed. In recent years, there have been increasing reports of Graves’ disease developing after COVID-19 vaccination. Here, we report a case in which a patient developed thyroid storm after the first COVID-19 vaccination, and was subsequently diagnosed with Graves’ disease. The patient was a 67-year-old man with no medical history. He was admitted for emergency treatment due to fatigue and dyspnea that began the morningafter receiving a COVID-19 vaccination. Acute ischemic heart failure was diagnosed by electrocardiography
and cardiac catheterization, and he was admitted to the ICU after treatment. Tachycardia continued from the time of admission, and he subsequently developed high fever. Thyroid function tests revealed thyroid storm and Graves’ disease. The development of thyroid storm after vaccination should be kept in mind as well as sudden illness and trauma.