COVID-Induced Hyperthyroidism in a 30-Year-Old Female: A Case Study

Thyroiditis should be in the differential for hyperthyroidism when thyroid-stimulating hormone (TSH) is suppressed and T3/T4 levels are elevated. Suspicion of hyperthyroidism is further increased when the patient can exhibit symptoms such as weight loss, anxiety, feeling feverish, tremors, shaking, and sweating. Hyperthyroidism is generally classified as being overt or subclinical. In the following case, the patient had overt hyperthyroidism which is considered more severe than subclinical hyperthyroidism. Coronavirus disease is not typically associated with thyroiditis; however, in this case, the patient's disorder was accidentally found on her blood results which were originally taken due to her coronavirus disease 2019 (COVID-19) diagnosis.  In this case study, we present a 30-year-old female patient, with suspicions of COVID-19-induced hyperthyroidism found incidentally on her blood panel. An original diagnosis of thyroiditis was made prior to the visualization of increased release of thyroid hormone. A sonogram was done, and a follow-up blood panel was ordered, confirming the patient's diagnosis of hyperthyroidism post COVID-19 recovery.