AST is most commonly encountered in the pediatric and adolescent populations, usually in those with congenital anomalies such as a pyriform sinus fistula [5, 6]. Only 8% of cases occur in adulthood; in many cases, the source of infection is not obvious [2, 7]. It may present similarly to subacute thyroiditis, with painful thyroid swelling, fever, and leukocytosis following an upper respiratory tract infection (URTI). AST exhibits a wide range of illness severity, from complete resolution back to a euthyroid state to a greater than 12% mortality rate if no interventions are initiated [2, 3].