**2. Epidemiology**

Thyroid storm is a rare presentation of hyperthyroidism. It accounts for 1–2% of hyperthyroidism admission. The reported incidence of thyroid storm in United States of America (USA) ranges from 0.5 to 0.7% cases/100,000 of normal population per year, where it is 4.8 to 5.6% /100,000 hospitalized patients [2]. The incidence of thyroid storm from Japan is 0.2/100,000 population per year. The thyroid storm patients were younger (42–43 years) and male to female ratio was 1:3 [3].
