What is the most serious complication of hyperthyroidism? Thyroid crisis, also known as hyperthyroidism crisis, is the most serious acute complication of hyperthyroidism! Under certain stress factors, hyperthyroidism will suddenly deteriorate, and all hyperthyroidism symptoms will worsen sharply, even causing confusion of consciousness, trance, coma, etc., endangering life safety. Most of them occur in patients with severe hyperthyroidism and are not treated or undertreated. When hyperthyroidism crisis occurs, if it is not rescued in time, the mortality rate can reach 50%, and even if it is treated in time, there is still a mortality rate of 5% ~ 15%. Does hyperthyroidism crisis show what? High fever; To be soaked with sweat; Tachycardia, heartbeat more than 140 times in one minute; Read More …