This document summarizes key endocrine emergencies including thyroid storm, adrenal crisis, and hypoglycemia. Thyroid storm is a life-threatening complication of hyperthyroidism caused by Graves' disease or toxic multinodular goiter in 1-2% of cases, with a mortality rate of 20% without treatment. Adrenal crisis can occur due to primary or secondary adrenal insufficiency and presents with low blood pressure. Hypoglycemia is most commonly caused by insulin therapy in diabetic patients but can occur in non-diabetics, defined as a blood glucose below 50-60 mg/dL.