Rare ST-Elevation Myocardial Infarction Mimic: Diabetic Ketoacidosis With Severe Hypercalcemia.

Diabetic ketoacidosis (DKA) is a common complication in patients with type I and ketosis-prone type II diabetes mellitus. A variety of electrolyte derangements are encountered during the presentation and management of DKA. Hypercalcemia has been rarely reported in DKA, particularly when patients develop severe acidosis. However, we describe a patient with DKA and severe hypercalcemia in the absence of severe acidosis. The hypercalcemia quickly corrected back to normal with the treatment of DKA.