1. Diabetic ketoacidosis (DKA) DKA is commonly associated with type 1 diabetes. It is characterized by the relative or complete absence of insulin, hyperkalemia, hyperglycemia, lipolysis, and proteolysis. 2. Hyperglycemic hyperosmolar state (HHS) HHS is associated with type 2 diabetes. In HHS, the deficiency of insulin is less severe than that in DKA. It is characterized by hyperglycemia, dehydration, and hyperosmolar-induced diuresis. 3. Hyperglycemia without acidosis It can occur in both type 1 and type 2 diabetes. There are no signs of DKA or HHS. It may also be present in chronically hyperglycemic patients. 4. Hypoglycemia The most common cause of hypoglycemia is improper usage of insulin. Symptomatic hypoglycemia can be life-threatening. Reference: https://www.jems.com/patient-care/assessment-treatment-of-five-diabetic-emergencies/ Image via: https://www.gulf-times.com/story/576302/Diabetic-emergencies-Warning-signs-and-what-to-do