Case Study: A 22-year-old college student was admitted to the emergency room after his friends called an ambulance when he passed out in a bar. He had become confused, developed slurred speech, and had difficulty walking after having one beer to drink. In the ER he was noted to have diaphoresis, rapid respirations and pulse, and was disoriented. Upon examination, needle marks were found on his arms and thighs. The physician ordered blood serum tests that revealed hyperglycemia and ketoacidosis. Unknown to his friends, this young man has had diabetes mellitus since early childhood. The patient quickly recovered following an insulin injection.