Your patient is a 25-year-old female with a history of diabetes. She is confused, agitated, and verbally abusive to you, and she is very sweaty. Although she refuses to give a history of the present illness, you should suspect which of the following as the likely cause of the patient's presentation?

A) A nondiabetic-related problem, such as a head injury or mental illness
B) Excessive intake of foods high in sugar, such as soda or candy
C) Failure to take her insulin
D) Failure to intake sufficient sugar

D