Caela, 12, is coming into after experiences several alarming symptoms over the last few months. She is experiencing increased thirst and frequent urination. She also wet the bed for the first time in her life this week. She often walks around all day wondering why she is so hungry all the time, yet she is extremely underweight for her age. The symptoms seem to get worse when she eats sugar. Just this evening, she had a bowl of ice cream and started experiencing all the symptoms again. You think Caela could have.....