mr. smith, a 73 year-old male with mild type 2 diabetes, hypertension and a bmi of 40% calls to schedule an appointment. he states that he is feeling very anxious and fatigued and is having difficulty eating and sleeping. he arrives at the clinic with his wife and needs to check in. during the patient interview, he states that he wakes up in the middle of the night almost every night. he also has many nights when he cannot fall asleep. in addition, he has lost about 8 lbs in the last months. his symptoms started when his son died 6 months ago.