Your next patient is Tom, an otherwise healthy 22-year-old male. He has returned for the fourth time within the last 3 months for intermittent generalized abdominal pain, nausea, and vomiting. A review of his previous visits reveals that he has been extensively worked up with a normal abdominal ultrasound, x-ray, and even a CT scan. He was also referred for endoscopy, which showed gastritis with a Mallory-Weiss tear and was started on pantoprazole …