Review Question - QID 212891

A 45-year-old African American woman presents to the clinic for complaints of intermittent diarrhea and mouth sores for the past 3 months. The symptoms began shortly after a trip to Kenya where she volunteered at a medical clinic. The diarrhea is described as intense, explosive, and refractory to conventional anti-diarrheal medications. She reports intermittent flushing, abdominal pain, and forgetfulness but denies fevers, chills, shortness of breath, palpitations, or nausea/vomiting. Her past medical history is unremarkable. A physical examination demonstrates significant skin changes shown in Figure A but is otherwise unremarkable. What is the most appropriate treatment for this patient?