14. A healthy-appearing 23-year-old Caucasian woman presents…
14. A healthy-appearing 23-year-old Caucasian woman presents to the emergency department following a motor vehicle collision in which she was rear ended. She denies any current symptoms, and physical examination is only positive for a seat belt abrasion. She reports a history of seizures, which are now under control with carbamazepine, but otherwise has a benign medical history. The only abnormality noted in lab work is an absolute neutrophil count of 1000 cells per microliter. Based on the information provided, what is most likely cause of the neutropenia?