Review Question - QID 214333

A 24-year-old woman presents to the emergency department with 1 day of severe facial pain. She describes the pain as a stabbing sensation affecting the left lower face. Her symptoms last a few seconds but occur numerous times during the day. She denies any recent trauma to the face but notices that chewing and brushing her teeth exacerbates the pain. She is otherwise healthy but recalls an episode of urinary retention approximately 1 year ago, requiring a Foley urinary catheter to be temporarily placed. Approximately 6 months ago, she experienced an electric shock from her neck radiating down her spine after her head was flexed forward while in a hair salon. She has no significant past medical history. This patient’s constellation of symptoms is most likely associated with which of the following?