Review Question - QID 108997

A 16-year-old girl who recently immigrated to the United States from Bolivia presents to her primary care physician with a chief complaint of inattentiveness in school. The patient's teacher describes her as occasionally "daydreaming" for periods of time during where the patient does not respond or participate in school activities. Nothing has helped the patient change her behavior, including parent-teacher conferences or punishment. The patient has no other concerns. The only other concern that the patient's mother has is that, upon awakening, she notices that sometimes the patient's arm will jerk back and forth. The patient states she is not doing this intentionally. The patient has an unknown medical history and is currently not on any medications. She is not sexually active and does not intend to become pregnant in the near future. Her temperature is 98.6°F (37°C), blood pressure is 112/74 mmHg, pulse is 63/min, and respirations are 11/min. On physical exam, you note a young, healthy girl whose neurological exam is within normal limits. Which of the following is the most appropriate initial treatment?