Review Question - QID 212758

A 24-year-old man presents to his primary care physician for a persistent and low grade headache as well as trouble focusing. The patient was seen in the emergency department 3 days ago after hitting his head on a branch while biking under the influence of alcohol. His head CT at the time was normal, and the patient was sent home with follow up instructions. Since the event, he has experienced trouble focusing on his school work and feels confused at times while listening to lectures. He states that he can’t remember the lectures and also says he has experienced a sensation of vertigo at times. On review of systems, he states that he has felt depressed lately and has had trouble sleeping, though he denies any suicidal or homicidal ideation. His temperature is 98.2°F (36.8°C), blood pressure is 122/65 mmHg, pulse is 70/min, respirations are 12/min, and oxygen saturation is 98% on room air. The patient’s neurological and cardiopulmonary exam are within normal limits. Which of the following is the best next step in management?