A 3-year-old boy is brought to the ED by his mother after a 5-minute episode of loss of consciousness and generalized body twitching. For the past 2 days he has had a fever. He has no past medical history. Immunizations are up to date. He is alert and oriented. Otoscopic examination is normal. Neurologic and physical examination show no abnormalities. Temperature is 103.5 F. Which of the following is the next best step in management?
Audiometry
Ibuprofen
Metaiodobenzylguanidine scan
Urinary homovanillic acid and vanillylmandelic acid
Urinary metanephrines
