A 3-yeаr-оld bоy presents tо urgent cаre with his pаrents after an episode of "whole-body shaking" followed by a few minutes of unresponsiveness. Since the episode, he has been more awake but still appears sleepy. He has no significant past medical history, takes no medication, and has no family history of seizure disorder. His vitals are oral temperature 103.4 F (39.7 C), heart rate 140 bpm, blood pressure 100/60 mmHg, respiration rate 22 breaths/min, and oxygen saturation 98% on room air. The general physical exam is remarkable for warm skin and tachycardia. The neurological exam is normal. What is the most appropriate initial management?