Paramedics roll in with an agitated young man, “John”. He is combative, rambling, sweaty and scared. The crew mention they found needles and a bag containing a crystalline white substance in his pockets: methamphetamine. Right away, you start thinking about your initial approach to a patient with excited delirium. In the room, four security guards are needed to restrain him.  On inspection, you observe no signs of head trauma, and symmetrical movement of …