The article you requested is

Intranasal Ketamine for Intermittent Explosive Disorder: A Case Report

J Clin Psychiatry 2007;68(8):1305 [letter]

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Sir: Ketamine is an N-methyl-D-aspartate blocker. Nasal administration has been used successfully to abort one type of paroxysmal neurologic disorder, namely migraine.1,2 This case describes successful use to abort rage episodes refractory to multiple medical and behavioral interventions.​​