• Colin Feeney, Julie Vu, and Chizobam Ani.
• Internal Medicine Department, Alameda County Medical Center, 1411 E 31st St, Oakland, CA 94602, USA. cfeeney@acmedctr.org
• J Natl Med Assoc. 2010 Dec 1; 102 (12): 1254-7.

BackgroundThe use of the Taser (Taser International, Scottsdale, Arizona) as a form of nonlethal force is increasingly common because of its safety profile. Tasers have been associated with in-custody mortality particularly in agitated individuals, though potential explanatory mechanisms are poorly understood. While Tasers are often used to subdue acutely agitated individuals, no study has reported Taser exposure precipitating agitation or delirium, even though high-voltage electrical exposure is well documented independently to precipitate acute delirium.ObjectivesWe present a case of an acute agitated or delirious state occurring post-Taser exposure in a resting, otherwise nonagitated individual.Case ReportThe patient was a 37-year-old African American male with no prior psychiatric history, tasered multiple times during an arrest episode. He became delirious and agitated while in the emergency department, requiring sedation and intubation, followed by 3 days of continued refractory delirium. Toxicology screening demonstrated therapeutic doses of methadone and trace amounts of marijuana, not thought to be associated with the acute onset of the patient's agitated or delirious state. Imaging, neurological, and psychiatric assessments were similarly not contributory.ConclusionThe occurrence of acute agitation and delirium in this patient without any prior psychiatric history or significant substance use suggests an association with Taser exposure. This case report is thought to be the first report demonstrating a temporal association between Taser exposure and an acute or delirious state. Further studies to explore the association between Taser exposure and acute agitation are needed.

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