... the end of a pivotal year for the long-standing, nationwide effort to discard the use of excited delirium in official proceedings. Over the past 40 years, the discredited, racially biased theory has been used to explain away police culpability for many in-custody deaths. But in October, the American College of Emergency Physicians disavowed a key paper that seemingly gave it scientific legitimacy, and the College of American Pathologists said it should no longer be cited as a cause of death.
That same month, California’s Democratic Gov. Gavin Newsom signed the nation’s first law to ban the term “excited delirium” as a diagnosis and cause of death on death certificates, autopsy reports, and police reports. Legislators in other states are expected to consider similar bills next year, and some law enforcement agencies and training organizations have dropped references to excited delirium from their policy manuals and pulled back from training police on the debunked theory.
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The use of the term “excited delirium syndrome” became pervasive after the American College of Emergency Physicians published a white paper on it in 2009. It proposed that individuals in a mental health crisis, often under the influence of drugs or alcohol, can exhibit superhuman strength as police try to control them, and then die suddenly from the condition, not the police response.
The ACEP white paper was significant in catalyzing police training and policy, said Marc Krupanski, director of criminal justice and policing at Arnold Ventures, one of the largest nonprofit funders of criminal justice policy. The theory contributed to deaths, he said, because it encouraged officers to apply greater force rather than call medical professionals when they saw people in aggressive states.
After George Floyd’s 2020 death, which officers blamed on excited delirium, the American Medical Association and the American Psychiatric Association formally rejected it as a medical condition. Then came disavowals from the National Association of Medical Examiners and the emergency physicians’ and pathologists’ groups this year.
The moves by medical societies to renounce the term have already had tangible, albeit limited, effects. In November, Lexipol, a training organization used by thousands of public safety agencies in the U.S., reiterated its earlier move away from excited delirium, citing the California law and ACEP’s retraction of the 2009 white paper.
Lexipol now guides officers to rely on what they can observe, and not to guess at a person’s mental status or medical condition, said Mike Ranalli, a lawyer and police trainer with the Texas-based group. “If somebody appears to be in distress, just get the EMS,” he said, referring to emergency medical services.
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