Mainstream medicine does not recognize "excited delirium" as a legitimate diagnosis. It was pretty much invented by the cops to justify suspicious deaths in police custody.
It's controversial in the medical field overall but it is general accepted in emergency medicine.
No, it's quackery. We know that you are desperate to see a killer walk free but that doesn't make your lies any more truer.
may be quackery but ...
Discussion: Excited delirium syndrome is characterized by delirium, agitation, acidosis, and hyperadrenergic autonomic dysfunction, typically in the setting of acute-on-chronic drug abuse or serious mental illness or a combination of both.
Conclusions: Based upon available evidence, it is the consensus of an American College of Emergency Physicians Task Force that Excited Delirium Syndrome is a real syndrome with uncertain, likely multiple, etiologies.
https://pubmed.ncbi.nlm.nih.gov/21440403/