Cal. Health & Safety Code § 24403

Pursuant to Section 1156.5 of the Evidence Code, evidence that a person suffered or experienced excited delirium is inadmissible in any civil action. A party or witness may describe the factual circumstances surrounding the case, including a person’s demeanor, conduct, and physical and mental condition at issue, including, but not limited to, a person’s state of agitation, excitability, paranoia, extreme aggression, physical violence, and apparent immunity to pain, but shall not describe or diagnose such demeanor, conduct, or condition by use of the term excited delirium, or attribute such demeanor, conduct, or physical and mental condition to that term.