The rule that keeps what a patient tells a therapist out of court - who it covers, who holds it, how it is waived, and the duty-to-warn and child-abuse exceptions that override it.
Communications between a patient and a licensed psychotherapist for the purpose of diagnosis or treatment are privileged: neither the therapist nor anyone else can be compelled to disclose them in a legal proceeding without the patient's consent. The federal courts recognised the privilege as a matter of common law, reasoning that effective psychotherapy depends on confidence and that the evidence lost is evidence that would not exist without the privilege; every state has a statutory version. It covers psychiatrists, psychologists and, in the federal courts and most states, licensed clinical social workers and counsellors; it does not cover conversations with an unlicensed advisor, a friend or a clergy member, which may have privileges of their own.
The privilege belongs to the patient, who can waive it, and it is most often lost by the patient putting their own mental condition in issue - claiming emotional distress damages in a lawsuit, raising an insanity or diminished capacity defence, or seeking custody where the court must assess fitness. Courts differ on how far such a claim opens the records: some hold that any emotional distress claim waives the privilege, others only a claim for a diagnosed condition or one supported by the therapist's testimony. Records shared with an insurer or an employer for a benefit claim may also lose protection to that extent.
The privilege is an evidentiary rule; confidentiality outside court is governed separately by licensing rules and the federal health privacy regulation, which gives psychotherapy notes extra protection. Every version has exceptions: a therapist's duty to warn or protect an identifiable person the patient has threatened, mandatory reporting of child abuse and, in most states, elder abuse, court-ordered examinations, and civil commitment proceedings. The therapist's disclosure in those situations is lawful and the privilege does not prevent it.
A litigant should ask their lawyer before filing whether the claims or defences they are raising will put their therapy records in play, because that decision is made when the pleading is drafted and is hard to unmake. A patient who receives a subpoena for their records, or a therapist who does, should not produce them or refuse them without advice - the correct response is usually a written objection asserting the privilege and a request for a court ruling, not silence.
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