The Role of Decision-Making Capacity in Gathering Collateral Information.

AbstractPsychiatric disorders usually do not have characteristic physical exam findings, imaging, or lab values. Psychiatrists therefore diagnose and treat patients largely based on reported or observed behavior, which makes collateral information from a patient's close contacts especially pertinent to an accurate diagnosis. The American Psychiatric Association considers communication with patients' supports a best practice when the patient provides informed consent or does not object to the communication.