Collateral Information
Clinical information about a patient gathered from sources other than the patient themselves, such as family members, caregivers, medical records, or referring providers.
Full Definition
Collateral information supplements or corroborates the patient's self-report, particularly in cases involving psychosis, impaired insight, substance use, or cognitive deficits where reliable self-report may be limited. It is commonly documented in psychiatric intake assessments, forensic evaluations, and capacity assessments. Editors must note that 'collateral' in this context is an adjective modifying 'information' and should not be used as a standalone noun ('the collateral says…') in formal documents. The source of collateral information must always be identified in documentation, and confidentiality and consent considerations should be referenced where appropriate.
Usage
Usage note: Use as an adjective modifying 'information,' not as a standalone noun. Always identify the source. In forensic contexts, note consent and confidentiality provisions.
In Context
- "Collateral information provided by the patient's spouse confirmed a pattern of hypomanic episodes over the preceding six months that the patient had not disclosed." — Psychiatric intake assessment
- "In formal reports, avoid using 'collateral' as a standalone noun; write 'collateral information' or specify the source: 'information provided by the patient's mother.'" — Editorial style guidance for psychiatric evaluations