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diagnosis

Judged: two independent readers; copy check clear.

collateral

collateral In diagnosis, collateral refers to information gathered from other sources besides the person being assessed, such as developmental history or supporting documentation.

In diagnosis, collateral refers to information gathered from other sources besides the person being assessed, such as developmental history or supporting documentation. It is used to help anchor clinical judgment and strengthen diagnostic validity, especially when self-report or current presentation may be incomplete or unclear.