ODD (Oppositional Defiant Disorder)
What it means
A diagnosed pattern of persistently angry or irritable mood, argumentative or defiant behaviour, or vindictiveness that causes meaningful difficulty. Assessment should consider development, context, communication, other conditions, and unmet support needs.
Term details
Category: diagnosis
Regional use: general
Last source check: July 28, 2026
Source
Check this definition against medlineplus.gov. Open the source before making health, education, funding, or legal decisions because guidance can change.
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