Oppositional Defiant Disorder (ODD)
Educational tool. Not medical advice.
Diagnostic timing
1 wk1 mo6 mo1 yr2 yr
Timing criteria (plain language)
Duration of symptoms needed to diagnose: at least 6 months.
Nuances: Pattern lasts ≥6 months. Frequency differs by age (e.g., <5 years: most days; ≥5 years: at least once per week).