Oppositional Defiant Disorder (ODD)

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).