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According to the DMS-5,
a person must show at least four symptoms from each of the following categories to be diagnosed with ODD:


Angry or Irritable Mood
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Frequently loses their temper
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Frequently angry or resentful
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Easily annoyed or often touchy
Argumentative or Defiant Behavior
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Frequently argues with authority figures or adult
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Aggressively rejects or refuses to obey authority figures' or rules' instruction
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Frequently annoys others
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Frequently blames others for their mistakes or misbehaviors
Vindictiveness
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Having been spiteful or vindictive at least twice in the last six months
Note that the symptoms must last at least six months and should be visible during interactions with at least one non-sibling individual.
The following scale from the DSM-5 can be used to determine the severity of ODD:
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Mild: Symptoms are limited to a single setting.
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Moderate: At least two settings will have some symptoms.
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Severe: Symptoms must appear in three or more settings.
For parents and educators, children with ODD exhibit challenging behaviors. They show hostility and willful misbehavior, for example. They frequently struggle to interact appropriately with peers and adults. Argumentative and stubborn behavior is also common in children with ODD.
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It is vital to remember that ODD symptoms manifest themselves across numerous domains, not only at home. Many children engage in oppositional behaviors when they are with their parents, but not in any other situation.
