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What are oppositional defiant disorder causes?

The exact cause of ODD is not fully understood, but research suggests it develops from a mix of biological, psychological, and environmental factors. Common contributors include:
  • Biological: differences in brain development or neurotransmitter activity.
  • Psychological: difficulty with emotional regulation or impulse control.
  • Environmental: inconsistent discipline, family conflict, or exposure to stress.

No single factor causes ODD, but when several risks combine, the chances of a child developing persistent defiant behaviours increase.

If you’re concerned about your child’s risk, book a consultation now for tailored support.