There's no known clear cause of oppositional defiant disorder. Contributing causes may be a combination of inherited and environmental factors, including:

  • A child's natural disposition
  • Limitations or developmental delays in a child's ability to process thoughts and feelings
  • Lack of supervision
  • Inconsistent or harsh discipline
  • Abuse or neglect
  • An imbalance of certain brain chemicals, such as serotonin
Jan. 06, 2012

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