CausesBy Mayo Clinic staff
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
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