Behavioural disorders: Signs and symptoms

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Learn about the main symptoms of oppositional defiant disorder and conduct disorder.

Key points

  • Symptoms of oppositional defiant disorder include anger or irritability, being argumentative or defiant and spitefulness.
  • Symptoms of conduct disorder include aggression to people and animals, property damage, deception and intentionally breaking rules.
  • Ask your child’s doctor to connect you with the right resources for assessment and treatment.
  • Behavioural disorders are diagnosed through a thorough assessment by an experienced mental health professional.
Last updated: June 20th 2017