Oppositional Defiant Disorder has been defined as a pattern of hostile and defiant behaviors towards authority figures that exists for at least 6 months. For more information on causes, symptoms and prevalence, please click on the links below:

Medical Sites

American Academy of Children & Adolescent Psychiatry

Boston Children’s Hospital

Kids Mental Health Info

Mayo Clinic

Medline Plus

Medscape

My Asperger’s Child Blog

Psych Central

Sensory Spectrum

WebMD