Oppositional defiant disorder is the most frequent behavioral disorder in preschoolers. The prevalence of ODD is reported to be between 1 percent and 11 percent in community samples.

Medical Mysteries From Odd Behavior to a Difficult Diagnosis It Wasn't Cancer, Depression or a Stroke. So What Was It?

Researchers collected data on screen use, then evaluated for behavior disorders one year later. Each hour of social media was linked with a 62 percent higher prevalence of conduct disorder, while ...

ODD symptoms include angry/irritable mood, argumentative or defiant behavior, and sometimes being vindictive or spiteful. ODD is not a mood or an anxiety disorder. It’s not ADHD or autism spectrum.