When it comes to behaviour and ADHD, some people refer to the “three degrees” or 3 stages of ADHD.
The least troublesome is ADD, the Inattentive Type, then the Combined Type, and then finally the Hyperactive Type being the most disruptive.
The Inattentive Type is predominantly female. The lack of disruption is the primary reason why so many girls and women have slipped through the cracks when it comes to diagnosing the Inattentive Type
The next stage of behaviour severity is Oppositional Defiance Disorder. This where the person with ODD simply refuses to obey or follow instructions. I like to think of this as jabbing titanium high-heel spikes deep into concrete and refusing to budge.
The percentage of ADDers who have ODD is surprisingly high at 67%, by far the most common co-occurring behaviour.
ODD (Oppositional Defiance Disorder) is nearly always a co-occurring condition , so one needs to ask - is it ODD on its own or is it co-occurring with ADHD or another condition?
About 40 percent of individuals with ADHD have oppositional defiant disorder (ODD).
Among individuals with ADHD, conduct disorder (CD) is also common, occurring in 25 percent of children, 45-50 percent of adolescents and 20-25 percent of adults.
ODD involves a pattern of arguing with multiple adults, losing one's temper, refusing to follow rules, blaming others, deliberately annoying others, and being angry, resentful,spiteful, and vindictive.