Attention-deficit/hyperactivity disorder (AD/HD) is a neurobiological disorder characterized by hyperactivity, impulsive behavior, and the inability to remain focused on tasks or activities.
Multiple risk factors for development and persistence of antisocial behaviors include genetic, neurobiological, and environmental stressors beginning at the prenatal stage and often continuing throughout the childhood years.
Neurobiological risks include maternal drug use during pregnancy, birth complications, low birth weight, prenatal brain damage, traumatic head injury, and chronic illness.