A study in Hungary has found a link between smaller amygdala volume and a higher risk of attention-deficit/hyperactivity disorder (ADHD) in adolescents. Published in Research on Child and Adolescent Psychopathology, the research indicates that adolescents with a reduced amygdala size tend to have more severe ADHD symptoms, which include inattention, hyperactivity, and impulsivity. ADHD is a common neurodevelopmental disorder that affects 5%-9% of children and adolescents worldwide and often persists into adulthood. While the exact causes of ADHD are not fully understood, the study by Ádám Nárai and colleagues suggests that abnormal brain region volumes may help predict the risk and severity of ADHD symptoms.
