Attention-Deficit/Hyperactivity Disorder is a neurobehavioral disorder characterized by a combination of inattention, hyperactivity, and impulsive behavior. Symptoms include difficulty sustaining attention, being forgetful in daily activities, and problems with organizing and following through. Hyperactivity symptoms include being fidgety, restless, impulsive, and excessively talking or interrupting others.
ADHD is generally identified early in life and manifests through behavioral problems at school or difficulty understanding material, completing tasks, or being easily distracted by others. It is estimated that up to 5 percent of school-age children are diagnosed with ADHD, and boys are more often diagnosed than girls, according to the DSM-5. Girls and women are more likely to present with inattentive features. Symptoms of ADHD can be treated effectively with a combination of medication and therapy. When left untreated, however, ADHD can have long-term adverse effects on academic performance, vocational success, relationships, and social-emotional development.
Studies suggest that 2.5 percent of American adults may suffer from ADHD.