Attention-deficit/hyperactivity disorder (previously known as attention deficit disorder or ADD) is a neurobehavioral disorder characterized by core symptoms of inattentiveness, distractibility, hyperactivity, and impulsivity.
ADHD is thought to be the most common childhood mental health disorder, with estimates of its prevalence in children ranging from 5 to 11 percent. Some of these children find it difficult to concentrate on schoolwork or other tasks and may frequently begin daydreaming. Others become disruptive, defiant and have trouble getting along with parents, peers, or teachers. Children who struggle with hyperactivity and impulsivity, in particular, frequently have behavioral challenges that can be difficult for adults to manage. It’s also possible for both sets of symptoms to exist together, in what is typically called combined type ADHD. Executive functioning (planning, emotional regulation, and decision-making) is invariably affected as well.
Experts disagree over whether treatment for ADHD should be behavioral (therapy, training of attention, increased play, greater structure) or pharmacological—typically, the prescription of stimulants such as Ritalin and Adderall, though non-stimulant options have become more common in recent years. Several large studies have concluded that a combination of both may work best.
Managing work, school, and household tasks can be a challenge for children and adults with ADHD. Fortunately, they can learn coping skills to work around shortcomings and harness their talents—as many successful individuals with ADHD have already done. For more on causes, symptoms, and treatments of ADHD, see our Diagnosis Dictionary.