Attention-deficit/hyperactivity disorder (ADHD) is one of the most common mental disorders affecting children. ADHD also affects many adults. Symptoms of ADHD include inattention (not being able to keep focus), hyperactivity (excess movement that is not fitting to the setting) and impulsivity (hasty acts that occur in the moment without thought).
An estimated 8.4 percent of children and 2.5 percent of adults have ADHD. ADHD is often first identified in school-aged children when it leads to disruption in the classroom or problems with schoolwork. It can also affect adults. It is more common among boys than girls.
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Based on the types of symptoms, three kinds (presentations) of ADHD can occur:
Because symptoms can change over time, the presentation may change over time as well.
People with ADHD show a persistent pattern of inattention and/or hyperactivity–impulsivity that interferes with functioning or development:
ADHD often lasts into adulthood. To diagnose ADHD in adults and adolescents age 17 or older, only 5 symptoms are needed instead of the 6 needed for younger children. Symptoms might look different at older ages. For example, in adults, hyperactivity may appear as extreme restlessness or wearing others out with their activity.
For adults, an ADHD diagnostic evaluation should be conducted by a licensed mental health professional or a physician. These professionals include clinical psychologists, physicians (psychiatrist, neurologist, family doctor or other type of physician) or clinical social workers.
Whichever type of professional is chosen, it is important to ask about their training and experience in working with adults with ADHD. Many times the professional’s level of knowledge and expertise about adult ADHD is more important for obtaining an accurate diagnosis and effective treatment plan than the type of professional degree. Qualified professionals are usually willing to provide information about their training and experience with adults with ADHD. Reluctance to provide such information in response to reasonable requests should be regarded with suspicion and may be an indicator that the individual should seek out a different professional.
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ADDA (Attention Deficit Disorder Association)
The world’s leading adult ADHD organization.
Drug uses and effects as well as help with addiction.
American Psychiatric Association
Information about common mental disorders, including symptoms, risk factors and treatment options.
Information about the symptoms, diagnosis and treatment of ADHD.
National Institute of Mental Health
Shares information to help in the diagnosis and treatment of ADHD.
National Resource Center on ADHD
Information to help improve the lives of people affected by ADHD.
What is ADHD, anyway? Well, you're about to find out just about everything you need to know about ADD/ADHD, or attention deficit hyperactivity disorder. In this 28-minute video, Understood expert Tom Brown discusses everything about ADHD in children -- from ADHD symptoms to various treatment options, including ADHD medication. Grab a cup of coffee and get ready to hear what a leading expert in the field shares with all his new patients!