Condition Basics

What is attention deficit hyperactivity disorder (ADHD)?

Attention deficit hyperactivity disorder (ADHD) is a common condition. A person who has ADHD has trouble paying attention and focusing on tasks, tends to act without thinking, and has trouble sitting still.

It may begin in early childhood and can continue into adulthood. ADHD can be treated with medicines, behavior therapy, and counseling. Treatment can improve your life.

In the past, ADHD was called attention deficit disorder (ADD).

What causes it?

The exact cause of ADHD is not clear. It tends to run in families, so genetics may be involved. Scientists are studying other possible causes, such as things in the environment and things that happen before or after birth.

What are the symptoms?

ADHD is a condition that makes it hard to pay attention. People with ADHD also may be more active than normal and tend to act without thinking. ADHD may make it harder to focus, get organized, and finish tasks.

How is it diagnosed?

A doctor relies on a combination of exams, tests, and other information to diagnose ADHD. It is often diagnosed when a child is between 6 and 12 years old. Parents and teachers may first notice symptoms in children who are in this age group.

How is ADHD treated?

Treatment for ADHD will depend on the age of the person. It may include medicines and behavior therapy. Younger children are first treated with behavior therapy. As children get older, behavior therapy and medicines may be used. Adults are usually treated with medicines. Counseling to learn more about ADHD may also help.