Find out what causes attention deficit/hyperactivity disorder (ADHD), what the symptoms are, and how it’s treated.

Learn what role genetics, the environment, and watching TV may play in causing ADHD.

Get the story behind the statistics on ADHD.

ADHD is not just for kids. About 60% of children who have ADHD still have it when they grow up. Adult ADHD can affect work, relationships, and other aspects of your life.

There are three types of ADHD: Inattentive (formerly called ADD), hyperactive-impulsive, and combined.

The symptoms of inattentive ADHD may include daydreaming, disorganization, and careless mistakes.

Fidgeting, nonstop talking, and impatience are among the symptoms of hyperactive-impulsive ADHD.