Attention-deficit/hyperactivity disorder (ADHD) is a chronic mental disorder that disrupts one’s ability to manage their emotions and actions. This disorder can be ...

Medically reviewed by Steven Gans, MD Key Takeaways ADHD symptoms often start in childhood and can affect success at school, ...

Attention-deficit/hyperactivity disorder (ADHD) is a disorder that affects the way the brain grows and develops from childhood. About 6% of U.S. adults have been ...

This post is the second in a series, “Connecting Biology to Behavior: Inside the ADHD Brain." Read the first post to learn about the role of dopamine in ADHD behaviors. Your child shuts down on a ...