ADHD, short for Attention Deficit Hyperactivity Disorder, is a frequently occurring neurodevelopmental condition that impacts attention and behavior. For instance, people with ADHD are more easily distracted than people who don’t have it. ADHD can make it harder to focus, listen well, wait, or take your time. ADHD, once considered predominantly a childhood disorder, is now recognized as a common behavioral condition that can persist into adulthood.