Attention Deficit Hyperactivity Disorder (ADHD) is a neurodevelopmental disorder that is usually diagnosed in childhood and can persist through adulthood. A child with ADHD may experience any or all of the following symptoms: difficulty paying attention, forgetting or losing things, excessive talking, making careless mistakes, difficulty with turn-taking or getting along with others, hyperactivity, or impulsive behavior. In adults with ADHD, hyperactivity likely decreases, although impulsiveness, restlessness, and difficulty with attention and organization may persist, which may lead to unstable relationships, poor work or school performance, and low self-esteem.