Attention deficit hyperactivity disorder (ADHD) is a condition characterized by inattention, hyperactivity, and impulsivity. ADHD is most commonly diagnosed in young people, but it does not only affect children. With treatment, people with ADHD can be successful in school and work and lead productive lives. Someone with ADHD may have problems with inattention, such as being easily distracted and jumping from activity to activity, becoming bored with a task quickly, difficulty focusing attention or completing a single task or activity, trouble completing or turning in homework assignments, Losing things easily, not listening or paying attention when spoken to. A person with ADHD may also experience hyperactivity, such as fidgeting, having trouble sitting still, and nonstop talking. They may also display impulsive behaviors such as impatience, blurting things out, difficulty taking turns, or interrupting others.