Attention-deficit/hyperactivity disorder (ADHD) is a brain disorder marked by an ongoing pattern of inattention and/or hyperactivity-impulsivity that interferes with functioning or development. ADHD is a group of behaviors. It is also called as attention deficit disorder (ADD). Attention deficit hyperactivity disorder (ADHD) is a behavioral disorder that includes symptoms such as inattentiveness, hyperactivity and impulsiveness. Inattentiveness is marked when a person wanders off task, lacks persistence, has difficulty in sustaining focus, and is disorganized. Hyperactivity is characterized when a person seems to move about constantly, including in situations in which...