Attention deficit hyperactivity disorder (ADHD) is also commonly referred to as ADD. Those with the disorder exhibit long-term excessive distractibility, impulsivity, and/or hyperactivity. The disorder affects both children and adults in their daily lives at school, home, work or social settings. ADHD is likely caused by biological factors which influence neurotransmitter activity in certain parts of the brain. Research suggests that genetic is a factor. Treatment may involve medication, behavior and cognitive therapies that help to develop coping skills and adaptive behaviors. (source: Attention Deficit Disorder Association)