Neurobehavioral developmental disorder such as the Attention Deficit Disorder (ADD) or Attention Deficit Hypertention Disorder (ADHD) are most common to children in preschool. Key behaviors of this disorder are inattention, hyperactivity and impulsivity. Though specific cause of the disorder is not yet known but genetics, diet and social and physical environment are said to be factors contributing to the child’s behavior. However, this disorder can be treated through changing of lifestyle, counselling and medication in ADD ADHD drug treatment centers. It is best to have your kids with this disorder treated at an earlier stage before they have to live with them through adulthood.