While you may have heard of Attention-Deficit Disorder, or ADD, as well as ADHD, based on today’s knowledge, ADD has become an outdated term. This is because ADD was previously used to describe the Predominantly Inattentive presentation in children, although we now know that that is simply another way to present and describe the same condition, which is ADHD. In other words, to say that a child has ADD would simply be saying that they present more as the Predominantly Inattentive type, which is why the term is no longer useful. Whether a child presents as Predominantly Inattentive or Predominantly Hyperactive-Impulsive, they would still be considered to have ADHD.