What are the differences between ADD and ADHD?

ADHD is the diagnostically “correct” name, and although the media and pop culture frequently refer to it as ADD, they are discussing the same condition. There is also some confusion because people often feel that if they are not hyperactive than the “H” in ADHD does not apply and thus think that ADD is a better term. In actuality, ADHD has several sub-types including one that is “inattentive only” and does not include hyperactive symptoms.