At some point, you might have used ADD and ADHD interchangeably, but they’re more different than you think.
One word: hyperactivity
Both Dr. Lenard Adler and Michael Manos Ph.D. state that all attention deficit disorders are called ADHD, but Adler adds further that these cannot be classified as ADD, why? Because ADD is a type of ADHD.
ADD is actually the inattentive type of ADHD. ADD sufferers exhibit behaviors such as distractibility, having a limited attention span, and being forgetful; all without being hyperactive. The other types of ADHD are the hyperactive/impulsive type and the combined type (being inattentive, hyperactive, and impulsive all at once).
With modern approaches to mental health, there are varied ways to treat ADHD and its types, with options such as medication, a prompt lifestyle change, psychotherapy, education, and even a combination of all these methods.