Q: What’s the difference between ADD and ADHD?

A: ADD (Attention Deficit Disorder) was a term formerly used to designate Attention

Deficit Disorder (ADD) distinct from Attention Deficit Disorder Hyperactivity Disorder (ADHD). Sometimes AD/HD will still be referred to in a shorthand fashion as “ADD”.

The terms ADD and ADHD have been replaced in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) by the single term AD/HD.  AD/HD as currently viewed is comprised of three sub-variants. One of these is AD/HD with predominantly inattention. This sub-variant is what was previously simply called “ADD”.

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