ADHD or ADD: What's the Difference and Which Term Is Correct?

Sara Haqqi
August 28, 2026

2min read

ADD (Attention Deficit Disorder) was the official diagnosis from 1980 to 1987. In 1987, the name changed to ADHD (Attention Deficit Hyperactivity Disorder) to better reflect that hyperactivity is a main symptom for many people with the condition [1]

By 1994, the DSM-IV (diagnostic manual for psychological conditions) established three subtypes that we still use today:

- Predominantly Inattentive (what was once called ADD): trouble focusing, forgetfulness, disorganization 

- Predominantly Hyperactive-Impulsive: restlessness, fidgeting, impulsive decisions 

- Combined: symptoms of both types, and the most common presentation 

Why Does the Distinction Matter?

Understanding your presentation type isn't just about terminology. It shapes treatment. People with Inattentive type often benefit from organizational systems and external reminders [2], while those with Hyperactive type may need physical outlets and impulse-control strategies.

Think about your symptoms, do you struggle more with focus, hyperactivity, or both? Your answer points to your presentation type.

What Research Says About the Types

A 2001 study using brain scans found that people with the Hyperactive-Impulsive or Combined presentations showed reduced N-acetylaspartate (NAA) levels in the left prefrontal cortex, while people with the Inattentive type did not show this same pattern [3]. This suggests the different presentations may have distinct neurobiological underpinnings, not just different behaviors.

The Case for "Attention Regulation Disorder"

There's a growing movement advocating for renaming ADHD to Attention Regulation Disorder (or similar terms like Emotion and Attention Regulation Disorder) [4]. The argument centers on two key points:

First, "deficit" is inaccurate and stigmatizing. Many with ADHD don't lack attention, they have too much of it, often experiencing it as hyperfocus. The challenge is regulating where that attention goes, especially when tasks don't feel interesting. Second, emotional dysregulation is central to ADHD but completely missing from the current name. Intense, overwhelming emotions are among the most challenging aspects of the condition, yet the name focuses narrowly on attention and hyperactivity. 

This reframing could reduce stigma and help individuals better understand their experiences beyond just distractibility. Let's see if we move from ADHD to EARD as we did from ADD…

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Sara Haqqi
Scientific Advisor

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