ADD vs ADHD: What's the Difference?
If you've wondered about the difference between ADD and ADHD, you're not alone. These terms are often used interchangeably, but there's an important distinction—and a reason why mental health professionals no longer use "ADD."
Learn more in our complete ADHD guide →
The Short Answer
ADD (Attention Deficit Disorder) is an outdated term. The current medical terminology uses only ADHD (Attention Deficit Hyperactivity Disorder) with three presentations:
- ADHD Predominantly Inattentive Presentation — What used to be called "ADD"
- ADHD Predominantly Hyperactive-Impulsive Presentation
- ADHD Combined Presentation
Why the Change?
The American Psychiatric Association updated the terminology in 1987 (DSM-III-R) and again in 2013 (DSM-5):
- Research showed hyperactivity exists on a spectrum
- "ADD" suggested a fundamentally different condition, which isn't accurate
- All presentations share underlying neurological features
- The umbrella term allows for changing symptoms over time
ADHD Predominantly Inattentive (Former "ADD")
- Difficulty sustaining attention
- Easily distracted by unrelated thoughts
- Trouble following through on instructions
- Difficulty organizing tasks and time
- Losing things frequently
- Forgetfulness in daily activities
- Avoiding tasks requiring sustained mental effort
- Not appearing to listen when spoken to
- More commonly diagnosed in girls/women
- Often missed because symptoms are less disruptive
- May be misdiagnosed as anxiety or depression
ADHD Predominantly Hyperactive-Impulsive
- Fidgeting, squirming, restlessness
- Difficulty staying seated
- Running or climbing inappropriately (children)
- Talking excessively
- Blurting out answers
- Difficulty waiting turns
- Interrupting others
- More commonly diagnosed in boys/men
- More visible, often identified earlier
- May decrease with age but rarely disappears
ADHD Combined Presentation
Features significant symptoms from both categories. This is the most common presentation.
Why It Matters
- Get accurate diagnosis
- Access appropriate treatment
- Find relevant resources
- Connect with community
The name doesn't change the experience—but accurate terminology helps you get the support you need.