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What's the difference between ADHD vs. ADD?

Learn the difference between ADD vs. ADHD, why the term changed, and how symptoms and diagnosis are understood today.

May 29, 2026

By Ryan DeCook, LCSWClinically reviewed by Alyssa Peechatka, Ph.D.

7 min read

By Ryan DeCook, LCSWClinically reviewed by Alyssa Peechatka, Ph.D.

You’ve probably heard a lot of people talking about ADHD lately. Therapists, online influencers, and friends may have a lot to say on the subject. Some of the things they might say are accurate, others not so much. Certain people may also be using the term ADD to describe the condition. Put simply, all of these different voices and labels can feel pretty confusing. 

Though some people use it still, the term ADD is actually outdated, with ADHD being the new accepted standard. If you want to learn more about ADHD for yourself or a loved one, understanding the terminology, signs, diagnosis, and treatment options can help you find the best way forward.

The difference between ADD and ADHD

ADD stands for attention deficit disorder, a term used in the 1980s before being replaced by ADHD. ADD is now referred to as attention deficit hyperactivity disorder, or ADHD, because it better accounts for all of the ways people experience this cluster of symptoms. 

ADD primarily highlighted the struggles with attention. ADHD is the current diagnosis used in the mental health field. It includes lack of attention, but now also highlights more of the hyperactivity or impulsivity that can be part of ADHD. 

There’s more flexibility with the term ADHD because it can describe someone’s inattention, someone’s hyperactivity, or both. ADHD can look a bit different for different people and the updated diagnosis helps identify more of those differences.

ADHD would not exist without the development of the previous term ADD, but at the end of the day, ADD is now an outdated term no longer used by healthcare professionals.

Why using the right term matters

Some people still use the term ADD since it’s familiar to them and has been around for a long time. While this might be easier for them, it’s best to not use the term any longer because it can cause misunderstandings or even delays in care.

If you’re doing your own research, talking to a healthcare provider, or seeking help, it’s recommended to use the term ADHD since it’s the most accurate term and is used by healthcare professionals. Using the term ADHD brings the most clarity, quality communication, and access to helpful treatment.

Signs of ADHD

ADHD presents with a range of signs, and not everyone experiences the same combination:

  • Difficulty paying attention or staying focused: Struggling to stay locked in on one specific thing can be tough, leading to easily getting distracted and drifting towards other thoughts or activities
  • Forgetfulness in daily activities: Forgetting plans, losing track of tasks, and misplacing items
  • Impulsivity or interrupting others: Quick responses to situations without giving it a second thought, saying the first thing that comes to mind, jumping into a conversation, and talking over others
  • Excessive talking or restlessness: Talking for long periods of time, discussing many different topics, restlessness, and an inability to stay still or quiet
  • Trouble organizing tasks or completing work: Difficulty finishing tasks or keeping track of things that need to get done
  • Easily distracted by external stimuli: Sounds, background events, or visual stimulation become major interruptions and easily distract
  • Difficulty following instructions: It can be hard or uncomfortable to listen closely or remember what was said
  • Frequent mistakes due to inattention: Carelessness and mistakes, especially in work, school, relationships, or daily activities

Types of ADHD

ADHD presents in three main types:

Inattentive type

The main sign of this type is difficulty staying focused for a sustained period of time. Someone with this type is not usually hyperactive. They struggle with being disorganized, forgetful, and easily distracted. Without hyperactivity, these signs can be easier to miss. This can look like someone is “out of it,” they’re losing items, they’re struggling to get things done, or unable to manage their time.

For a child this can look like distraction in school, struggling to pay attention to teachers or parents, losing toys or school supplies, avoiding homework, or forgetting to do chores.

For an adult this can look like careless mistakes at work, struggling to pay attention in conversations, missing important deadlines (work, paying bills, etc.), and losing phones, wallets, or keys. 

Hyperactive-impulsive type 

This type is more obvious and is often what’s spotted by others as ADHD, especially in children. This can look like restlessness, high levels of energy, trouble sitting still, talking a lot, making impulsive decisions, or struggling to wait. This can be seen and felt by teachers, coworkers, and loved ones. 

For a child this can look like running or playing in inappropriate situations, struggling to wait their turn with other kids, talking all the time, struggling to play quietly, or always being on the go. 

For an adult this can look like extreme restlessness or wearing others out with their activity levels, making important decisions (like accepting a job) without all the information, or interrupting others in conversations. 

Combined type 

When someone has both inattentive and hyperactive types, it’s called the combined type. People with this type of ADHD can be very active and restless while also struggling to focus, stay organized, and pay attention. The combined type reflects the fullest picture of ADHD.

ADHD diagnosis and treatments

An ADHD diagnosis is based on the Diagnostic and Statistical Manual of Mental Disorders (DSM-5-TR) for both children and adults. It’s typically diagnosed by a pediatrician, psychiatrist, or licensed therapist. 

ADHD cannot be diagnosed from one test, however. It’s usually diagnosed through a process of written assessments, questions, history of signs, and checking with the DSM-5-TR criteria. 

For children, diagnosis often involves discussions with others in the children’s lives such as parents or teachers. These adults have a consistent view of the child’s behavior and can share information that gets used as part of the diagnosis process. 

Once a diagnosis is made, there are several treatment options. The most common options include: 

Cognitive behavioral therapy (CBT): CBT is one of the most well-researched and strongly supported treatments for teen and adult ADHD. The cognitive side helps people spot unhelpful thoughts that drive procrastination, frustration, and low self-esteem, then build a more balanced outlook, reducing those difficult feelings. The behavioral side teaches practical skills like chunking tasks, scheduling, and using reminders. CBT works best for people who want structure, homework, and concrete tools.

Behavioral therapy: This type of therapy works best with children and teens. It often involves parents (parent training in behavioral management, or PTBM), teachers (behavioral classroom management, or BCM), and other trusted adults. These approaches reduce environmental challenges and reward positive behaviors, with a strong focus on shaping the child's surroundings to set them up for more success. 

Medication: ADHD affects how the brain works, and medication can help reduce symptoms. That said, there are different medication options for treating ADHD. Medication is recommended as a treatment option for both adults and children, while behavioral interventions are recommended to be tried first or in combination with medications for children. 

Both stimulant and non-stimulant medications are treatment options. Research has shown stimulants, which are more commonly used, to have a higher effect on ADHD symptoms than non-stimulants. They work by boosting chemicals in the brain that help with focus and self-control. Non-stimulant medications work in a different way in the brain and are usually recommended when stimulants don't work well or cause unwanted side effects.

When considering medications, you should consult with a professional who is licensed to prescribe medications and specializes in treating ADHD. 

Mindfulness-based therapy: Mindfulness-based approaches teach present-moment awareness, accepting thoughts and emotions without judgment, and techniques for regulating attention. This helps people zoom out and notice when their focus drifts or emotions spike. 

Emerging research supports this approach for managing ADHD symptoms. It can be a strong secondary option alongside CBT or medication, but isn’t recommended as a replacement for those treatments.

School or workplace accommodations: Accommodations are changes made to a school or work setting that help someone with ADHD perform better without changing the actual task.

For a child in school, this might look like preferential seating, extra time on tests or assignments, frequent breaks, small-group instruction, note-taking help, and written directions. School accommodations often require a formal diagnosis from a healthcare professional before they can be set up, but the process can vary. It’s a good idea to speak with your child’s teachers or school counselors to understand the best path to in-school support. 

For an adult in the workplace, examples include a quieter workspace, noise-canceling headphones, flexible scheduling, written instructions, task breakdowns, regular check-ins, and productivity tools.

Lifestyle changes: A range of lifestyle changes can work to alleviate symptoms of ADHD. Going to bed and waking up at the same time every day — and getting enough sleep — can improve focus and behavior for people with ADHD. Getting active with exercise like running, weightlifting, or sports a few times a week can help with managing symptoms. Finally, keeping spaces tidy, following simple daily routines, and reducing distractions may also help manage symptoms alongside other treatments.

Connect with a licensed mental health professional

If the signs of ADHD resonate with you, or you’re curious to learn more about the details of ADHD, it might be time to speak with a mental health professional. They can provide a formal assessment, explain the signs and terms of ADHD in more detail, and offer helpful treatment if you find out you have an ADHD diagnosis.

Headway offers a directory to find therapists and psychiatrists who specialize in ADHD and accept insurance. You can filter your search by your preferences to find the right fit — plus, you can easily verify your insurance coverage, see pricing before you start, view a provider’s availability, and book instantly with them. Start your search today.

This content is for general informational and educational purposes only and does not constitute clinical, legal, financial, or professional advice. All decisions should be made at the discretion of the individual or organization, in consultation with qualified clinical, legal, or other appropriate professionals.

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