The three types of ADHD
The DSM-5-TR describes three ADHD presentations: predominantly inattentive, predominantly hyperactive-impulsive, and combined. They share the same underlying condition but differ in which symptoms stand out, and the presentation can shift as you get older.
Clinically reviewed · Updated October 2, 2026
ADHD is one condition, but it does not look the same in everyone. The DSM-5-TR, the manual US clinicians use to diagnose mental health conditions, describes three presentations of ADHD (American Psychiatric Association, 2022). Knowing which one fits you helps explain why your struggles may look nothing like a classmate’s or a sibling’s.
This page gives a plain overview of all three, explains why a person’s presentation can change, and describes how our online assessment checks for each one. Each presentation also has its own detailed page.
The two symptom domains
Every ADHD diagnosis is built from two lists of symptoms. One list covers inattention: nine symptoms such as losing track of details, drifting off during conversations, struggling to finish tasks, and forgetting daily responsibilities.
The other covers hyperactivity and impulsivity: nine symptoms such as fidgeting, feeling driven by a motor, talking excessively, interrupting, and having trouble waiting.
For adults aged 17 and older, at least five symptoms from a domain must be present to meet the threshold for that domain. The symptoms must have lasted at least six months, several must have been present before age 12, and they must cause real problems in two or more settings, such as work and home.
Which domains you meet the threshold for decides your presentation.
Predominantly inattentive presentation
You meet the threshold for inattention but not for hyperactivity-impulsivity. This is the presentation people used to call ADD. It tends to be quiet: missed deadlines, lost keys, zoning out in meetings, and a constant feeling of working harder than everyone else for the same result.
Because nothing about it is disruptive, it is the presentation most often overlooked, particularly in girls and women. Read more about inattentive ADHD.
Predominantly hyperactive-impulsive presentation
You meet the threshold for hyperactivity-impulsivity but not for inattention. In children this is the most visible form: running, climbing, blurting out answers. In adults the restlessness usually moves inside, showing up as an inability to relax, impatience, impulsive decisions, and talking over people.
This is the least common presentation in adults, partly because many people who had it as children develop inattentive symptoms later and shift to combined presentation. Read more about hyperactive-impulsive ADHD.
Combined presentation
You meet the threshold in both domains. This is the most frequently diagnosed presentation overall. People with combined ADHD deal with the full range of difficulties at once: trouble focusing and organizing alongside restlessness, impulsivity and strong emotional reactions.
Read more about combined ADHD.
Why your presentation can change
The DSM-5-TR deliberately says “presentation” rather than “subtype.” A subtype sounds fixed. A presentation describes how ADHD is showing up right now, and that can shift with age, life demands and coping strategies.
The most common shift is from combined to predominantly inattentive. Overt hyperactivity tends to fade through adolescence, while inattention and disorganization usually persist. An adult who was a bouncing, impulsive child may now sit still in meetings and simply struggle to follow them.
This matters for diagnosis. A good adult assessment looks at your whole history, not just the symptoms you have today. It also means a label from childhood is not necessarily the one that fits you now.
How ADHD looks across the lifespan
Roughly 4.4 percent of US adults meet criteria for ADHD (Kessler et al., 2006). Many were never diagnosed as children, especially women and people whose symptoms were mostly inattentive. Adult symptoms tend to center on time management, follow-through, emotional regulation and inner restlessness. Our guide to adult ADHD symptoms covers this in detail, including why late diagnosis is so common.
Children show symptoms across school, home and friendships, and boys are diagnosed about twice as often as girls (CDC). Our guide to child ADHD symptoms is written for parents. Note that our service assesses adults only, so that page points families to pediatric and school-based options.
Conditions that overlap with ADHD
Anxiety, depression, sleep problems and trauma can all cause poor concentration, restlessness and forgetfulness. They also commonly occur alongside ADHD.
Any careful evaluation has to consider whether another condition explains your symptoms better, or whether both are present. Our assessment includes screening questions for these conditions so your clinician can see the full picture.
How we assess for all three presentations
Our online assessment is for adults 18 and older. You complete a structured questionnaire that covers all 18 DSM-5-TR symptoms, your childhood history, and how symptoms affect different areas of your life.
A state-licensed clinical psychologist reviews your responses within 48 hours, then meets you for a 30-minute video appointment to ask follow-up questions and confirm the diagnosis.
If you meet criteria, your written report names your presentation and can be used with prescribers, employers under the ADA, and schools under Section 504. We diagnose but do not prescribe. You can read how it works, check cost and insurance, or start the assessment when you are ready.
If you are in crisis or thinking about harming yourself, please call or text 988 to reach the Suicide and Crisis Lifeline.
Common questions
Is ADD a different condition from ADHD?
No. ADD was an older term for what is now called ADHD, predominantly inattentive presentation. Since 2013 the DSM has used ADHD as the single diagnosis, with three presentations underneath it.
Can my ADHD type change over time?
Yes. The DSM-5-TR uses the word presentation rather than subtype because the pattern often shifts. Many people diagnosed with combined ADHD as children look predominantly inattentive by adulthood, as visible hyperactivity fades and inattention remains.
Which type of ADHD is most common in adults?
Combined presentation is the most commonly diagnosed overall. Among adults, predominantly inattentive presentation is also very common and is the one most often missed, especially in women. Predominantly hyperactive-impulsive presentation is the least common in adults.
Does my ADHD type change how I would be treated?
The main treatments are similar across presentations, but your specific symptom profile shapes what to focus on. Someone with mostly inattentive symptoms may benefit from organizational and time-management support, while someone with prominent impulsivity may focus more on emotional regulation and pausing before acting.
Does your assessment tell me which type I have?
Yes. Our evaluation scores both the inattentive and hyperactive-impulsive symptom domains against DSM-5-TR criteria. If you meet criteria for ADHD, your written report states which presentation applies.