Types of ADHD
The DSM-5 (psychiatry’s diagnostic manual) recognizes three presentations of ADHD. Knowing which one applies to you helps you find more effective strategies.
1. Predominantly Inattentive ADHD
Formerly called "ADD" (without hyperactivity)
Characterized mainly by difficulty sustaining attention, organizing tasks, following instructions and remembering commitments. Motor hyperactivity is absent or minimal — which often leads to underdiagnosis, especially in women and adults.
Main symptoms:
- •Forgets items needed for tasks (keys, documents, phone)
- •Gets distracted easily by external stimuli or internal thoughts
- •Misses details — makes careless mistakes
- •Trouble following long instructions or finishing tasks
- •Seems not to be listening even when spoken to directly
- •Avoids tasks that require sustained mental effort
- •Frequently loses the thread of a conversation or a train of thought
2. Predominantly Hyperactive-Impulsive ADHD
Less common in adults — hyperactivity tends to decrease with age
Marked by excessive motor activity, difficulty sitting still and impulsive behavior. Inattention is present to a lesser degree. It’s the most visible presentation and, for that reason, has historically been diagnosed more often in boys.
Main symptoms:
- •Motor restlessness: fidgets with hands or feet, squirms in their seat constantly
- •Trouble staying seated in situations that call for it
- •Runs or climbs in inappropriate situations (children); a feeling of being "driven by a motor" (adults)
- •Talks excessively
- •Answers before a question is finished
- •Trouble waiting their turn
- •Interrupts other people’s conversations or activities
3. Combined Type ADHD
The most prevalent type — about 50–70% of diagnoses
Shows significant symptoms of both inattention and hyperactivity-impulsivity. It’s the most studied presentation and often the most impactful day to day, since it combines the challenges of both types.
Can the type change?
Yes. It’s common for hyperactivity to decrease in adulthood while inattention symptoms persist. Someone diagnosed with the combined type in childhood may present as predominantly inattentive as an adult — which doesn’t mean the ADHD "improved," just that how it shows up changed.
Not sure which type applies to you?
Take our free self-check and see which symptoms resonate most with your experience.
Take the ADHD testFrequently asked questions
What is the hardest type of ADHD to diagnose?
The inattentive type, because it doesn’t come with visible disruptive behavior. Children with this profile are often called "daydreamers" or "lazy" instead of being referred for an evaluation.
How do I know my type without a diagnosis?
You can get a sense from your most prominent symptom pattern — but a formal diagnosis requires a professional evaluation.
Does the type affect treatment?
Indirectly. The base treatment (medication plus behavioral strategies) is similar across all types, but the most effective strategies can vary. People with predominantly inattentive ADHD tend to benefit more from external organization systems; people with predominantly hyperactive ADHD, from nervous-system regulation techniques.