Hyperactive-Impulsive ADHD: Signs, Symptoms, and Diagnosis

• OVERVIEW
• SYMPTOMS
• ADULTS
• CHILDREN
• WOMEN
• DIAGNOSIS
• TREATMENT
• MEDICATION

Hyperactive-impulsive ADHD is one of three recognised types of attention deficit hyperactivity disorder. Hyperactive-impulsive ADHD is characterised by visible, outward behaviours: difficulty staying still, acting before thinking, and a persistent sense of restlessness that can be hard to switch off.

Understanding the specific signs of hyperactive-impulsive ADHD and how the symptoms show up across different ages and contexts is an important step toward getting the right support.

Drawing on our clinical work at AuDHD Psychiatry, where we assess and support neurodivergent adults and children every day, this guide walks you through the key symptoms,  the process of getting a diagnosis of hyperactive ADHD, and what effective support can look like.

Key Takeaways

• Hyperactive-impulsive ADHD is one of the three subtypes of attention deficit/hyperactivity disorder. 
• ADHD is classified as hyperactive-impulsive in presentation when several impulsive and/or hyperactive symptoms of ADHD are present, but there are none or only a few inattentive-presentation symptoms.
• Symptoms of hyperactive ADHD include fidgeting, squirming and an inability to stay still, quiet, or seated in situations where these behaviours are expected.  
• Impulsive ADHD symptoms include impatience, an inability to wait their turn and a tendency to interrupt other people’s conversations and activities. 
• Get evaluated if you have hyperactive and impulsive symptoms. A clinical ADHD diagnosis means life-changing ADHD support in your university or workplace.

What Is Hyperactive-Impulsive ADHD?

Hyperactive-impulsive ADHD is one of the three subtypes or presentations of ADHD. Inattentive ADHD and combined ADHD are the two other types.

The classification of ADHD into types (hyperactive-impulsive, inattentive and combined) and levels of impairment (mild, moderate and severe) is done when someone who has ADHD traits is assessed and clinically diagnosed with ADHD. The clinician makes a judgment based on which ADHD symptoms are predominant. 

The diagnostic criteria laid down by the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) are clear about what constitutes hyperactive-impulsive ADHD.

Specifically, a diagnosis of hyperactive ADHD may be made if enough symptoms of hyperactive ADHD are present, but there are not enough inattentive symptoms detected.

Note: Other ADHD subtypes are similarly classified. Inattentive ADHD is called if there are enough inattentive symptoms but insufficient hyperactive-impulsive traits. Combined ADHD is the resulting classification if both the inattentive and hyperactive-impulsive criteria are met.

What Are the Symptoms of Hyperactive-Impulsive ADHD?

Technically speaking, the symptoms of hyperactive-impulsive ADHD consist of hyperactive ADHDsymptoms and impulsive ADHD symptoms.

The hyperactive symptoms of ADHD

The hyperactive symptoms of ADHD can be summed up as an inability to stay still. The specific signs of hyperactivity in ADHD include:

• Squirming when sitting down or fidgeting with hands and/or feet
• Restlessness, which is not only obvious but also difficult to control
• The appearance of being often ‘on the go’ or being ‘driven by a motor’
• Inability to quietly play and engage in leisure activities
• Inability to stay seated in settings where sitting down is expected
• Inappropriate or excessive talking, i.e., inability to remain quiet when silence is expected

Impulsive ADHD symptoms

Meanwhile, impulsive ADHD symptoms indicate impatience and an inability to control one’s impulses or urges. Impulsive ADHD traits include:

• Inability to wait their turn
• Interrupting other people’s conversations
• Intruding on other people’s activities
• Blurting out answers before questions are completed

How Do Clinicians Make a Diagnosis of Hyperactive-Impulsive ADHD?

Clinicians make a diagnosis of hyperactive-impulsive ADHD by uncovering impulsive and hyperactive symptoms of ADHD.

The process of ADHD diagnosis typically begins with a comprehensive ADHD assessment. If ADHD is identified, the next step is to discuss treatment options and the types of support that may help.

During the ADHD assessment phase, your clinician will use a comprehensive suite of tools and strategies, including clinical interviews and standardised rating scales.

At AuDHD, we ask you (and those close to you) to fill out pre-assessment questionnaires. This provides valuable context for the actual interview.

The one-to-one session with a specialist follows. The specialist reviews medical histories and behavioural patterns, putting together all the information they have collected.

Using the current diagnostic criteria (i.e., DSM-5), they conclude whether or not someone has ADHD and, if so, how to classify it: inattentive presentation, hyperactive-impulsive presentation, or combined inattentive/hyperactive-impulsive presentation.

What are the criteria for a diagnosis of hyperactive ADHD? 

The criteria for a diagnosis of hyperactive-impulsive ADHD require the presence of several impulsivity and hyperactivity symptoms. These symptoms:

• Need to have persisted for at least six months
• Should be present to a degree that is inconsistent with the person’s developmental level
• Must have a direct negative impact on the person’s social and academic/occupational activities
• Cannot be attributable solely to other causes (i.e., defiance, hostility, oppositional behaviour, or lack of understanding)

Additional criteria include:

• ADHD symptoms must have manifested before age 12.
• The symptoms are present in at least two settings (i.e., at home and in school).
• The symptoms demonstrably or evidently interfere with (or reduce the quality of) the person’s social, school, or work functioning.
• The symptoms are persistent, instead of occurring only or exclusively during the course of another developmental or psychotic disorder; they also cannot be better explained by another mental disorder.

Note: The number of ADHD symptoms required for a diagnosis varies by age.

For a diagnosis of ADHD in children and adolescents up to 16 years, six or more impulsive and hyperactive ADHD symptoms must be present. You can see this checklist of ADHD symptoms in children.

For a diagnosis of ADHD in adults and older adolescents (17 years and older), at least five hyperactive-impulsive ADHD symptoms must be persistent and apparent.

Frequently Asked Questions

Do You Have Hyperactive-Impulsive ADHD?

Hyperactive-impulsive ADHD is ADHD that presents primarily with hyperactive and impulsive behaviours. Those with this ADHD presentation find it difficult to stay still or control their impulses.

Do you have hyperactive-impulsive ADHD? Know once and for all and finally get the life-changing ADHD treatment and support you need. Start with an ADHD hyperactivity test from a reputable ADHD assessment clinic or book a full ADHD assessment with an ADHD specialist.

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