ADHD in Men: Signs, Diagnosis and Getting Help

Short answer: ADHD in men involves the same core symptoms as in anyone else: inattention, hyperactivity and impulsivity. In adult men these can show up as inner restlessness, impatience, impulsive decisions, disorganisation and quick changes in mood.¹² Boys are diagnosed with ADHD more often than girls, yet ADHD is also underdiagnosed in adults,³ and a diagnosis may not come until the demands of adult life make symptoms harder to manage.² If this sounds familiar, a GP is a good first step.

Signs and symptoms of ADHD in men

ADHD isn’t a different condition in men. Everyone is assessed against the same 18 symptoms, split into inattention and hyperactivity-impulsivity.⁴ What differs is how those symptoms look in adult life, and how easily other people notice them.

Restlessness that’s more inside than out

In adults, visible hyperactivity may ease or turn into a sense of extreme restlessness.⁵ Adults may feel restless and unable to relax,² or driven to stay busy, and may fidget, feel impatient or find it hard to stay seated.¹

Impulsivity, risk-taking and driving

Impulsivity means making decisions or acting without thinking through the consequences.⁵ In adults it can look like overspending, risk-taking, conflict with other people, interrupting and talking a lot.⁶ ADHD can also affect driving. The Australian ADHD Guideline recommends that clinicians explain its possible impacts on driving when it isn’t treated, along with the increased risk of substance misuse and possible effects on relationships.⁷

Work and money

People with ADHD may find it hard to keep a job or maintain relationships,¹ and meeting deadlines and managing money can be a struggle.⁶ In a US study, people who had ADHD as children had lower employment rates as adults and earned about a third less.⁸

Irritability and emotional reactions

Difficulty regulating emotions is common in ADHD at every age and adds substantially to the problems it causes.⁹ In adults it can show up as rapid changes in mood,¹ or as frustration that flares quickly and fades just as fast. Irritability isn’t specific to ADHD, though. Losing your temper over small things can also be a sign of a mental health problem,¹⁰ so it’s worth raising with a GP either way.

Alcohol and other drugs

Adults with ADHD may have problems with alcohol or other drugs,³ and substance use disorders are among the conditions most often seen alongside adult ADHD.² If you’re worried about your drinking or drug use, the National Alcohol and Other Drug Hotline (1800 250 015) offers free and confidential support. Read more in ADHD and alcohol.

Is ADHD more common in men?

The difference is clearest in childhood. In Australia’s 2013–14 national child and adolescent mental health survey, 10.9% of boys and 5.4% of girls aged 4–11 had ADHD, as did 9.8% of boys and 2.7% of girls aged 12–17.² The Australian ADHD Guideline notes that the difference narrows somewhat in adulthood.² Across all ages, a Senate committee report says ADHD is diagnosed two to three times more often in males than females, citing an estimated prevalence in Australia of 4.9% of males and 1.5% of females.¹¹

A higher diagnosis rate doesn’t necessarily mean males are more likely to have ADHD. Boys more often show hyperactive, outward behaviour that gets noticed, while the inattentive symptoms more typical of girls can be less obvious.⁵ See ADHD in women.

What the Australian data shows

Detailed national data by sex comes from the Australian Institute of Health and Welfare (AIHW), which tracks ADHD medicines dispensed under the PBS. It reflects who has been diagnosed and treated, not how many people have ADHD.

• Males under 18 have had higher rates than females in every year reported. In 2023–24, 9% of males aged 12–17 were dispensed an ADHD medicine, compared with 5% of females.¹²
• From 2018–19 to 2023–24, the rate for males more than doubled, from 11 to 26 per 1,000 people, while the rate for females rose five-fold, from 4 to 19 per 1,000.¹²
• Among adults the pattern has reversed. Rates for women aged 18–24 and 25–44 overtook those for men for the first time in 2022–23, and by 2023–24 adult rates were higher for women than for men.¹²

So boys are still more likely than girls to be treated for ADHD, but adult men are now treated at lower rates than adult women.

Undiagnosed ADHD in men: why it gets missed

Being male doesn’t mean ADHD will be picked up in childhood. Reasons it can be missed include:

• Less visible symptoms. Many children and adults with ADHD may not show the most obvious hyperactive or impulsive symptoms, and the Australian ADHD Guideline asks clinicians to keep this in mind.⁷ A boy who daydreamed and lost things but didn’t disrupt the class could easily be overlooked.
• Coping until life gets busier. Symptoms start before age 12, but a diagnosis may not come until growing demands for independence make their impact more obvious.² A more complex job, a new baby or running a household can be the tipping point.
• Being dismissed. Some people who suspect ADHD are dismissed by health workers or family, or held back by misperceptions of ADHD.¹³
• Other conditions taking the spotlight. ADHD can be overlooked when another condition is present.²

A Senate committee report notes that learnt behaviours such as masking, people’s circumstances and access to healthcare mean many people are diagnosed much later in life, or not at all.¹¹ Overall, ADHD in adults is thought to be substantially underdiagnosed.¹⁴

Why men may not seek help

In Australia, men can feel pressure to be tough and self-reliant and not to show emotion, and meeting those expectations all the time can make it difficult or embarrassing to ask for help.¹⁰ Perceived stigma about an ADHD diagnosis can also put people off seeking an assessment.¹³

An assessment is less about a label than about understanding why some things have been harder than they should be, and what might help.

You don’t need a diagnosis to get support. MensLine Australia (1300 78 99 78) offers counselling for men, and Lifeline (13 11 14) offers crisis support. In an emergency call 000.

Conditions that often come with ADHD

Other conditions are common: up to 80% of adults with ADHD have at least one additional mental health disorder, most often depression, bipolar disorder, anxiety or a substance use disorder.² Learning difficulties and autism can also occur alongside ADHD, and obstructive sleep apnoea is more common in people with ADHD.³ Sleep problems are frequent too, with studies reporting insomnia in 43–80% of adults with ADHD.¹⁵

Because symptoms overlap, an assessment should also look for other conditions, and for alcohol or drug use, that might be contributing.¹ If anxiety is part of the picture, see ADHD and anxiety.

How adult ADHD assessment works

There is no single blood test or brain scan for ADHD: diagnosis involves a comprehensive assessment by a suitably qualified health professional.¹ For people aged 17 and over, at least five symptoms of inattention and/or hyperactivity-impulsivity are needed,⁵ with several symptoms present before age 12⁴ and symptoms causing problems in at least two settings, such as work and home.³

An adult assessment can include:

• a detailed interview about your symptoms and their impact on work, relationships and daily life¹
• questionnaires such as the World Health Organization’s Adult ADHD Self-Report Scale¹⁶
• evidence that symptoms began in childhood, such as school reports³
• input from a partner, family member or friend¹
• checking for other conditions that could explain or add to your symptoms.¹

Who can diagnose ADHD depends on your state or territory. In Queensland, GPs can now diagnose and treat ADHD in adults.¹⁷ See who can diagnose ADHD in Australia.

The Australian ADHD Guideline recommends treatment that fits the person’s needs and goals and combines approaches such as education about ADHD, practical strategies, psychological therapy and, where appropriate, medication.⁷ Your doctor or pharmacist can explain the options that suit you.

Frequently asked questions

What are the signs of ADHD in men?

The core symptoms are the same as for anyone with ADHD: inattention, hyperactivity and impulsivity. In adult men they can show up as inner restlessness, impatience, interrupting, impulsive decisions, disorganisation at work and home, and quick changes in mood.

Is ADHD more common in men than women?

It is diagnosed more often in boys than girls, but the gap narrows in adulthood, and in Australia adult women are now treated for ADHD at higher rates than adult men. Girls and women are more likely to be overlooked, so diagnosis figures don’t tell the whole story.

Can a man be diagnosed with ADHD as an adult?

Yes. ADHD starts in childhood, but many people aren’t diagnosed until adulthood. An adult assessment looks at your current symptoms and for evidence that several symptoms were present before age 12.

Why does ADHD in men often go undiagnosed?

Quieter, inattentive symptoms are easy to miss, people can be dismissed or held back by misperceptions of ADHD, and some men put off asking for help. ADHD can also become obvious only when adult life gets more demanding.

Can ADHD cause anger or irritability?

Difficulty regulating emotions is common in ADHD, so some adults notice quick changes in mood or frustration that flares up fast. Irritability has other possible causes too, including other mental health problems, so it’s worth discussing with a GP.

Where can men get support?

Start with your GP. MensLine Australia (1300 78 99 78) offers counselling for men, Lifeline (13 11 14) offers crisis support, and the National Alcohol and Other Drug Hotline is 1800 250 015. In an emergency call 000.

Next steps

Read ADHD symptoms in adults and how to get an ADHD assessment in Australia, or start with the free ADHD self-assessment.

This article is general information only and is not medical advice. Only a qualified health professional can diagnose ADHD. ADHD GP is a private telehealth clinic staffed by AHPRA-registered Australian GPs.

Book your ADHD assessment

References

1. Better Health Channel (Victorian Government). ADHD — adults. 2026. www.betterhealth.vic.gov.au — About 7 in 10 children continue to experience ADHD symptoms as adults; treatment can include education, psychological support, coaching, practical strategies and medication.
2. Australian ADHD Professionals Association. About ADHD (Australian ADHD Guideline). 2022. adhdguideline.aadpa.com.au — ADHD affects 6–10% of Australian children and 2–6% of adults; heritability 70–80%; symptoms begin before 12 though diagnosis may come later; 60–86% persist into adulthood; inattentive presentation most prevalent; up to 80% of adults have another mental health condition; describes executive-function, brain-maturation and dopamine differences.
3. healthdirect (Australian Government). Attention deficit hyperactivity disorder (ADHD). 2025. www.healthdirect.gov.au — ADHD is a neurodevelopmental condition that begins in early childhood; around 1 in 20 people in Australia has ADHD; it is partly genetic; an adult diagnosis requires evidence that symptoms began in childhood; learning difficulties can occur alongside it.
4. American Psychiatric Association. Highlights of Changes from DSM-IV-TR to DSM-5. 2013. www.psychiatry.org — DSM-5 kept the same 18 ADHD symptoms but replaced subtypes with presentation specifiers, required several symptoms before age 12 (previously 7) and set a five-symptom threshold for adults.
5. American Psychiatric Association. What is ADHD?. 2022. www.psychiatry.org — ADHD is one of the most common mental disorders affecting children; symptoms must be present before age 12; an estimated 8.4% of children and 2.5% of adults have ADHD.
6. Healthy Male (funded by the Australian Government). Adult ADHD diagnosis in Australia: What you need to know. 2026. healthymale.org.au — In adults, impulsivity can look like excessive spending, risk-taking, conflict with others, interrupting and talking excessively; managing finances and meeting work deadlines can be difficult.
7. Australian ADHD Professionals Association. Australian ADHD Guideline — summary of recommendations. 2022. adhdguideline.aadpa.com.au — Medication is the most effective treatment for core symptoms, with non-medication treatments adding support (3.1.1); diagnosing clinicians should be registered and trained in ADHD assessment (2.1.1); the diagnosis must be confirmed before starting medication (5.1.2); CBT should be offered to adults (4.2.11); stimulants are first-line for impairing adult ADHD, with heart rate, blood pressure, weight, sleep, mood and anxiety monitored during titration; co-occurring conditions get best-practice treatment.
8. Fletcher JM. The effects of childhood ADHD on adult labor market outcomes. Health Economics. 2014. PubMed PMID 23427026 — Childhood ADHD associated with a 10–14 point reduction in employment and an earnings reduction of about 33%.
9. Shaw P, Stringaris A, Nigg J, Leibenluft E. Emotion dysregulation in attention deficit hyperactivity disorder. American Journal of Psychiatry. 2014. PubMed PMID 24480998 — Emotion dysregulation is prevalent in ADHD throughout the lifespan and a major contributor to impairment.
10. healthdirect (Australian Government). Mental health resources for men. 2024. www.healthdirect.gov.au — Men may feel pressure to be tough, self-reliant and not show emotion, which can make it difficult or embarrassing to seek help; losing your temper over small things can be a sign of a mental health problem.
11. Parliament of Australia — Senate Community Affairs References Committee. Assessment and support services for people with ADHD — Chapter 1. 2023. www.aph.gov.au — ADHD occurs in about 6–10% of Australian children and adolescents and 2–6% of adults; heritability is estimated at 70–80%; Deloitte estimated 814,500 Australians living with ADHD in 2019 at a cost of $20.42 billion.
12. Australian Institute of Health and Welfare. ADHD medications dispensed over time. 2025. www.aihw.gov.au — PBS-dispensed ADHD medication rose from 2 patients per 1,000 population in 2004–05 to 22 in 2023–24; over 4.6 million prescriptions to just under 600,000 patients in 2023–24, 87% psychostimulants. From 2018–19 to 2023–24 the rate for females rose five-fold (4 to 19 per 1,000) while the rate for males more than doubled (11 to 26); by 2023–24 rates for adults were higher in females than males.
13. Parliament of Australia — Senate Community Affairs References Committee. Assessment and support services for people with ADHD — Chapter 3: barriers to assessment and diagnosis. 2023. www.aph.gov.au — Almost all adult ADHD assessment and diagnosis in Australia is done through the private sector, and cost is a barrier to diagnosis. The committee heard that gender bias has led to under- and misdiagnosis of ADHD in girls and women, who are commonly misdiagnosed with other mental health conditions first and often learn to mask their symptoms.
14. Ginsberg Y, Quintero J, Anand E, Casillas M, Upadhyaya HP. Underdiagnosis of attention-deficit/hyperactivity disorder in adult patients: a review of the literature. Primary Care Companion for CNS Disorders. 2014. PubMed PMID 25317367 — Review of the evidence that adult ADHD is substantially underdiagnosed.
15. Wynchank D, Bijlenga D, Beekman AT, Kooij JJS, Penninx BW. Adult Attention-Deficit/Hyperactivity Disorder (ADHD) and Insomnia: an Update of the Literature. Current Psychiatry Reports. 2017. PubMed PMID 29086065 — Studies report insomnia in 43–80% of adults with ADHD.
16. Kessler RC, Adler L, Ames M, et al. The World Health Organization Adult ADHD Self-Report Scale (ASRS): a short screening scale for use in the general population. Psychological Medicine. 2005. PubMed PMID 15841682 — Development and validation of the ASRS, including the six-item Part A screener.
17. Queensland Health. Prescribing psychostimulants for ADHD — expanded prescribing rights. 2025. www.health.qld.gov.au — Queensland GPs can diagnose and treat adult ADHD, including prescribing psychostimulants, under the expanded prescribing rights in force from December 2025.

Sources were last checked on 5 October 2026. See all sources used on this site on our Sources page.