ADHD in Adults

ADHD (Attention-Deficit/Hyperactivity Disorder) is a neurodevelopmental condition characterised by inattention, impulsivity, and hyperactivity. It begins in childhood, and for many people it continues into adulthood — sometimes unrecognised until study, work, or family life make the difficulties harder to manage. ADHD is estimated to affect around 2–6% of Australian adults.

In adults, ADHD often looks different from the hyperactive child many people picture. Restlessness may be felt more internally, and the main challenges are often with focus, organisation, time management, and emotional regulation. Left unrecognised, ADHD can affect work, relationships, and self-esteem.

This page is about ADHD in adults. For assessments, see our adult ADHD assessment page. For young people, see our ADHD assessment for children & teens.

Common signs of ADHD in adults include:

• Inattention: difficulty concentrating, losing track of tasks, forgetfulness, or being easily distracted.
• Disorganisation: difficulty planning, prioritising, managing time, or meeting deadlines.
• Restlessness: an inner sense of being "on the go", fidgeting, or difficulty relaxing.
• Impulsivity: impatience, interrupting, or making hasty decisions.
• Emotional regulation: frustration, irritability, mood swings, or feeling easily overwhelmed.

Everyone experiences some of these at times. ADHD is considered when the pattern is long-standing, several symptoms were present before the age of 12, and the difficulties affect day-to-day functioning in more than one area of life, such as work, home, and relationships.

The exact causes of ADHD remain uncertain; however, we recognise a combination of genetic predisposition and altered dopamine transport in key brain areas linked to memory and learning. Other biological factors also contribute. Some experts suggest societal changes play a role, citing stimulus overload, lack of exercise, performance pressures, and shifting family dynamics. Research on these theories is limited. Potential risk factors include maternal smoking or alcohol consumption during pregnancy, preeclampsia, and complications during birth.

ADHD can affect many areas of adult life:

• Work and study: missed deadlines, difficulty staying on task, or frequent changes of job or course.
• Relationships: forgetfulness, impulsivity, or emotional reactivity can place strain on partners, family, and friends.
• Daily life: difficulty with finances, household tasks, appointments, and routines.
• Mental health: ADHD commonly co-occurs with anxiety, depression, and substance use, and can affect self-esteem.

Diagnosing ADHD in adults involves a thorough assessment by a psychiatrist or other qualified clinician. The process may include:

1. Clinical assessment: whether symptoms meet DSM-5 criteria — for adults, at least five symptoms of inattention and/or hyperactivity-impulsivity, present for at least six months — and how they affect work, relationships, and daily life.
2. Developmental history: evidence that symptoms were present in childhood, which may draw on school reports or input from family, with consent.
3. Rating scales: validated adult questionnaires completed by you and, where appropriate, someone who knows you well.
4. Ruling out other explanations: anxiety, depression, sleep difficulties, and substance use can overlap with ADHD symptoms and are considered as part of the assessment.

See our adult ADHD assessment page for what to expect.

Treatment for adult ADHD is individualised and may include:

• Education about ADHD and how it affects you.
• Medication, where appropriate, considered carefully with regular review.
• Psychological support, such as cognitive behavioural therapy (CBT), to build skills in time management, organisation, and emotional regulation. Combining medication with psychological strategies is often recommended.
• Practical strategies for work, study, and home.
• Treatment of co-occurring conditions such as anxiety or depression, where present.

• We offer telehealth and in-person consultations to establish the important diagnosis of ADHD.
• Thorough assessment and customised treatment regimens to successfully control symptoms of ADHD.
• Quick appointment bookings to meet your availability.
• Flexibility to attend appointments from anywhere within Australia.
• Committed psychiatrists who want to help and understand people who are dealing with ADHD.

Get in touch with us right now to start along the road to successful ADHD management.