ADHD Diagnosis

How ADHD Is Diagnosed?

ADHD is diagnosed through a clinical assessment, not a single blood test or scan. Clinicians look for a persistent pattern of symptoms (inattention and/or hyperactivity-impulsivity) that lasts at least 6 months, occurs in more than one setting (for example, home and work/school), and causes functional impairment in everyday life.

A key criterion is that several symptoms were present before age 12, even if the person was not diagnosed until adolescence or adulthood. As part of best-practice assessment, we also consider other factors that can mimic or coexist with ADHD, such as anxiety, sleep problems, trauma, learning difficulties, thyroid issues and substance use.

ADHD assessment at ADHD Medical

Our approach reflects best-practice clinical care and Queensland prescribing safeguards. ADHD management works best when it addresses both core symptoms (focus, impulsivity) and real-world functioning (routines, study/work demands, sleep, emotional regulation).

From 1 December 2025, Queensland introduced expanded prescribing rights that allow suitably qualified specialist GPs to play a greater role in the ongoing management of adult ADHD, particularly when medication is part of the treatment plan. Prescribing remains regulated, with dose limits and monitored-medicine requirements.

ADHD Diagnosis

Understanding your path
to diagnosis

A comprehensive evaluation across four key areas helps us build an accurate clinical picture and personalise your care plan.

01

Clinical interview

A structured conversation about your history, symptoms, and how they affect your daily life — at home, work, and in relationships.

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02

Behavioural assessment

Validated rating scales and questionnaires that help us measure attention, impulsivity, and executive function across different settings.

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03

Collateral information

Input from a family member, partner, or employer gives us an outside perspective on your symptoms and helps confirm patterns over time.

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04

Differential diagnosis

We rule out other conditions — anxiety, mood disorders, sleep issues — that can mimic ADHD, ensuring your diagnosis is accurate and complete.

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Ready to Get the Clarity You Deserve?

Book a consultation with our experienced ADHD clinic team in Kangaroo Point, Brisbane.