
Dr. Mimi XuChild & Adolescent Psychiatrist
MD, MMed(Psych), FRANZCP, Adv Cert Child Adol Psych
AHPRA: MED0001931439
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Dr. Mimi XuChild & Adolescent Psychiatrist
Specialist psychiatry for ADHD in children, adolescents, and adults. Validated rating scales, clear diagnosis, and individualised treatment via secure telehealth across Australia.
Attention Deficit Hyperactivity Disorder (ADHD) is a neurodevelopmental condition characterised by persistent patterns of inattention, hyperactivity, or impulsivity that interfere with daily functioning. It is one of the most common conditions seen in child and adolescent psychiatry, and increasingly recognised in adults who were never assessed in childhood.
ADHD presents in three forms: predominantly inattentive (often missed in girls and quiet kids), predominantly hyperactive-impulsive, and combined type. The same person can present very differently at home, at school, and at work, which is one reason diagnosis benefits from input across settings rather than a single observation.
Around 6 to 10 percent of Australian children and 2 to 5 percent of adults meet criteria for ADHD. It is highly heritable, frequently runs in families, and commonly co-occurs with anxiety, learning difficulties, autism, sleep problems, and mood disorders. With accurate assessment and a well-tailored treatment plan, most people with ADHD see meaningful improvement in function, relationships, and quality of life.
Common Signs of ADHD
Common ways ADHD can present
Difficulty sustaining attention on schoolwork, frequent careless mistakes, often appearing not to listen, losing belongings, becoming easily distracted, and avoiding tasks that require sustained mental effort. Often more obvious in school than at home.
Constant fidgeting, difficulty staying seated, talking excessively, interrupting others, or acting before thinking. In older children and adults, hyperactivity often becomes internal restlessness rather than visible movement.
Often missed because girls are more likely to be quiet daydreamers than disruptive. Presents as forgetfulness, slow task completion, anxiety about school, and chronic underperformance relative to ability. Frequently first identified in adolescence or adulthood.
Difficulty with organisation, time management, finishing projects, emotional regulation, and sustaining focus on non-stimulating tasks. Often discovered when an adult's child is diagnosed, or after burnout in jobs that demand sustained planning.
Trouble with planning, prioritising, working memory, and shifting between tasks. Homework that should take 30 minutes stretches to three hours. Adults miss appointments, struggle with paperwork, and find admin overwhelming.
Strong emotional reactions disproportionate to the trigger, low frustration tolerance, and difficulty calming down. This is now recognised as a core part of ADHD for many people, not a separate condition.
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Our free screening tools can help with that first step.
ADHD · Autism · Anxiety · Depression · PTSD
Take a Free ScreeningComprehensive psychiatric assessment is the starting point. This includes clinical interview, validated rating scales (Vanderbilt for children, ASRS for adults), and where possible information from teachers, partners, or parents. We rule out conditions that mimic ADHD, identify common comorbidities, and form a clear diagnostic picture before treatment planning.
Stimulant medication (methylphenidate or dexamfetamine) is the most evidence-supported treatment for ADHD across all age groups, with response rates above 70 percent when correctly dosed. Non-stimulant options (atomoxetine, guanfacine) suit people who do not tolerate stimulants or have specific comorbidities. Medication decisions are individualised, reviewed regularly, and adjusted over time.
Behavioural and environmental strategies matter alongside medication, especially for children. Parent-management training, school accommodations (additional time, scaffolded assignments), structured routines, and ADHD-informed psychology all contribute. For adults, ADHD coaching, CBT adapted for ADHD, and workplace adjustments improve outcomes when combined with medication.
Our Specialist Psychiatrists
Experienced clinicians providing assessment and treatment for ADHD


How to Get Started
Simple steps to access specialist care
Complete our free, validated screening tools for some initial answers.
Request a Mental Health Treatment Plan referral from your GP.
Choose a convenient time for your telehealth consultation.
Meet with your psychiatrist via secure video from home.
Diagnosis matters because ADHD overlaps with several other conditions. Anxiety, autism, learning disorders, sleep apnoea, trauma, and mood disorders can all look like ADHD or co-occur with it. A psychiatric assessment teases these threads apart so the treatment plan addresses the right targets in the right order.
Telehealth works well for ADHD assessment and ongoing review. We coordinate teacher rating forms by secure link, conduct comprehensive interviews via video, and provide detailed reports to your GP within 5 business days. For children, having the assessment from home reduces the additional stress of an unfamiliar clinic environment.
Stimulant prescribing in Australia is regulated by state-based authorities and requires a psychiatrist or paediatrician. We hold the relevant authorities and manage prescribing, monitoring (heart rate, blood pressure, growth, sleep), and dose adjustment over time. Where ongoing prescribing is being shared with a GP, we provide a clear handover plan.
Validated screening tools you can complete anonymously and share with any clinician.
Comprehensive parent and teacher rating scales for childhood ADHD. Includes screening for common comorbidities.
6-12 years
WHO-validated 18-question screener for adult ADHD. Assesses inattention and hyperactivity-impulsivity.
18+ years
Anxiety frequently co-occurs with ADHD. Useful comorbidity screen.
8+ years
Conditions that often co-occur with ADHD or share overlapping presentations.
Autism Spectrum Disorder assessment and ongoing psychiatric support for children, adolescents, and adults. NDIS-suitable diagnostic reports and treatment of common co-occurring conditions via telehealth across Australia.
Anxiety assessment and treatment for children, adolescents, and adults. Includes generalised anxiety, social anxiety, separation anxiety, panic disorder, and school refusal. Telehealth across Australia.
Depression assessment and treatment for children, adolescents, adults, and perinatal women. Specialist psychiatric care via telehealth across Australia.
Obsessive-Compulsive Disorder (OCD) is a mental health condition involving intrusive thoughts and repetitive behaviours. Specialist assessment, diagnosis, and treatment via telehealth across Australia.
Frequently Asked Questions
Common questions about ADHD
ADHD is diagnosed by a psychiatrist or paediatrician through a clinical interview, validated rating scales (such as Vanderbilt for children or ASRS for adults), and collateral information from teachers, partners, or parents. There is no blood test or brain scan that diagnoses ADHD. The assessment confirms symptom patterns meet DSM-5 criteria and rules out conditions that look similar.
Yes. Adult ADHD is increasingly recognised, particularly in people who were missed in childhood (often inattentive presentations or girls). Symptoms must have been present before age 12 to meet criteria, but many adults can recall difficulties from school years even if they were never formally identified at the time.
Not always. Treatment is individualised based on severity, age, comorbidities, and family preference. For mild ADHD or younger children, behavioural strategies, school accommodations, and parent-management training may be tried first. For moderate-to-severe ADHD, medication combined with behavioural strategies is typically the most effective approach.
A comprehensive ADHD assessment at Lionheart involves a 90-minute clinical interview, 30-60 minutes of rating scales completed by parents/partners and teachers/colleagues, and a follow-up appointment to discuss findings and treatment options. We provide a detailed report to your GP within 5 business days of the consultation.
In most Australian states, GPs cannot initiate stimulant medication for ADHD without specialist involvement. NSW reforms allow specially trained GPs to prescribe for straightforward ADHD from 2026 onwards. Complex cases will continue to require psychiatric or paediatric oversight. After initial diagnosis and stabilisation, ongoing prescribing is often shared with a GP under a specialist plan.
Yes. Lionheart provides full telehealth ADHD assessment and ongoing care across Australia. Teacher rating scales are sent by secure link, the clinical interview is conducted by video, and we coordinate prescribing through your local pharmacy. Telehealth works particularly well for ADHD because home is a familiar environment for children.
We partner with GPs and healthcare professionals to provide comprehensive psychiatric assessments and ongoing collaborative care for your young patients.
Questions about referring? Contact us at hello@lionheartclinic.com.au
Why Choose Telehealth from Australia?
Access specialist psychiatric care without leaving home
Collaborative approach involving parents and carers throughout the journey, with clear communication and support every step
All psychiatrists are Fellows of RANZCP with specialist training in child & adolescent mental health
Secure video consultations from home, reducing stress for children and saving family time
Access specialist care sooner with telehealth appointments across all Australian states and territories
Investment in Your Care
Clear pricing for initial psychiatric assessment
A comprehensive 1.5 hour clinical consultation including:
Medicare Rebates Available
With a valid GP referral and Mental Health Treatment Plan, you may be eligible for Medicare rebates. Please check with Medicare for current rebate amounts.
Follow-up Consultations
If ongoing care is recommended, follow-up appointments are available at standard private psychiatry rates.
For current fees, please or reach out to us directly.
To book an appointment, ask your GP for a referral to Lionheart Clinic. Referrals are valid for 12 months and Medicare rebates apply. We also accept private bookings and NDIS participants.
Important: We Are NOT an Acute Crisis Service
Lionheart Clinic provides non-acute psychiatric assessment and ongoing care. If you, your child, or a young person you care for are experiencing any of the following, please seek immediate help:
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