Condition guide · ADHD

ADHD is one of the most-treatable developmental conditions — when the plan matches the child.

A reviewed-by-paediatrician guide to attention-deficit/hyperactivity disorder for parents — what the DSM-5 criteria are, what the evidence says about behavioural intervention versus medication, and what a structured plan that actually holds looks like.

Reviewed by Chief Medical Officer (Developmental Paediatrician) Published 6 May 2026 Updated 6 May 2026
Diagnostic criteria
DSM-5-TR · ICD-11
Onset
Symptoms before age 12
Global prevalence
5–8% school-age
AAP first-line under 6
Behavioural therapy
Reviewed by a developmental paediatrician
Cites AAP, MTA study, NIH guidance
Updated when guidelines update
About this condition

What ADHD actually is.

Attention-Deficit/Hyperactivity Disorder (ADHD) is a neurodevelopmental condition characterised by persistent patterns of inattention and/or hyperactivity-impulsivity that are out of proportion to the child’s developmental level and that meaningfully impair function across multiple settings. It is one of the most common — and one of the most treatable — developmental conditions in childhood.

Three presentations, one diagnosis

The DSM-5-TR recognises three presentations of ADHD: predominantly inattentive (the child who can’t sustain attention but isn’t visibly hyperactive), predominantly hyperactive-impulsive (the child who is in motion and impulsive but whose attention to preferred tasks may be intact), and combined (both patterns present). Children — particularly girls — are often under-identified in the inattentive presentation because they are easier to overlook; they don’t disrupt the classroom in the way a hyperactive child does.

Where the diagnosis lives

ADHD is a clinical diagnosis based on DSM-5-TR criteria; there is no blood test or brain scan that confirms it. The clinician needs to establish that (1) at least six symptoms of inattention or hyperactivity-impulsivity have been present for six months, (2) symptoms are present in two or more settings (typically home and school), (3) symptoms began before age 12, and (4) symptoms cause meaningful functional impairment. Behavioural rating scales (Vanderbilt, Conners-3) collect parent and teacher data; the clinician triangulates them with developmental history and direct observation.

What the evidence says about treatment

The most influential study in paediatric ADHD treatment is the NIMH-sponsored Multimodal Treatment Study of ADHD (MTA), launched in the 1990s and followed for decades. Its findings, which have shaped clinical guidelines globally, are roughly: (1) carefully managed stimulant medication produces the strongest short-term symptom reduction; (2) high-quality behavioural therapy produces meaningful improvement, particularly in functional outcomes; (3) the combination of medication plus behavioural therapy produces the strongest sustained outcomes for many children, particularly when co-occurring anxiety, learning differences, or family stress are present.

The American Academy of Pediatrics’ 2019 clinical practice guideline reflects this evidence. For children 4 to 6 years old, the AAP recommends parent training in behaviour management as first-line, with medication considered only where behavioural therapy has not produced sufficient improvement. For children 6 to 18, the AAP recommends FDA-approved medications and behaviour therapy, ideally combined, plus school accommodations.

The choice between medication, behavioural intervention, or both is the family’s. Our job is to give you the data clearly, not to push.

What a good plan does

A defensible ADHD plan addresses three things in order. First, sleep, regulation, and the morning routine — a sleep-deprived child looks identical to a child with worse ADHD, and the morning routine is often where the day’s symptoms snowball. Second, the antecedents to difficulty — the five minutes before a meltdown, the three seconds before an impulse — most of which can be redesigned at the parent and environment level. Third, the child’s own toolkit — externalised executive-function scaffolds (visible plans, time estimation, transition rituals) that compensate for the underlying working-memory and time-perception challenges.

Medication, where indicated, is added to the plan when the executive-function load is heavy enough that behavioural strategies alone aren’t closing the gap, when school is at risk, or when self-esteem is starting to erode in measurable ways. The conversation about medication should be informed by the data already collected over the preceding weeks of behavioural intervention — never started cold.

Common signs

What adhd can look like, age by age.

3–5 years (preschool)
  • Persistent difficulty staying with an age-appropriate activity
  • Significant motor restlessness across settings, not just at home
  • Impulsive responses (interrupting, grabbing) beyond developmental norm
  • Frequent transitions are explosive and slow to settle
6–11 years (primary school)
  • Difficulty completing homework or sustained school tasks
  • Loses school materials repeatedly (pencils, books, P.E. kit)
  • Talks excessively; struggles to wait turn
  • School flags inattention, motor restlessness, or both
  • Self-esteem affected by repeated negative feedback
12+ years (adolescence)
  • Time blindness: difficulty estimating how long tasks will take
  • Disorganisation around homework, deadlines, sports kit, social plans
  • Emotional dysregulation that exceeds typical adolescent volatility
  • Risk-taking decisions that don't match the child's evident intelligence

Lists like this are starting points, not diagnostic checklists. Many children show some of these signs and do not have adhd; some children with adhd present differently from anything described here. The right next step is a structured assessment, not a self-diagnosis.

How it's diagnosed

Tools clinicians use to assess.

01

DSM-5-TR clinical criteria

ADHD is diagnosed when at least six (children) or five (adolescents/adults) symptoms of inattention and/or hyperactivity-impulsivity have been present for six months, in two or more settings, with onset before age 12 and clear functional impairment.

02

Vanderbilt ADHD Diagnostic Rating Scales

Parent and teacher rating scales recommended by the AAP for primary-care evaluation of ADHD. Captures symptom presence/severity plus screens for common co-occurring concerns (anxiety, depression, oppositional patterns).

03

Conners-3

A more detailed clinician-administered rating scale combining parent, teacher, and self-report (where age-appropriate). Useful for triangulating the picture across home, school, and the child's own perception.

04

Cognitive testing (when indicated)

Where a learning disorder may co-occur with ADHD, cognitive and academic testing (e.g., WISC-V, WIAT) is added to map the full profile. This is particularly common in children whose academic struggles exceed what attention difficulties alone would predict.

When to seek help

Signals that warrant a closer look.

  • Symptoms of inattention or hyperactivity present in two or more settings, persisting six months or more
  • Functional impairment in school, social, or family domains
  • Self-esteem starting to erode in measurable ways
  • School pace becoming hard despite reasonable effort
  • Family relationships strained around morning, homework, or bedtime routines

None of these alone is diagnostic. Together, particularly when persistent, they're the signals our paediatrician will want to evaluate.

Treatment approach

What evidence-based support looks like.

01

Parent management training

The single most evidence-supported behavioural ADHD intervention. Structured parent training in routines, antecedent-based prevention, and low-friction consequence systems. AAP first-line for children under 6.

Parental Coaching programme
02

Direct executive-function coaching

For children seven and older, explicit teaching of planning, time-estimation, working-memory scaffolds, and transition routines that compensate for the underlying executive-function challenges.

ADHD Programme programme
03

School coordination & accommodations

Written summary of recommended accommodations the school can act on — preferred seating, redirection strategies, assignment chunking, extended time on assessments where appropriate.

ADHD Programme programme
04

Medication, when indicated

Stimulant and non-stimulant medications have a strong evidence base for school-age children, particularly when behavioural strategies alone aren't closing the functional gap. The decision is the family's; we provide the data.

ADHD Programme programme
Common questions

Questions parents always ask first.

Will my child need medication?

Not necessarily. The AAP recommends behavioural therapy as first-line for children under 6, and behavioural therapy plus medication for children 6 and older. Many children do well with behavioural support alone. The MTA study — the largest long-term ADHD treatment trial — suggests that for many children the strongest outcomes come from combining behavioural support with carefully managed medication. We don't push it. We don't refuse to talk about it. We give you an honest read once we know your child.

Can ADHD be diagnosed without medication being involved?

Yes. A diagnosis is a clinical determination based on DSM-5-TR criteria; it does not commit anyone to medication. Many families want the diagnosis precisely so that the right behavioural support, school accommodations, and family-system adjustments can begin. Medication is one tool among several, and the decision is always the family's.

Can my child with ADHD do well in mainstream school?

Most children with ADHD do mainstream school successfully — often very well — with the right combination of behavioural strategies, school accommodations, and (where indicated) medication. The most common reason children with ADHD struggle in school is not the ADHD itself but the gap between what the child can deliver and what the school is set up to expect. Closing that gap with explicit accommodations is most of the work.

How is online support effective for a hyperactive child?

Sessions are paced shorter, broken into more parts, and built around movement. Online actually has advantages here: the child is in their own space, regulation cues from home are accessible, and the parent can co-deliver any agitating segment. We don't insist a child sit still. We design sessions a child can complete.

What does our ADHD programme include?

Parent management training as the spine, direct child-coaching on executive function, optional school coordination, and — where indicated — paediatrician-managed medication conversation. See our ADHD Programme for the full description.

Sources we draw on

Clinical references behind this page.

This page is reviewed by Chief Medical Officer (Developmental Paediatrician). Information here is intended for parent education and is not a substitute for clinical consultation. For your child's specific situation, book a free consultation.

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