Does my child need an assessment, and how do I decide?

Parents rarely begin with a neat diagnostic question. They notice that ordinary tasks take far more effort, that school and home seem to see different things, or that support which should help does not explain the whole pattern. Someone may then suggest ADHD, autism or a neurodevelopmental assessment.

An assessment can be valuable, but the decision is not "label or no label." Ask what question the process could answer and what would happen with the answer.

Start with the reason you are considering it

Write one sentence without a diagnostic conclusion:

We want to understand why R loses spoken instructions, cannot start written work without individual prompting and is exhausted after school, despite targeted teaching support.

Or:

We want to understand a long-standing difference in M's communication, sensory experience and response to change, and whether an autism assessment is appropriate.

This clarifies the function of assessment. It may help:

• explain a persistent developmental pattern;
• distinguish overlapping possibilities;
• identify strengths and support needs;
• inform treatment or health monitoring;
• give the child language for their experience;
• guide education, family or transition planning.

It may not answer every parenting, school or mental-health question. Ask which decisions depend on diagnosis and which can be made from needs already visible.

Look for pattern, impact and development

A list of traits can be a starting prompt, but traits occur for many reasons. Record examples with context:

• what happened;
• when and where;
• how often or how long;
• what the child was trying to do;
• the effect on learning, relationships, health or daily life;
• what support was present;
• what made the task easier.

Include strengths and successful conditions. A child who communicates fluently about an interest but cannot organise a request in a busy classroom is not inconsistent. The difference tells the assessor about context and demand.

For a developmental question, note whether the pattern is recent or has earlier examples. Old nursery comments, school reports or family observations may help, but lack of documents should be stated rather than filled with certainty.

Keep other explanations open

ADHD and autism can coexist with other neurodevelopmental, mental-health, learning and physical conditions. Similar observations can also arise from sleep, pain, hearing or vision difficulty, epilepsy, medication effects, anxiety, language needs, trauma, bullying, inaccessible learning or major change.

This does not mean a parent must solve the differential diagnosis before asking for help. It means the referral should explain the pattern and allow the appropriate clinician to consider alternatives and coexisting needs.

Seek clinical advice promptly for regression, seizures, fainting, significant weight or eating change, severe sleep disruption, persistent pain, sudden personality or functioning change, or immediate safety concerns. Do not place those automatically inside an ADHD or autism wait.

Understand what assessment is

Observation, screening, referral, assessment and diagnosis are different steps.

Observation records what someone noticed in a particular context.

Screening may indicate that fuller assessment should be considered. A score is not a diagnosis.

Referral asks a service to consider the question under its criteria. Acceptance means the assessment route proceeds; it does not predict the result.

Diagnostic assessment combines clinical judgement with developmental, health and current information from several sources and settings.

Diagnosis is a clinical conclusion that defined criteria are met. An assessment may instead conclude that criteria are not met, that another explanation is more likely, or that uncertainty remains.

NICE says ADHD should be diagnosed by an appropriately qualified specialist using a full clinical and psychosocial assessment, developmental and psychiatric history, observer reports and information about impairment across important settings. Rating scales or observation alone are not sufficient ^[1]. NICE autism guidance likewise says clinicians should use information from all sources with clinical judgement and should not rely on an autism-specific tool alone ^[2].

Ask whether the current problem matches the proposed pathway

Local services differ. One team may assess autism only, another ADHD only, and another a broader neurodevelopmental question. The referral route may run through a GP, school, health visitor, paediatric service or local single point of access.

Ask:

• What question does this service assess?
• What ages and area does it cover?
• Who can refer?
• What evidence is required and why?
• Does it consider coexisting conditions?
• What happens if the referral is not accepted?
• What report and feedback are provided?
• What support or onward route follows each outcome?

The NHS says families seeking an ADHD assessment can speak to a GP or SENCO and that local routes and waits vary ^[3]. Its autism page says a GP can often refer, while some child pathways require school or a health visitor ^[4]. Check the current local service rather than assuming one national doorway.

Include your child in the decision

Explain what you have noticed and why you are considering help. Use language appropriate to your child, without presenting diagnosis as a verdict already reached.

For example:

We have noticed that school takes much more energy than adults realised, and some instructions disappear before you can use them. An assessment might help us understand how your attention and communication work. It might or might not lead to a diagnosis.

Ask what they want adults to understand and whether there are worries about the process. A teenager's wish not to discuss assessment at a particular moment is information to work with, not a reason to speak about them as if they are absent.

Consent, confidentiality and decision-making depend on age, understanding and the particular service. Ask the team to explain how it will involve your child.

Weigh likely value against burden

Consider time, forms, appointments, school information, travel, cost and emotional impact. Then consider the potential value of a clearer formulation, access to condition-specific treatment, self-understanding or future planning.

Do not promise that diagnosis will secure a particular school provision, benefit, medication or service. Eligibility and clinical decisions use their own criteria. Equally, do not dismiss assessment because support should already be needs-led. Diagnosis and current support answer different questions.

If a private assessment is being considered, use the dedicated NHS or private assessment guide to examine provider qualifications, NICE-consistent process, report, follow-up, prescribing and downstream acceptance.

Know what assessment cannot decide

A diagnostic assessment can describe whether clinical criteria are met and may recommend support. It does not automatically decide:

• the provision a school must deliver;
• whether a statutory education plan is required;
• benefit entitlement;
• which placement is suitable;
• whether medication should start;
• what happened in a disputed school incident;
• how every future difficulty should be understood.

Those questions have their own evidence and decision-makers. Before seeking assessment for access to one outcome, ask the body responsible what its actual test is. A report may inform that decision without controlling it.

This matters for the child too. Present assessment as a way to understand a clinical question, not a key that must provide all help. If the result is different from the family's expectation, support needs still have to be addressed through the relevant route.

Consider timing and readiness

There may be reasons to act promptly, such as persistent impairment, an approaching transition or a treatment question. There may also be practical reasons to gather missing health or school information before a referral is ready.

Do not delay urgent care or necessary educational support to create a tidier diagnostic picture. Equally, do not rush a child into a poorly explained appointment because a slot appeared. Ask what can be adjusted, what information is essential and whether the service can accommodate communication or sensory needs.

If your child does not want assessment, explore what they understand and fear. A young person's involvement, consent and confidentiality will depend on age, understanding and the clinical situation. Ask the service to explain its process. Avoid turning the question into a choice between total compliance and no help.

Revisit the decision when evidence changes

Choosing not to seek assessment now does not close the question forever. Record why: perhaps current support is working, the child does not want the process, another health assessment takes priority or the likely benefit is unclear.

Set a sensible point to review if functioning changes, a transition approaches or new information appears. Likewise, once referred, update the question if the child's presentation or setting changes substantially. An old referral should not silently become the explanation for a new problem.

Turn the decision into a request

If you decide to proceed, prepare a brief request containing the pattern, impact, support tried, current health questions and what you want assessed. Avoid a dossier designed to make disagreement impossible.

Ask the referrer to name the pathway, attach relevant sources and confirm what happens at triage. The referral guide provides the full structure. If you decide to wait, use the same information to improve current support rather than storing it for a future clinician only.

Tell the child what has been decided and what remains open. "We are asking the GP which assessment route fits" is more accurate than "you are being tested for autism" before a referral has been accepted. Name the next date or contact if known, and say when you do not know.

Keep the original question on the front of the file. Long waits and repeated forms can turn a focused assessment request into a collection of every difficulty the child has ever had. New information belongs there only when it helps the clinician understand the developmental pattern, current impact, another possible explanation or an access need.

Build a short decision record

Use four headings:

If the answer to the second question is unclear, ask the suggested referrer or clinician. You can gather information without committing to every later step.

Start support now

The NHS states that children should continue to receive support at home and school while waiting for ADHD assessment ^[3], and its autism page directs families to support while waiting or if referral is not obtained ^[4].

Ask school to address the observable learning or participation barrier. Ask health professionals to assess current symptoms. Adjust routines around the child's needs, not an assumed diagnosis. The waiting guide gives a structured plan.

An assessment is most useful when it is asked a clear question and interpreted as one source of understanding. It need not become the gate through which every useful change must pass.

Sources

1. NICE, Attention deficit hyperactivity disorder: diagnosis and management
2. NICE, Autism spectrum disorder in under 19s: recognition, referral and diagnosis
3. NHS, ADHD in children and young people
4. NHS, Autism assessments