ADHD Assessment: Why the Whole Person Matters

Estimated reading time: 8 minutes

Channel 4’s recent documentary The Great ADHD Myth? prompted me to revisit a question that has always sat at the centre of my nursing practice: when someone is struggling, are we looking closely enough at the person, or are we becoming too focused on the label?

The debate around ADHD can quickly become polarised. I do not think that is helpful. ADHD is recognised in current NICE guidance as a neurodevelopmental disorder, and the purpose of this article is not to question whether people’s experiences are real. The more useful question is whether ADHD assessment is consistently thorough enough to understand the individual behind the symptoms.

For me, that means asking about a person’s developmental and social history, what is happening in their life now, how their difficulties affect day-to-day functioning, their physical and mental health, their relationships, their environment, the support around them and what they have already tried. It means being curious before being certain.

This article is for professional discussion and general information. It is not individual medical advice and does not replace assessment, diagnosis or treatment by an appropriately qualified healthcare professional.

What does an ADHD assessment involve?

Direct answer

A good ADHD assessment should look beyond a checklist of symptoms. NICE says diagnosis should be made by an appropriately qualified specialist and be based on a full clinical and psychosocial assessment, a full developmental and psychiatric history, observer reports and assessment of the person’s mental state. Rating scales can support that process, but should not be used on their own to make a diagnosis. The assessment should also consider the person’s needs, coexisting conditions, social and family circumstances, education or employment and physical health.

By	Kay Barrett
Experience	Task Force Executive, Delphi Care Solutions
Sources	Sources and further reading

About the author

Kay Barrett is a Registered Nurse for Learning Disabilities (RNLD) with over 30 years of nursing experience across social care and healthcare settings, supporting people with learning disabilities and mental health needs. Her career includes community, respite, residential, acute, PICU and forensic services, alongside managing teams and services and contributing to Quality Improvement Projects. Her practice is grounded in compassion-focused, co-produced care.

Key Takeaways

• ADHD assessment should consider the whole person, not symptoms in isolation.
• Current NICE guidance requires a specialist clinical and psychosocial assessment, developmental and psychiatric history, and information about how symptoms affect everyday life.
• Rating scales and assessment tools can be useful, but they should not be the sole basis for diagnosis.
• Symptoms such as poor concentration, forgetfulness, restlessness and organisational difficulty can overlap with other health or life experiences, so context and differential diagnosis matter.
• Medication can be beneficial for some people with ADHD, but treatment should be individualised, discussed with the person and reviewed over time.
• A diagnosis can help someone understand their needs and access support, but it should never replace curiosity about the individual.

Table of contents

• What does an ADHD assessment involve?
  • Key Takeaways
  • The questions that help build the full picture
• Why symptoms alone do not tell the whole story
• Assessment tools are useful, but not enough on their own
• ADHD medication: an individual decision, not an automatic next step
• Why context matters: overlapping experiences and contributory factors
  • Menopause is one example of why context matters
• A diagnosis should inform care, not define the person
• What should healthcare professionals keep asking?
• Sources and further reading
• Frequently asked questions about ADHD assessment
  • Can ADHD be diagnosed with a brain scan?
  • Is an ADHD assessment just a questionnaire?
  • Does an ADHD diagnosis automatically mean medication?
  • Can other conditions or life circumstances affect attention and concentration?
• Looking beyond the label
• Next steps
  • Clinical & Operational Support

When I think about ADHD assessment, my starting point is not a questionnaire. It is the person sitting in front of me.

NICE guidance is clear that ADHD should only be diagnosed by a specialist psychiatrist, paediatrician or other appropriately qualified healthcare professional with training and expertise in diagnosing ADHD. The diagnosis should be based on a full clinical and psychosocial assessment, a full developmental and psychiatric history, observer reports and assessment of the person’s mental state.

NICE also says the diagnostic process should include an assessment of the person’s needs, coexisting conditions, social and family circumstances, education or work, and physical health. In other words, the formal guidance itself supports a broad, contextual view rather than a narrow symptom count.

The questions that help build the full picture

Throughout my professional experience of working with people who have an ADHD diagnosis, or who are presenting with concerns about ADHD, I have wanted to understand more than what is happening in a single appointment. I want to know:

• What was their childhood and developmental history?
• How did they experience school, education or training?
• When did their current difficulties begin, and how have they changed over time?
• What impact do those difficulties have on everyday functioning?
• What is happening in their relationships and social environment?
• How are they sleeping?
• What is their current mental wellbeing and physical health?
• What pressures or changes are they dealing with now?
• What support do they already have?
• What strategies, adjustments or treatments have they already tried?

Those questions do not replace a formal ADHD assessment. They are part of understanding the context in which symptoms are occurring. That context can be clinically important, and it can also help make any eventual support more relevant to the individual.

Why symptoms alone do not tell the whole story

ADHD is associated with difficulties involving inattention, hyperactivity and impulsivity. In everyday life, that may show up as trouble staying focused, forgetfulness, physical restlessness, organisational difficulties or acting before thinking.

But a symptom is not necessarily a diagnosis. NICE notes that ADHD symptoms can overlap with those of other conditions and that care is needed in differential diagnosis. ADHD can also coexist with other conditions, which means the task is not simply to decide whether one label is “right” or “wrong”. It is to understand what is contributing to the person’s difficulties and what support they need.

This is one reason I am uncomfortable when complex experiences are reduced to a short list of behaviours. Two people may describe similar difficulties but have very different histories, circumstances, strengths and support needs.

Assessment tools are useful, but not enough on their own

Assessment tools have a legitimate place in ADHD assessment. Structured questionnaires, rating scales and observations can help clinicians gather information consistently and identify patterns that need further exploration.

However, NICE specifically states that an ADHD diagnosis should not be made solely on the basis of rating-scale or observational data. For children and young people aged 6 to 17, QbTest can now be used as an option to help with diagnosis, but it is an aid to the wider assessment rather than a replacement for clinical judgement and history-taking.

That distinction matters. A score can tell us something. It cannot tell us everything about a person’s life, relationships, health, environment, coping strategies or the meaning of their difficulties.

ADHD medication: an individual decision, not an automatic next step

Medication can be incredibly beneficial for some people with ADHD. I am not arguing otherwise. My concern is with any approach that allows the assessment, diagnosis and treatment conversation to become too automatic.

Current NICE guidance takes a more nuanced approach. For children aged 5 and over and for young people, medication is recommended only where symptoms continue to cause significant impairment after environmental modifications have been implemented and reviewed, alongside discussion with the child or young person and their parents or carers and a baseline assessment. For adults, NICE recommends medication where ADHD symptoms are still causing significant impairment after environmental modifications have been implemented and reviewed. It also recognises non-pharmacological treatment for adults in a number of circumstances, including when someone makes an informed choice not to have medication or cannot tolerate it.

NICE also requires ADHD medication to be initiated by a healthcare professional with training and expertise in diagnosing and managing ADHD, and recommends regular monitoring and at least annual review.

For me, the principle is simple: medication should neither be dismissed nor treated as the whole answer. The person should understand the available options, the likely benefits and potential adverse effects, and have the opportunity to revisit decisions as their needs and circumstances change.

Why context matters: overlapping experiences and contributory factors

One of the questions raised for me by the documentary was whether we always spend enough time exploring other factors that may be contributing to the difficulties a person describes.

This does not mean that social circumstances, stress, trauma, sleep, hormonal change or other health issues “explain away” ADHD. Nor does it mean that someone cannot have ADHD alongside those experiences. It means that a thorough assessment should consider them rather than assume that every difficulty with concentration, memory, restlessness or organisation has the same explanation.

Menopause is one example of why context matters

Menopause is a useful personal example. NHS guidance lists sleep problems, mood changes, poor memory and problems with concentration among common symptoms of perimenopause and menopause. I recognise some of those experiences in myself.

Those symptoms are real and can affect daily life. But experiencing them does not automatically tell me what the diagnosis is. The example is not intended to compare menopause with ADHD or to suggest one is commonly mistaken for the other. It simply illustrates the wider point: similar-looking difficulties can arise in different contexts, so careful history-taking matters.

A diagnosis should inform care, not define the person

A diagnosis can be important. It can help someone make sense of longstanding difficulties, identify strengths, access services, receive adjustments and make informed decisions about treatment. NICE explicitly recognises both the positive impact of diagnosis and the potential negative impact of stigma and labelling.

What I do not want us to lose is the individuality behind that diagnosis.

Two people with the same diagnosis may experience it very differently. They may have different relationships, environments, responsibilities, coexisting conditions, coping strategies and goals. Good care therefore cannot stop at “this person has ADHD”. It has to continue to ask, “What does this individual need?”

That has been a constant throughout my nursing career. I am not a psychologist or a psychiatrist. I am a nurse, and I was taught to look at the whole person rather than simply the presenting symptom. That principle remains just as important when we are talking about neurodevelopmental conditions.

What should healthcare professionals keep asking?

Whatever the diagnosis, person-centred clinical practice depends on curiosity. In practical terms, that means continuing to ask:

• Have we understood the person’s history rather than only their current presentation?
• Have we considered how symptoms appear across different settings and stages of life?
• Have we explored coexisting mental or physical health needs?
• Have we listened to what the person finds most difficult and what they want to change?
• Have we considered their relationships, education, employment, environment and support network?
• Have we explained the available options clearly enough for them to make an informed choice?
• Are we reviewing whether the support or treatment is actually helping the outcomes that matter to that person?

Clinical curiosity is not a rejection of diagnosis. It is what helps make diagnosis and treatment meaningful.

Sources and further reading

• NICE: Attention deficit hyperactivity disorder: diagnosis and management (NG87)
• NICE: ADHD recommendations on diagnosis, treatment and medication review
• NICE: Digital technologies for assessing attention deficit hyperactivity disorder (ADHD) (HTG729)
• NHS: Symptoms of menopause and perimenopause
• Channel 4: The Great ADHD Myth? programme announcement

Frequently asked questions about ADHD assessment

Can ADHD be diagnosed with a brain scan?

Not as part of routine diagnosis. Current NICE guidance bases ADHD diagnosis on specialist clinical and psychosocial assessment, developmental and psychiatric history, observer reports and assessment of mental state. Brain imaging is not listed as a diagnostic test for deciding whether an individual has ADHD.

Is an ADHD assessment just a questionnaire?

No. Rating scales and questionnaires can be useful supporting tools, but NICE says ADHD should not be diagnosed solely on the basis of rating-scale or observational data. A full assessment needs wider clinical, developmental and contextual information.

Does an ADHD diagnosis automatically mean medication?

No. Treatment decisions depend on factors including age, level of impairment, environmental modifications, individual preferences, response to previous support and clinical assessment. Medication is an evidence-based option for many people, but decisions should be individualised and reviewed.

Can other conditions or life circumstances affect attention and concentration?

Yes. Difficulties with attention, concentration, memory, restlessness or organisation can occur in different health and life contexts. This is why differential diagnosis, coexisting conditions and the person’s wider circumstances are important parts of assessment.

Looking beyond the label

The most useful conversation is not whether ADHD is “real” or “not real”. That framing is too simplistic for a complex clinical and human subject.

The more constructive question is whether people are being assessed thoroughly, whether we are taking account of the full context of their lives, and whether treatment and support are genuinely individualised.

We should be curious. We should ask questions. We should listen. We should recognise that two people with the same diagnosis may have completely different experiences and needs.

Behind every diagnosis is a human being with a history, relationships, strengths, difficulties, hopes, fears and individuality. A diagnosis can be useful, but it should never become the entirety of how we see the person.

So the question I keep returning to is the same one I started with: what does this individual actually need?

Next steps

For care providers, the wider lesson is relevant beyond ADHD: person-centred practice depends on understanding the individual, testing assumptions, using evidence appropriately and keeping care and support under review.

Clinical & Operational Support

If your service needs experienced external input to strengthen clinical practice, operational quality or person-centred service delivery, explore Delphi Care Solutions’ Clinical & Operational Support or speak to the Delphi team about the needs of your service.