If your child regularly struggles with attention, restlessness or impulsive behaviour, you may wonder whether an ADHD assessment could help you understand what is happening. Many children occasionally experience these difficulties, so the important questions are how persistent they are, whether they are greater than expected for your child’s developmental stage and how much they affect everyday life.
You should consider professional advice when your child’s difficulties begin to interfere with learning, relationships, family life or other important activities. An assessment does not assume that your child has ADHD; it can help identify whether ADHD, another condition or a combination of factors may be contributing.
When Should You Consider an ADHD Assessment?
You should consider seeking professional advice when your child has persistent difficulties with attention, activity levels or impulse control that appear greater than expected for their developmental stage and are affecting their development, learning, relationships, family life or another important area of everyday functioning.
If your child’s difficulties are adversely affecting their development or family life, you may initially be offered support and a period of watchful waiting of up to 10 weeks. If your child’s difficulties persist and cause at least moderate impairment, they should be referred for specialist assessment. If your child is already experiencing severe impairment, you should expect direct referral rather than an unnecessary period of watchful waiting.
Are Attention Difficulties Affecting Your Child?
Your child might regularly become distracted, forget instructions, lose track of everyday tasks or struggle to concentrate for long enough to complete activities. While occasional distraction is a normal part of childhood, ongoing attention difficulties may be more concerning when they begin to affect your child’s daily routines, learning or ability to complete tasks.
You may notice that your child needs frequent reminders, finds it difficult to stay focused or often moves from one activity to another without finishing. If these difficulties are persistent and interfere with everyday functioning, an ADHD assessment may help you understand what could be contributing to them.
Is Your Child Unusually Restless?
You may notice that your child finds sitting still particularly difficult, fidgets frequently or seems to be constantly on the move. While children naturally have different energy levels, persistent restlessness may be worth discussing when it seems noticeably greater than expected for your child’s developmental stage.
If your child’s activity level repeatedly causes difficulties at school, during meals or in situations where calmer behaviour is expected, you may want to speak with a professional. This can help you understand whether the behaviour is part of your child’s normal development or whether further assessment could be helpful.
Does Your Child Often Act Impulsively?
Impulsive behaviour can include interrupting conversations, finding it difficult to wait for a turn or acting before considering the possible consequences. While occasional impulsive behaviour is common in children, frequent patterns may be worth paying closer attention to.
If these behaviours are regularly affecting your child’s safety, friendships or everyday activities, you may want to discuss your concerns with a professional. Further assessment can help you understand what may be contributing to your child’s impulsive behaviour and whether additional support could be helpful.
Are Your Child’s Signs Seen in More Than One Setting?
For an ADHD diagnosis, your child’s relevant symptoms should occur frequently in at least two important settings and cause meaningful difficulties. These settings may include home, school, nursery or social situations.
- Multiple settings: Symptoms should be present in at least two important environments.
- Daily impact: Difficulties should cause psychological, social or educational impairment.
- Different behaviour: Your child may show symptoms differently in each setting.
- Environmental factors: Structure, demands, distractions and support can affect how noticeable symptoms are.
- Overall pattern: Your specialist considers your child’s behaviour across settings rather than expecting identical behaviour everywhere.
Looking at different environments helps your specialist understand your child’s difficulties more accurately. This broader assessment supports a more reliable ADHD diagnosis.
Could the Behaviour Be Normal for Your Child’s Age?
Your child may be energetic, distracted or impulsive without having ADHD, particularly when they are young, tired, anxious or excited. You should compare their behaviour with what would reasonably be expected for their developmental stage rather than simply with one sibling or classmate.
Concern becomes greater when your child’s difficulties are persistent, occur across important areas of their life and have a significant effect on their development or everyday functioning. A specialist assessment can help distinguish ADHD from normal developmental variation or another explanation.
Is ADHD Affecting School Performance?
You may notice that your child struggles to follow classroom instructions, complete schoolwork, organise their belongings or stay focused during lessons. Teachers may also notice frequent interruptions, excessive movement around the classroom or difficulty keeping up with tasks, even when your child has the ability to understand the work.
These difficulties can sometimes affect your child’s confidence and progress at school, particularly when they happen regularly. If similar concerns are being raised by teachers and you are noticing them at home, an ADHD assessment may help you understand what could be affecting your child’s learning and behaviour.
Can ADHD Affect Friendships and Family Life?
ADHD-related difficulties with impulsivity, listening, waiting and emotional regulation can sometimes affect your child’s friendships and family relationships. If these challenges regularly interfere with confidence, relationships or everyday activities, an assessment can help identify the difficulties and appropriate support.
How ADHD May Affect Relationships
| Area | Possible Difficulty | How It May Affect Your Child | What May Help |
| Impulsivity | Acting or speaking without thinking | May lead to misunderstandings or disagreements | Clear reminders and consistent support |
| Listening | Difficulty staying focused during conversations | May make it harder to follow discussions or instructions | Short, clear communication and gentle prompts |
| Taking turns | Finding it difficult to wait | May cause frustration during games or group activities | Practising turn-taking and predictable routines |
| Emotional regulation | Strong or rapid emotional reactions | Can affect friendships and family interactions | Support with recognising and managing emotions |
| Social situations | Difficulty following social expectations | May make friendships more challenging | Guidance and support with social skills |
| Confidence | Repeated difficulties with relationships | May affect self-esteem and participation | Positive reinforcement and appropriate support |
| Family life | Ongoing challenges at home | Can create tension between siblings or family members | Understanding the underlying difficulties and seeking professional advice when needed |
Should You Listen to Concerns From Teachers?
Teachers see your child in a structured environment where sustained attention, organisation and turn-taking are regularly expected, so their observations can provide valuable insight. They may notice patterns that are less obvious at home, particularly when your child is expected to follow instructions, complete tasks or manage classroom routines.
If school staff repeatedly raise concerns about your child’s concentration or behaviour, it is worth discussing what they are seeing with them. Working together can help you understand your child’s difficulties more clearly and decide whether additional assessment or support could be helpful.
How Long Should ADHD Symptoms Have Been Present?
ADHD is characterised by a persistent pattern rather than a short period of difficult behaviour. Your specialist will ask when you first noticed your child’s difficulties, whether they have continued over time and how their effects have changed as educational and social demands have increased.
You do not need to establish an exact starting date before seeking advice. Your specialist will consider your child’s developmental history and the available evidence alongside their current symptoms and impairment.
Could Something Else Be Causing the Difficulties?
Your child’s difficulties with attention, restlessness or impulsivity do not automatically mean that they have ADHD. Anxiety, autism, learning difficulties, sleep problems and other developmental, emotional or health concerns may produce overlapping difficulties, and more than one condition can occur together.
Your specialist should therefore consider your child’s wider development, mental and physical health, educational circumstances and family situation rather than trying to diagnose ADHD from individual behaviours alone.
What Should You Do Before Requesting an Assessment?
You can start by discussing your concerns with your child’s teacher, SENCO, GP or another appropriate professional. You may find it useful to keep specific examples of when your child’s difficulties occur, how long they have been present and how they affect their learning, relationships, routines, safety or wellbeing.
You do not need to wait for your child to receive an ADHD diagnosis before asking for appropriate support. You should continue working with their school and other professionals on practical strategies and environmental changes that address the difficulties they are already experiencing while their referral or assessment is being considered.
What Happens During an ADHD Assessment?
Your child’s ADHD assessment should include a full clinical and psychosocial assessment, developmental and mental-health history and information about how their difficulties affect everyday life. Your specialist will usually speak with you and your child and obtain observations from teachers, a SENCO or other people who know your child well.
Rating scales and other assessment tools may provide useful additional information, but they cannot diagnose your child independently. If your child is aged 6 to 17, QbTest may be used as an additional tool alongside their standard clinical assessment to provide information about attention, activity and impulsivity.
Can a Computer Test Diagnose Your Child With ADHD?
No. Your child cannot be diagnosed with ADHD from a computer test alone. NICE recommends QbTest as an optional tool to help with diagnosis for children and young people aged 6 to 17, but your specialist must use it alongside a standard clinical assessment.
Other digital ADHD-assessment technologies currently require further research for this purpose. You should therefore be cautious about any service suggesting that a single online or computer-based result can confirm or rule out ADHD in your child.
Who Carries Out an ADHD Assessment?
Your child’s ADHD diagnosis should be made by a specialist psychiatrist, paediatrician or another appropriately qualified healthcare professional with training and expertise in diagnosing ADHD. Your GP, SENCO or another professional may help arrange referral but should not make the initial diagnosis independently.
If you want further guidance, arranging a specialist ADHD assessment for children in London can help you understand your child’s difficulties and whether ADHD may be contributing. Your specialist should also consider other possible or coexisting needs rather than focusing solely on whether your child meets ADHD criteria.
Why Is School Information Part of the Assessment?
Information from your child’s teacher or SENCO can help your specialist understand their concentration, organisation, behaviour, learning and relationships in an educational environment. This is important because ADHD symptoms used for diagnosis should occur across more than one important setting.
Your child does not have to behave identically at school and at home. Differences between the reports may themselves provide useful information about environmental demands, structure and support and should be explored rather than automatically treated as evidence for or against ADHD.
What Happens After the Assessment?
If your child receives an ADHD diagnosis, your specialist should explain what it means and discuss appropriate support according to their age, impairment and individual needs. This may include environmental changes at home or school, family-focused support and, when clinically appropriate, medication.
If your child does not meet the criteria for ADHD, their assessment may still identify other explanations or support needs. You should ask what the findings mean, whether another assessment is appropriate and what practical help can be put in place for the difficulties your child is experiencing.
Myth vs Fact
| Myth | What You Should Know |
| Your child needs an assessment because they are very energetic. | Your child’s developmental stage, persistence of symptoms and level of impairment all need to be considered. |
| Your child must have problems specifically at home and school. | Your child’s diagnostic symptoms need to occur across at least two important settings, which may include other social environments. |
| Your child must behave exactly the same everywhere. | Your child’s behaviour may vary according to structure, demands and support while an underlying pattern remains present. |
| Your child needs a diagnosis before school can provide any support. | Your child can receive appropriate educational support while assessment is being considered or awaited. |
| Your child’s teacher can diagnose ADHD. | Your teacher can provide valuable information, but your child’s diagnosis requires an appropriately trained specialist. |
| One ADHD questionnaire can confirm your child’s diagnosis. | Your child needs a comprehensive clinical assessment using information from several sources. |
| QbTest can diagnose your child automatically. | Your child aged 6 to 17 may have QbTest as supporting evidence, but it cannot replace specialist assessment. |
| Your child definitely has ADHD if the symptoms are persistent. | Your child may have ADHD, another condition or more than one contributing difficulty. |
| An assessment is pointless if your child does not receive an ADHD diagnosis. | Your child’s assessment may still identify other explanations and useful support needs. |
Key Takeaways
- Your child does not need an ADHD assessment simply because they are occasionally distracted, active or impulsive.
- Your child’s persistent difficulties and their effect on everyday functioning are more important than one individual behaviour.
- Your child with severe impairment should be referred for specialist assessment without an unnecessary period of waiting.
- Your child’s symptoms do not need to look exactly the same in every setting.
- Your child can receive useful school and family support before an ADHD diagnosis is made.
- Your child’s assessment should consider ADHD alongside other developmental, emotional and health explanations.
- Your child cannot be diagnosed using one questionnaire, school report or computer test alone.
- Your child aged 6 to 17 may be offered QbTest as additional information during an assessment.
- Your child can still benefit from an assessment even when ADHD is not ultimately diagnosed.
UK Guidance Note
Under current NICE guidance, your child’s ADHD diagnosis should be made by an appropriately trained specialist following a comprehensive assessment. Your child’s relevant symptoms should occur frequently in at least two important settings and cause at least moderate psychological, social or educational impairment before ADHD is diagnosed.
You should not feel that your child must wait for a formal diagnosis before receiving any support. You can continue working with their school, SENCO, GP and other appropriate professionals while assessment is being considered or awaited. Your exact referral pathway may vary according to the services available in your area.
Frequently Asked Questions
1. What signs suggest that your child may need an ADHD assessment?
You should consider professional advice when your child has persistent difficulties with attention, hyperactivity or impulsivity that are greater than expected for their developmental stage and significantly affect everyday life.
2. Does your child need ADHD symptoms at both home and school?
Not specifically. For diagnosis, your child’s symptoms should occur frequently in at least two important settings, which can include family, educational and social environments.
3. Does being easily distracted mean that your child has ADHD?
No. Your child can become distracted because of normal development, tiredness, anxiety, stress, sleep difficulties or another condition. Your specialist considers the persistence, pattern and impact of the difficulties rather than one symptom.
4. Can your child have ADHD if they achieve good grades?
Yes. Your child’s academic results do not by themselves confirm or exclude ADHD. They may still experience significant difficulties with organisation, concentration, relationships, impulse control or the amount of effort required to manage everyday tasks.
5. Who can assess your child for ADHD?
Your child’s diagnosis should be made by a specialist psychiatrist, paediatrician or another appropriately qualified healthcare professional with ADHD diagnostic expertise. Your GP or school may help arrange the referral.
6. What should you prepare for your child’s ADHD assessment?
You can gather examples of your child’s difficulties, relevant school information and details about when the symptoms began and how they affect everyday life. You should also be prepared to discuss your child’s developmental, medical and family history.
7. Could another condition explain your child’s symptoms?
Yes. Your child may have anxiety, autism, learning difficulties, sleep problems or another developmental or health issue that produces similar difficulties. Your child may also have ADHD alongside another condition.
8. How long does your child’s ADHD assessment take?
There is no single assessment length that applies to every child. Your specialist may require more than one appointment or additional information from school or other professionals before reaching a well-supported conclusion.
9. Can a computer test diagnose your child with ADHD?
No. If your child is aged 6 to 17, QbTest may provide additional information during their assessment, but your specialist must interpret it alongside the full standard clinical assessment.
10. What happens if your child does not receive an ADHD diagnosis?
Your child’s assessment may still help explain their difficulties and identify other areas requiring support or further assessment. You should ask your specialist what the findings mean and what next steps are appropriate.
Final Thoughts: Understanding When Your Child May Need an ADHD Assessment
If your child persistently struggles with attention, activity levels or impulse control, you do not need to determine for yourself whether ADHD is the cause. You should consider professional advice when their difficulties appear greater than expected for their developmental stage and are significantly affecting their learning, relationships, development or everyday family life. If you are looking for ADHD assessment for children, you can contact us at London Paediatric Clinic to arrange a consultation and discuss your child’s needs.
References:
- Faraone, S.V. et al. (2021) ‘The World Federation of ADHD International Consensus Statement: 208 evidence-based conclusions about the disorder’, Neuroscience & Biobehavioral Reviews, 128, pp. 789–818. Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC8328933/
- Garcia-Rosales, A., Cortese, S. and Vitoratou, S. (2024) ‘Measurement invariance of Attention Deficit/Hyperactivity Disorder symptom criteria as rated by parents and teachers in children and adolescents: a systematic review’, PLOS ONE, 19(2), article e0293677. Available at: https://pubmed.ncbi.nlm.nih.gov/38394179/
- National Institute for Health and Care Excellence (2018) Attention deficit hyperactivity disorder: diagnosis and management. NICE guideline NG87. Last updated 13 September 2019; reviewed 7 May 2025. Available at: https://www.nice.org.uk/guidance/ng87
- National Institute for Health and Care Excellence (2024) Digital technologies for assessing attention deficit hyperactivity disorder (ADHD). HealthTech guidance HTG729. Published 21 October 2024. Available at: https://www.nice.org.uk/guidance/htg729
- NHS (2025) ‘ADHD in children and young people’. Page last reviewed 19 March 2025. Available at: https://www.nhs.uk/conditions/adhd-children-teenagers/
- Peterson, B.S. et al. (2024) ‘Tools for the diagnosis of ADHD in children and adolescents: a systematic review’, Pediatrics, 153(4), article e2024065854. Available at: https://pubmed.ncbi.nlm.nih.gov/38523599/
- Peterson, B.S. et al. (2024) ‘Treatments for ADHD in children and adolescents: a systematic review’, Pediatrics, 153(4), article e2024065787. Available at: https://pubmed.ncbi.nlm.nih.gov/38523592/
- Spender, K., Chen, Y-W.R., Wilkes-Gillan, S., Parsons, L., Cantrill, A., Simon, M., Garcia, A. and Cordier, R. (2023) ‘The friendships of children and youth with attention-deficit hyperactivity disorder: a systematic review’, PLOS ONE, 18(8), article e0289539. Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC10406331/
- Yegencik, B., Bell, B.T. and Deniz, E. (2025) ‘School-based randomized controlled trials for ADHD and accompanying impairments: a systematic review and meta-analysis’, Frontiers in Psychology, 16, article 1611145. Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC12318974/