You may start wondering about ADHD if your child seems much more distracted, restless or impulsive than other children at a similar developmental stage. Many children behave this way occasionally, particularly when they are young, tired, anxious or excited, so one behaviour or difficult period does not mean that your child has ADHD.
You should consider the wider pattern of your child’s difficulties. ADHD becomes more relevant when symptoms are persistent, greater than expected for your child’s developmental level, occur across important areas of their life and interfere with learning, relationships or everyday routines.
What Are the Earliest Signs of ADHD?
Possible early signs usually involve persistent difficulties with attention, unusually high activity levels or impulsive behaviour. You may notice that your child struggles to maintain attention, seems much more active than other children at a similar developmental stage or frequently acts before thinking.
Your child does not need to show every feature, and the pattern may change with age and increasing demands at school or home. ADHD symptoms usually begin before age 12, but noticing an individual behaviour early in childhood does not establish that your child has ADHD.
Difficulty Paying Attention
You may notice that your child finds it difficult to stay focused on an activity, particularly when it requires sustained concentration. They might quickly lose interest, move from one task to another or seem not to listen even when you are speaking directly to them.
These difficulties may be more noticeable during activities that require your child to remain focused for longer periods. You may also find that they need frequent reminders or support to return their attention to the task.
Becoming Easily Distracted
Children with ADHD can find it particularly difficult to ignore things happening around them. Your child might be distracted by sounds, movements or other activities, especially when they are trying to focus on something that requires sustained attention.
Once distracted, your child may struggle to return their attention to what they were originally doing. You may notice that they need reminders or extra support to refocus and complete the activity.
Forgetfulness and Losing Track of Tasks
Another early sign can be frequent forgetfulness during everyday routines, such as forgetting instructions, schoolwork or tasks they are expected to complete. You may also notice that your child struggles to remember what they need to do without regular reminders.
Your child may find it difficult to organise tasks or keep track of what they have already completed. As a result, they may regularly leave activities unfinished, even when they understand what is expected of them.
Constant Fidgeting or Movement
If hyperactivity is prominent, your child may seem to have unusually high energy levels and find it difficult to stay still for long. You may notice them fidgeting, tapping their hands or feet, leaving their seat frequently or looking for opportunities to move around.
These behaviours may be particularly noticeable during situations where your child is expected to sit quietly or remain focused. The amount of movement can vary between children and may be more obvious in some settings than others.
Acting Before Thinking
Impulsivity can make it difficult for your child to stop and consider what they are about to do or say. You might notice them interrupting conversations, answering before a question has been finished or finding it difficult to wait for their turn.
Your child may also make decisions quickly without considering what could happen afterwards. These behaviours can vary from one child to another and may become more noticeable in situations where patience, self-control or careful decision-making is needed.
ADHD Signs in Preschool Children
If your child is under 5, a short attention span, high activity level and impulsive behaviour can be part of normal development. You should seek professional advice if these behaviours are unusually pronounced, persistent across different situations or significantly affecting your child’s development or family life.
When Preschool ADHD Signs May Need Assessment
| Behaviour or Concern | What May Be Typical | When to Seek Advice | What Your Healthcare Professional May Consider |
| Short attention span | Brief periods of concentration are common at this age | Difficulty paying attention is persistent or unusually pronounced | ADHD and developmental expectations |
| High activity levels | Preschool children are naturally active | Activity is significantly greater than expected and disrupts daily life | ADHD, sleep difficulties or other factors |
| Impulsive behaviour | Occasional impulsive actions are common | Impulsivity repeatedly causes difficulties across settings | ADHD and emotional or developmental factors |
| Behaviour across settings | Difficulties may occur occasionally | Similar concerns are present at home, nursery or other settings | Patterns across different environments |
| Effect on development | Minor behaviour does not usually affect development | Difficulties interfere with learning, relationships or family life | Developmental and communication needs |
| Other possible causes | Behaviour can change with tiredness or stress | Persistent difficulties need further assessment | Anxiety, sleep problems, communication difficulties and other explanations |
| Severe difficulties | Behaviour may improve as children develop | Significant difficulties should not simply be left to resolve with age | Specialist assessment and appropriate support |
ADHD Signs in Primary School Children
ADHD difficulties can become easier to notice when your child starts school because they are expected to listen, follow instructions, complete activities and remain seated for longer periods. You may notice that your child regularly loses concentration, interrupts lessons, forgets instructions or struggles to complete classroom tasks.
These difficulties may become more noticeable when your child needs to stay focused and organised throughout the school day. You may also receive feedback from teachers about repeated problems with attention, behaviour or completing work.
Signs in Older Children
As your child gets older, difficulties with organisation, concentration and completing tasks can become more noticeable as schoolwork becomes increasingly demanding. You may find that your child struggles to manage homework, remember responsibilities or keep track of what needs to be done.
Your child may also find it difficult to maintain attention during activities that require sustained mental effort. These challenges can affect schoolwork and daily routines, particularly when your child needs to plan, organise and complete tasks independently.
Can ADHD Look Different in Girls?
ADHD can be overlooked when your child’s main difficulties involve attention, organisation and forgetfulness rather than obvious hyperactivity or disruptive behaviour. This can occur in girls, who are recognised with ADHD less often than boys and may have less noticeable inattentive symptoms.
You should focus on how persistently your daughter struggles and how these difficulties affect her learning, relationships and daily activities rather than looking only for visible hyperactivity. ADHD should be assessed according to your child’s individual symptoms and impairment rather than assumptions based on sex.
Do Your Child’s Signs Need to Appear in Different Situations?
Yes. For your child to receive an ADHD diagnosis, their symptoms should occur frequently in at least two important settings, such as at home, school or another relevant social environment. Their symptoms should also cause at least moderate psychological, social or educational impairment rather than simply being noticeable to you or other people.
Your child may behave differently in different settings because each environment places different demands on them and provides different levels of structure or support. Information from you, your child and their school helps your specialist determine whether a persistent underlying pattern is affecting more than one part of your child’s life.
Is It ADHD or Normal Childhood Behaviour?
Children can sometimes be energetic, distracted or impulsive without having ADHD. These behaviours may be more noticeable when your child is tired, anxious, stressed or unwell.
- Normal behaviour: Occasional restlessness or distraction can be part of typical childhood development.
- Persistent symptoms: Ongoing difficulties may need further assessment.
- Developmental level: Behaviour should be considered in relation to your child’s age and development.
- Daily impact: Concerns are more significant when they affect learning, relationships or family life.
- Professional advice: Seek guidance when difficulties are persistent and significantly affect everyday activities.
An assessment can help distinguish typical childhood behaviour from difficulties that may need further support.
How Can Early ADHD Signs Affect School?
Attention difficulties can make it harder for your child to follow instructions, complete schoolwork and stay focused during lessons. They may need extra reminders or support to remain engaged with tasks and finish their work.
Hyperactivity and impulsivity may also make classroom routines more challenging. Your child may find it difficult to wait for their turn, remain seated or work quietly when expected to do so.
Can ADHD Affect Friendships and Family Life?
Impulsive behaviour, frequent interruptions and difficulty managing activity levels can sometimes create challenges in your child’s friendships and family routines. These behaviours may make it harder for your child to interact calmly with others, follow family routines or manage everyday social situations.
Understanding that these difficulties may be related to ADHD can help you respond in a more constructive and supportive way. If these challenges are affecting your child’s relationships or daily life, seeking appropriate professional support can help you understand their needs and identify useful strategies.
When Should You Consider an ADHD Assessment?
You should consider professional advice if your child’s difficulties with attention, activity levels or impulse control persist and significantly affect their education, relationships, wellbeing or everyday family life. Feedback showing persistent difficulties in more than one important setting can provide important information when your child’s need for specialist assessment is considered.
An assessment does not assume that your child has ADHD. It can help determine whether ADHD, another developmental or emotional condition, a learning difficulty, sleep problems or a combination of factors may be contributing to what you are seeing.
What Happens During Your Child’s ADHD Assessment?
Your child’s specialist assessment should consider their developmental and mental-health history, current symptoms and the effect their difficulties have on everyday life. Your specialist will usually speak with you and your child and obtain information from your child’s school or other people who know them well so that they can understand how your child functions in different settings.
Questionnaires can provide useful information, but they cannot diagnose your child with ADHD on their own. If your child is aged 6 to 17, QbTest may be used as an additional tool to support their assessment, but your child still requires a standard clinical assessment by an appropriately qualified healthcare professional.
Could Something Else Look Like ADHD?
Your child’s difficulties with concentration, activity or impulse control may have another explanation or may occur alongside ADHD. Anxiety, autism, learning difficulties, language or communication difficulties, sleep problems and other emotional, developmental or health concerns can sometimes produce overlapping difficulties.
Your specialist should therefore consider your child as a whole rather than trying to match individual behaviours to an ADHD checklist. Identifying coexisting needs is also important because your child may require support for more than one difficulty.
What Happens After ADHD Is Identified?
If your child is diagnosed with ADHD, their support should reflect their age, individual difficulties and the effect symptoms have on everyday life. You may work with healthcare professionals and your child’s school to consider environmental adjustments, ADHD-focused family support and, when clinically appropriate, medication.
If your child receives an ADHD diagnosis, you can discuss specialist ADHD treatment for children in London to understand which environmental, educational, family or medical approaches may be suitable for their individual needs. You should continue reviewing your child’s support as their development, school demands and circumstances change.
Myth vs Fact
| Myth | What You Should Know |
| Your energetic preschool child probably has ADHD. | Your young child may naturally have high activity levels, so you should consider persistence, developmental level and everyday impairment. |
| Your child must be hyperactive to have ADHD. | Your child may mainly struggle with attention, forgetfulness and organisation. |
| Your child has ADHD because they are easily distracted. | Your child may be distracted because of tiredness, anxiety, stress or another difficulty. |
| Your child can have ADHD even if symptoms occur only in one situation. | Your child’s diagnostic symptoms should occur across two or more important settings. |
| Your daughter cannot have ADHD if she is quiet. | Your daughter may experience less obvious inattentive difficulties without prominent hyperactivity. |
| Your child’s teacher can diagnose ADHD. | Your teacher can provide valuable observations, but your child needs specialist assessment. |
| One questionnaire can confirm your child’s ADHD. | Your child requires a comprehensive clinical assessment rather than a single score. |
| QbTest can diagnose your child automatically. | Your child aged 6 to 17 may have QbTest as additional evidence, but specialist assessment remains necessary. |
Key Takeaways
- Your child may show difficulties with attention, hyperactivity, impulsivity or a combination of these features.
- Your child does not need to be visibly hyperactive for ADHD to be considered.
- Your child’s symptoms usually begin during childhood, typically before age 12.
- Your child’s occasional distraction or high energy does not automatically indicate ADHD.
- Your child’s difficulties need to be considered across more than one important setting.
- Your child may behave differently at school and at home even when ADHD affects both settings.
- Your child may have another condition that resembles ADHD or occurs alongside it.
- Your child’s teacher can provide useful information about learning, organisation and classroom behaviour.
- Your child cannot be diagnosed with ADHD using one questionnaire or computer test alone.
- Your child should receive a specialist assessment when persistent difficulties significantly affect everyday life.
UK Guidance Note
Your child’s ADHD diagnosis should be made by a specialist psychiatrist, paediatrician or another appropriately qualified professional with ADHD expertise. Your child should not be diagnosed solely from a questionnaire, teacher report, brief observation or computer-based test.
If your child is aged 6 to 17, QbTest can be used as an option to support their assessment, but it must be combined with standard clinical assessment. Your child’s symptoms should occur in at least two important settings and cause clinically important impairment before an ADHD diagnosis is made.
Frequently Asked Questions
1. At what age can your child first show signs of ADHD?
Your child’s ADHD symptoms usually begin during childhood and typically start before age 12. Signs may be noticeable when your child is younger, but high activity levels and short attention spans are particularly common under age 5, so their developmental stage must be considered carefully.
2. Can your child have ADHD without being hyperactive?
Yes. Your child may mainly have difficulties with attention, organisation, forgetfulness and completing tasks without prominent hyperactivity. These difficulties can sometimes be less obvious to other people.
3. Does being easily distracted mean your child has ADHD?
No. Your child may become distracted because they are tired, anxious, stressed, bored or affected by another difficulty. ADHD is considered when their symptoms are persistent, excessive for their developmental level and significantly affect everyday functioning.
4. Can your child’s ADHD symptoms change as they grow?
Yes. Your child’s pattern of difficulties and their impact may change as developmental and educational demands increase. You may notice organisational and planning difficulties becoming more apparent as your child is expected to work more independently.
5. Can your child have ADHD symptoms at home but not at school?
Your child may behave differently at home and school because the structure, expectations and support differ between environments. However, an ADHD diagnosis normally requires symptoms to occur frequently in at least two important settings, so difficulties confined to one setting need careful assessment for other possible explanations.
6. Can another condition resemble ADHD in your child?
Yes. Your child’s difficulties may be associated with anxiety, autism, learning or communication difficulties, sleep problems or another developmental or health condition. Your child may also have one of these conditions alongside ADHD.
7. Does poor concentration mean your child has ADHD?
No. Your child’s occasional difficulty concentrating is not enough for an ADHD diagnosis. You should consider seeking advice when concentration problems persist, are greater than expected for their developmental level and interfere significantly with everyday life.
8. Can your child’s teacher help identify possible ADHD?
Yes. Your child’s teacher or SENCO can provide useful information about their concentration, organisation, behaviour, relationships and ability to complete schoolwork. Your specialist can compare this information with what you observe in other settings.
9. What should you do if you think your child may have ADHD?
You can speak with your child’s teacher, SENCO, GP, paediatrician or another appropriate healthcare professional. Keeping examples of the difficulties you have noticed can help when your child’s need for specialist assessment is considered.
10. Can an early ADHD assessment help your child?
An assessment can help you understand the reasons for your child’s difficulties and identify appropriate educational, family or healthcare support. Assessment does not automatically mean that your child will receive an ADHD diagnosis.
Final Thoughts: Recognising Early Signs of ADHD
Recognising persistent difficulties with your child’s attention, activity level or impulse control can help you understand when they may need additional support. You should look at the overall pattern rather than one behaviour, including how long your child’s difficulties have lasted, whether they occur in different settings and how much they affect learning, relationships and everyday family life.
If you are concerned about your child’s ongoing symptoms, you can seek a specialist assessment to understand whether ADHD or another difficulty may be contributing. If you’re considering ADHD treatment for children, you can get in touch with us at London Paediatric Clinic.
References:
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- Halperin, J.M. and Marks, D.J. (2019) ‘Practitioner Review: Assessment and treatment of preschool children with attention-deficit/hyperactivity disorder’, Journal of Child Psychology and Psychiatry, 60(9), pp. 930–943. Available at: https://pubmed.ncbi.nlm.nih.gov/30690737/
- Hinshaw, S.P., Nguyen, P.T., O’Grady, S.M. and Rosenthal, E.A. (2022) ‘Annual Research Review: Attention-deficit/hyperactivity disorder in girls and women: underrepresentation, longitudinal processes, and key directions’, Journal of Child Psychology and Psychiatry, 63(4), pp. 484–496. Available at: https://pubmed.ncbi.nlm.nih.gov/34231220/
- 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
- NHS (2025) ‘ADHD in children and young people’. Page last reviewed 19 March 2025. Available at: https://www.nhs.uk/conditions/adhd-children-teenagers/
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- Ros, R. and Graziano, P.A. (2018) ‘Social functioning in children with or at risk for attention deficit/hyperactivity disorder: a meta-analytic review’, Journal of Clinical Child & Adolescent Psychology, 47(2), pp. 213–235. Available at: https://pubmed.ncbi.nlm.nih.gov/28128989/
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