Attention deficit hyperactivity disorder is a neurodevelopmental condition. It affects how a child regulates attention, activity and impulse. The signs are present from early childhood, they show up in more than one setting, and they cause real difficulty rather than occasional inconvenience. Our page on what ADHD is gives the fuller background.
Here we explain out the signs of ADHD in children that parents most often notice, including the ones that are easy to miss, and explains when it is worth seeking an assessment.
The Three Presentations of ADHD
ADHD is not a single picture. The diagnostic criteria describe three presentations, and knowing which one you are looking at changes what you notice. The full range of ADHD symptoms is set out separately, and NICE guideline NG87 has a plain English summary for families. In children the signs tend to group as follows.
The predominantly inattentive presentation is the quiet one. This child drifts, forgets, mislays things and cannot get started. Nothing is disrupted, so nothing is raised.
The predominantly hyperactive and impulsive presentation is the one most people picture. This child cannot stay seated, talks constantly, interrupts and acts before thinking.
The combined presentation includes features of both, and it is the one most commonly diagnosed in children.
A child can be exhausting at home and almost invisible at school, or the other way round. Both are consistent with ADHD.
Signs of ADHD in Children at Home
Parents rarely arrive with a list of symptoms. They arrive with a description of how hard the day is.
Mornings and bedtimes are often the worst points. Getting dressed can take an hour with a reminder every few minutes, not because the child is refusing but because attention keeps sliding off the task. Instructions with more than one step tend to fall apart somewhere in the middle.
Homework is a recurring flashpoint. The work itself is frequently within the child’s ability. Starting it is the problem, and so is staying with it once started.
Emotional intensity is one of the most under-recognised signs of ADHD in children. Reactions arrive quickly and at full volume, then pass just as fast, leaving everyone else still recovering. This is emotional regulation rather than temper, and it responds to understanding rather than to consequences.
Time is another one. Many children with ADHD have very little sense of how long something takes or how much of it has passed. Ten minutes and an hour feel much the same from the inside, which is why deadlines arrive as a surprise and why being asked to hurry rarely helps.
Alongside all of this, parents describe a constant background of lost items, unfinished projects, forgotten kit and a bedroom that cannot stay tidy for more than a day.
Signs of ADHD in Children at School
ADHD has to show up in more than one setting, so what happens at school matters. The signs there are often hidden inside familiar teacher phrases.
Capable but does not apply herself. Rushes his work. Chatty. Needs constant reminders. Excellent in one to one, struggles in a group. Careless mistakes. Any of these can describe a child who is trying hard and cannot sustain attention.
A gap between what a child can explain out loud and what they can produce on paper is worth noticing. So is underachievement relative to obvious ability, particularly where it has been put down to laziness or attitude.
As with home, the unstructured parts of the day are revealing. Break, lunch, transitions between lessons and group work all place demands on self-regulation that a structured lesson does not.
Signs of ADHD in Girls Can Look Different
Girls are more likely to have the inattentive presentation, and they are diagnosed later than boys as a result. Where hyperactivity is present, it is more often internal. A girl may look calm and still be unable to settle her thoughts.
Many girls also work hard to compensate. Lists, elaborate systems, staying up late to finish work that should have taken an hour. The result looks like coping, and the effort behind it goes unseen. Anxiety is a common companion, and it is sometimes treated on its own while the ADHD underneath it is never considered.
Behaviour That Can Look Like ADHD
Not every child who is inattentive or restless has ADHD, and a responsible assessment has to rule other things out.
Poor sleep produces inattention and irritability in any child. Undetected hearing or vision difficulties can look like not listening. Anxiety, low mood and the effects of a difficult period at home or at school can all affect concentration. An undiagnosed specific learning difficulty such as dyslexia can make a child avoid work in a way that resembles inattention. Autism can look similar in some respects and frequently occurs alongside ADHD, which is why the two are often assessed together.
This is why an online questionnaire is a starting point rather than an answer. A proper assessment considers the alternatives before reaching a conclusion.
When to Seek an Assessment for Your Child
It is reasonable to seek an ADHD assessment for your child when the difficulties have been present for at least six months, appear in more than one setting, and are having a real effect on learning, friendships or family life.
You do not need to wait for the school to raise it. Parents notice these things first more often than not, and what you see at home is legitimate evidence.
It also helps to gather a little before you start. A few dated notes about what you see, any school reports that mention concentration or organisation, and a note of anything similar in the wider family will all be useful. Bring your own questions too. An assessment should leave you understanding your child better, whatever the outcome is.
ADHD Health Clinic: Assessing ADHD in Children
We assess ADHD in children and young people aged 6 to 17, online across the UK or in person at our Marylebone clinic. The assessment is a 90 minute appointment, and it draws on your account as parents alongside information about how your child manages at school.
Our child team includes consultant child and adolescent psychiatrists, chartered psychologists and specialist practitioners. The clinicians involved are matched to the assessment chosen.
We are CQC registered. We follow NICE guidance. You do not need a GP referral. Appointments are usually available within one to two weeks, and the report is normally with you within ten days. The report can be used to support requests for help at school. If appropriate, we can also discuss treatment. Our fees are published in full, and you are welcome to contact us if you would like to talk it through first.
