ADHD in children: signs, diagnosis and how to support your child

Does your child forget their school things, seem not to hear you when you talk, start one activity and soon drop it for another?

Or maybe they're almost always on the move, interrupt conversations and have a very hard time waiting their turn.

**“Could my child have ADHD?”**

But there's an important difference between showing some of these traits occasionally and having Attention-Deficit/Hyperactivity Disorder (ADHD).

Children can be restless, distracted, impulsive or have trouble concentrating at certain moments. In ADHD, however, these behaviors form a persistent pattern that can interfere with school, family and social life.

What is ADHD?

Attention-Deficit/Hyperactivity Disorder, known as ADHD, is a neurodevelopmental disorder.

It usually begins in childhood and can continue through adolescence and adulthood.

Its main features relate to three groups of behaviors:

• inattention;
• hyperactivity;
• impulsivity.

But that doesn't mean every child with ADHD will be extremely restless.

The disorder can present in different ways.

Not every child with ADHD is hyperactive

This is one of the main reasons some children can go years without a diagnosis.

ADHD may present predominantly with:

Inattention: when difficulties with concentration, organization and forgetfulness predominate.

Hyperactivity and impulsivity: when behaviors such as restlessness, difficulty waiting and acting before thinking predominate.

Combined presentation: when significant traits from both groups appear.

That's why the image of a child with ADHD who necessarily “can't sit still” doesn't represent every case.

What can the signs of ADHD in children be?

The signs vary a lot from child to child.

In the area of attention, behaviors like these may appear:

• difficulty keeping attention on certain activities;
• seeming not to listen when someone speaks to them directly;
• often forgetting things and commitments;
• losing school supplies or toys;
• getting distracted easily;
• having trouble organizing tasks;
• starting activities and having trouble finishing them.

With hyperactivity and impulsivity, these may appear:

• constantly moving hands or feet;
• getting up when they should stay seated;
• difficulty playing or doing activities quietly;
• talking excessively;
• answering before a question is finished;
• difficulty waiting their turn;
• interrupting other people;
• acting without fully considering the consequences.

None of these behaviors, on its own, confirms ADHD.

“But almost every child does that…”

Exactly.

A child may forget their backpack.

They may interrupt a conversation.

They may lose focus during a boring task.

They may run around the house when excited.

All of this can happen without any disorder.

What professionals look at is the overall pattern of behavior, its intensity, duration, frequency and the impact it has on the child's life.

According to the CDC, it's normal for children to have trouble paying attention or controlling their behavior from time to time. In ADHD, the symptoms are persistent and can cause significant difficulties at home, at school or in relationships with other people.

ADHD can't be diagnosed from an internet video

Symptom lists can help a family notice that something deserves attention.

But they can't be used to reach a diagnosis.

There's no blood test, MRI, online test or single questionnaire that can state:

**“This child has ADHD.”**

Diagnosis is a clinical process made up of several steps.

How is the diagnosis made?

The professional needs to get to know the child as a whole.

During the assessment, information may be considered from:

• parents or guardians;
• teachers;
• other caregivers;
• school history;
• child development;
• behavior at home;
• behavior in other settings;
• health history.

A particularly important point is that symptoms should not appear in just one situation.

For example:

A child who has great difficulty only in a particular class, or only at home, does not automatically receive an ADHD diagnosis.

The guidelines used for assessment consider symptoms present in two or more settings, such as home, school and social situations. They also need to cause significant impairment in the child's functioning.

How long do the signs need to have been present?

For diagnosis, professionals also assess the duration and history of the symptoms.

The guidelines used by the American Academy of Pediatrics consider, among other criteria, symptoms present for more than six months and evidence that they began before age 12.

This helps distinguish ADHD from temporary changes in behavior.

Can other things look like ADHD?

Yes.

And that's exactly why a proper assessment is so important.

Sleep problems, anxiety, depression and some learning difficulties, for example, can produce symptoms similar to those seen in ADHD.

During the evaluation, the professional may also assess vision, hearing, development, medical history and other health issues.

**“Does my child have ADHD or not?”**

It's understanding what is going on with that particular child.

How can ADHD show up at school?

The classroom tends to make some difficulties more visible because it requires organization, attention, waiting and following several instructions.

The child may:

• forget homework;
• lose school supplies;
• have trouble following long instructions;
• make careless mistakes;
• start an activity and not finish it;
• interrupt classmates;
• get up frequently;
• have trouble waiting their turn;
• perform below what they could, despite understanding the content.

But school difficulties don't automatically mean ADHD.

The school can provide important information for the assessment precisely because it allows the child's behavior to be compared in another setting.

And at home?

Sometimes what looks like “laziness”, “stubbornness” or “not wanting to obey” may involve real difficulties with organization and impulse control.

Imagine asking:

“Put your toys away, put on your sneakers, grab your backpack and come to the door.”

The child starts putting the toys away.

Finds a toy car.

Starts playing.

Five minutes later, they're in their room and have completely forgotten the backpack.

This doesn't automatically mean ADHD.

But when similar situations are very frequent and happen in several settings, they can be part of the information considered during an assessment.

ADHD is not a lack of intelligence

A child with ADHD can learn, develop skills, form bonds and show great ability in different areas.

The difficulty is mainly related to functions such as attention, organization, impulse control and self-regulation — not to how intelligent the child is.

“If they really tried, they could do it.”

may oversimplify a much more complex difficulty.

It's also not simply “a lack of limits”

Limits and routine are important for all children.

But ADHD isn't simply caused by permissive parenting or a lack of discipline from parents.

A child with the disorder still needs rules, responsibilities and limits — but may need different strategies to organize their behavior and meet those expectations.

How to help a child with ADHD day to day?

Even after a diagnosis, there's no single strategy that works for every child.

Some commonly used measures include:

• creating predictable routines;
• breaking big tasks into smaller steps;
• giving short, clear instructions;
• reducing distractions during activities that require concentration;
• using visual reminders;
• recognizing positive behaviors;
• setting clear, consistent rules;
• working in partnership with the school;
• having regular follow-up with the professionals in charge.

The plan should be individualized according to the child's age, needs and difficulties.

Is there treatment?

Yes.

ADHD can be monitored and treated.

Options may include behavioral interventions, parent guidance, school strategies and medication, depending on the child's age, symptoms and needs.

For young children, the approach is different from the one used for older children.

The CDC states that, for children under 6 years old, behavior therapy — especially parent training in behavior management — is recommended as the first approach before medication.

Any decision about treatment should be made together with the professionals who follow the child.

Is medication mandatory?

No.

There's also no single answer that fits every child.

Treatment depends on factors such as:

• age;
• severity of symptoms;
• impact on the child's life;
• presence of other conditions;
• response to interventions;
• the health team's assessment.

When medication is indicated, its use needs to be monitored by a qualified professional.

The important thing is to avoid both the idea that “every child with ADHD needs to take medication” and the claim that medication should never be used.

The decision is individual.

How to talk about ADHD with your child?

The diagnosis doesn't have to become a label.

Or:

“We need to find a better way for you to remember your tasks”

“You never pay attention.”

Children need to understand their difficulties, but also recognize their strengths.

ADHD is one aspect of how they function — not their whole identity.

When to seek an assessment?

It's worth first talking to the pediatrician or another qualified health professional when difficulties with attention, hyperactivity or impulsivity:

• happen frequently;
• persist for several months;
• are more intense than expected for the child's age;
• appear in more than one setting;
• significantly affect schoolwork;
• make friendships or family life harder;
• cause distress for the child;
• are worrying parents or teachers.

The pediatrician can carry out an initial assessment and, when necessary, refer the child to professionals such as a child psychiatrist, child neurologist, psychologist or other specialists involved in child development.

Don't turn a suspicion into a label

Noticing signs and seeking help is important.

But there's a huge difference between saying:

“We're noticing some difficulties and we're going to look into it.”

**“My child is ADHD because they can't sit still.”**

Children are constantly developing.

The diagnosis needs to consider age, history, family context, school, development and other possible explanations.

When ADHD is present, identifying and understanding these difficulties can help the family, school and professionals find better-suited strategies for that child.

And when it isn't, a good assessment can also help uncover what is really going on.

The goal should never be just to find a name.

It's to help the child learn, connect with others, develop and receive the support they need.

Key takeaways

• ADHD is a neurodevelopmental disorder.
• A child doesn't have to be hyperactive to have ADHD.
• Distraction or restlessness on their own don't confirm the disorder.
• There's no single test that can diagnose ADHD.
• The assessment considers behavior in different settings.
• Other conditions can produce similar symptoms.
• There are different options for follow-up and treatment.
• The diagnosis doesn't define who the child is.

Sources consulted

Centers for Disease Control and Prevention (CDC)

Attention-Deficit / Hyperactivity Disorder (ADHD): symptoms, diagnosis and treatment.

American Academy of Pediatrics — HealthyChildren.org

Guidance materials for families on diagnosing and managing ADHD in childhood.

American Academy of Pediatrics clinical guideline

Recommendations for the evaluation, diagnosis and treatment of ADHD in children and adolescents.

Disclaimer: This content is for educational purposes and does not replace consultation, assessment, diagnosis or individual guidance from health professionals.