Signs of ADHD in toddlers and young children

Searching for the signs of ADHD in toddlers usually means you have a very busy little one, or someone has made a comment that has stayed with you. It is a reasonable thing to wonder about. It is also one of the hardest questions to answer in the early years, because so much of what we think of as ADHD is simply how young children are. This guide explains what a paediatrician looks for between the ages of 2 and 5, why doctors tend to wait, and what you can do in the meantime.

Why ADHD is hard to spot in toddlers

Attention, patience and self-control develop slowly over the first years of life. Toddlers are meant to explore, climb, grab, and move from one thing to the next. The NHS points out that many children under 5 are easily distracted, impulsive and full of energy without having ADHD, and that tiredness, anxiety or stress can cause very similar behaviour.

So the question is never "does my child do these things?" Almost all young children do. It is "are they doing them far more than other children the same age, everywhere, all the time, in a way that is making life hard?"

Signs of ADHD in a 2 year old

At 2, it is rarely possible to say anything firm about ADHD. Things you might mention to your health visitor include a child who:

• never seems to settle, even with a favourite toy or activity
• has almost no sense of danger, well beyond other toddlers
• sleeps very poorly over a long period
• is far more active than other children in every setting

Many of these have other explanations, and many very active 2 year olds turn out to have no ongoing difficulties at all.

Signs of ADHD in a 3 year old

By 3, many children are starting to join in short group activities and wait a little, though this varies a great deal. Signs that may be worth noting are a child who:

• cannot stay with any activity for more than a moment
• is constantly on the move, climbing and running, even when others are calm
• hits, grabs or pushes far more often than peers, and cannot seem to stop
• is regularly described by nursery staff as much harder to manage than others

Signs of ADHD in a 4 year old

At 4, preschool asks more of children: listening at circle time, following simple rules, taking turns. Signs that stand out may include a child who cannot sit for circle time at all, constantly interrupts, runs off in public, has frequent accidents through impulsive behaviour, or struggles with friendships because they cannot wait or share.

What are the signs of ADHD in a 5 year old?

Starting school is often when things become clearer. Reception asks children to sit on the carpet, follow instructions, and work alongside others. A 5 year old with ADHD may be constantly out of place, unable to listen to a story, calling out, touching others, losing things, or very slow to settle to tasks. The same difficulties are usually seen at home too.

BZ Clinic sees children from age 5, so this is often the point where families come to us. Our guide to the signs of ADHD in children covers the school years in more detail.

Why ADHD is rarely diagnosed before 5

NICE guidance on ADHD does cover children under 5, but it takes a careful approach in this age group. For a young child with ADHD symptoms, NICE recommends that the first step is an ADHD-focused group programme for parents or carers. It also says that ADHD medication should not be offered to any child under 5 without a second opinion from a specialist service with expertise in very young children.

Alongside this, NICE asks that a diagnosis is made only when symptoms are frequent, present in more than one setting, and causing at least moderate difficulty, with criteria adjusted for the child's age. In the toddler and preschool years, that line is very hard to draw. For these reasons, many specialists prefer to watch and support first, and a formal diagnosis is usually made once a child is at school.

What you can do meanwhile

• Keep notes. Write down what you see, where and when, and how it compares with other children. This is very useful later.
• Talk to your health visitor or GP. They can check development, hearing, speech and sleep, which can all affect behaviour.
• Talk to nursery or preschool. Ask what they see and whether extra support is possible.
• Protect sleep and routine. Regular bedtimes, predictable days and plenty of active play help most young children.
• Ask about parent programmes. Your GP or local family hub may know of courses in your area.

When BZ Clinic can help

BZ Clinic assesses children and young people aged 5 to 18. If your child is now 5 or older and the difficulties are still there at home and at school, you can contact us directly; no GP referral is needed. Our doctors are consultant paediatricians, so they look at your child's general health as well as attention and behaviour, including sleep, hearing and early development.

You can try our free ADHD questionnaire first, read about a private ADHD assessment for your child, or call Camille on 07957 909754.

Questions parents ask