My Child Has ADHD and Dyslexia: How to Know What's Causing What

If your child has been diagnosed with both ADHD and dyslexia - or if you suspect they might have one or both - you've probably found yourself wondering: which is which?

Is the difficulty with reading a dyslexia problem or an attention problem? When they zone out, is that ADHD or something else?

These questions are genuinely hard to answer, and you're not alone in asking them. ADHD and dyslexia are the two most common learning differences in children, and they appear together far more often than most parents realise.

Understanding how they overlap - and how they differ - makes it much easier to support your child effectively.

What ADHD Actually Is

ADHD stands for Attention Deficit Hyperactivity Disorder. But the name is a little misleading. Children with ADHD don't have a deficit of attention - they have difficulty regulating where their attention goes.

The brain's attention system is governed by neurotransmitters - particularly dopamine. In a brain with ADHD, this system works differently. Attention is easily pulled toward things that are stimulating, novel, or immediately rewarding. Sustained focus on tasks that feel routine or effortful - like schoolwork, reading, or following instructions - is harder to maintain.

This shows up in different ways. Some children are visibly hyperactive and impulsive. Others are predominantly inattentive - they seem to drift, daydream, and miss things, without being disruptive. Both are ADHD, but they look very different.

What Dyslexia Actually Is

Dyslexia is a specific difficulty with reading and written language. It's not a general learning problem and it's not related to intelligence. It's a difference in how the brain processes written symbols - particularly the speed and automaticity of letter and word recognition.

Children with dyslexia usually read slowly, effortfully, and often inaccurately - not because they aren't trying, but because the visual processing pathway that handles letter recognition works differently in their brain.

Dyslexia affects roughly 15-20% of the population. It runs in families and it doesn't go away - but with the right support, children learn to read more fluently as their brain's recognition speed improves.

Why They So Often Appear Together

Research suggests that around 30-40% of children with dyslexia also have ADHD, and a similar proportion of children with ADHD have dyslexia. The overlap is significant.

This isn't a coincidence. Both conditions involve differences in brain development and processing. They share some underlying neurological features, and children who are predisposed to one are more likely to also have the other.

Having both doesn't mean your child has two separate problems. It means their brain is wired in a way that affects both reading and attention - and those two things interact with each other.

Understanding the interaction between the two is the key to supporting your child well.

How They Interact - and Why It Matters

Here is where it gets important for parents: ADHD and dyslexia don't just exist side by side. They amplify each other.

Reading is already effortful for a child with dyslexia. It requires sustained concentration and mental energy. For a child who also has ADHD, sustaining that concentration is independently difficult. The result is that reading feels even harder than it would with either condition alone.

On the other side: when a child with ADHD is struggling to focus in class, it's sometimes hard to know whether they're distracted because of their ADHD, or whether they're struggling because a reading task is too difficult and their brain is checking out in response to the frustration.

Inattention during reading is not always an ADHD symptom. It can be a dyslexia symptom. And telling the difference matters.

Signs That Point More to Dyslexia

There are some patterns that point more strongly toward dyslexia as the primary driver of reading difficulty.

• The child reads slowly and effortfully even when they are clearly trying and engaged.
• They make consistent errors on small, common words ("the", "was", "said").
• They can focus well on other activities - games, conversations, building things - but reading specifically is the problem.
• They were slow to learn letter names and sounds. Reading aloud is significantly harder than understanding when someone reads to them.

Signs That Point More to ADHD

Other patterns suggest that attention regulation is a bigger factor.

• The child reads reasonably accurately when they slow down, but rushes and makes careless errors.
• They lose their place frequently and skip lines.
• They can read short passages but lose the thread of longer ones.
• Their performance varies dramatically depending on their interest in the topic. They are easily distracted by things happening around them during reading time.

When Both Are Present

When both ADHD and dyslexia are present, you'll usually see a combination of both patterns - reading that is slow and inaccurate, that the child struggles to sustain, and that produces significant frustration.

The most important thing in this situation is not to chase one diagnosis at the expense of the other. Both need to be acknowledged and supported.

Making reading less effortful helps both the dyslexia and the attention challenge at the same time.

What You Can Do as a Parent

The most useful thing you can do at home is create the conditions where reading is as low-pressure as possible.

Keep sessions short - five minutes is good enough. Choose a time when your child is rested and not already mentally depleted. Remove distractions. Sit nearby and offer calm support rather than correction. Use the Pass rule when they get stuck - say the word, let them repeat it, move on.

You know your child better than any diagnosis does. Trust what you observe.

Getting the Right Support

If you haven't yet had a formal assessment, it's worth pursuing one - both for clarity and to access school support. A good assessment will look at reading ability, attention, processing speed, and working memory, and will give you a clearer picture of what's driving what.

In the meantime, support for reading and support for attention are not in conflict. Anything that makes reading feel safer and more manageable helps with both.

Your child doesn't need to have every answer before you start helping them. They need to know you're on their side, that you understand it's hard, and that you're going to work on it together - one small step at a time.