Dyslexia vs ADHD in Children: Key Differences | Cadabam's CDC

Dyslexia vs ADHD in Children: How to Tell the Difference

Dyslexia and ADHD are two of the most common reasons a bright child struggles in school — and one of the most commonly confused pairs in Indian classrooms. They look similar on a report card ("not paying attention," "careless mistakes," "not putting in effort"), but they affect the brain in different ways, need different support, and frequently — about a quarter to a third of the time — show up together in the same child. Telling them apart accurately matters because the wrong intervention for the wrong problem wastes a year of school and a chunk of the child's self-belief.

This guide explains what each condition actually is, the patterns that distinguish them, the overlap pattern (twice-exceptional / 2e), and how assessment at Cadabam's CDC produces an answer you can act on.

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What Is Dyslexia?

Dyslexia is a specific learning difficulty that affects the brain systems used to decode written language. It is not about intelligence — children with dyslexia often have average to above-average reasoning ability. The problem is specifically that the brain takes longer, and uses more effort, to connect letters and sounds, recognise word patterns, and read fluently.

In practical terms, a child with dyslexia may:

• Read slowly and laboriously, often missing or guessing words from context
• Spell inconsistently — the same word wrong in two different ways on the same page
• Mix up similar-looking letters and words well past Year 1
• Find writing painfully slow and exhausting
• Avoid reading aloud or volunteering in class
• Sometimes "compensate" so well in primary school that the difficulty only becomes obvious when text gets denser around Year 3 or 4

Dyslexia sits in the input and output of written language. Spoken language is usually intact; ideas and reasoning are intact. The bottleneck is the reading and writing channel.

What Is ADHD?

ADHD (Attention-Deficit/Hyperactivity Disorder) is a neurodevelopmental condition affecting attention, impulse control, and (often) activity level. It is also not about intelligence — children with ADHD frequently have strong reasoning ability that gets undermined by an inconsistent attention system.

A child with ADHD may:

• Find it hard to start tasks, even ones they want to do
• Forget multi-step instructions almost immediately
• Make "careless" mistakes from speed and inattention, not lack of knowledge
• Get bored quickly; switch between tasks
• Talk excessively, interrupt, fidget
• Hyper-focus on things that interest them while ignoring everything else

ADHD affects every domain that needs sustained attention — maths, reading, writing, conversation, chores, getting dressed. It is broader than dyslexia.

Side-by-Side Comparison

Feature	Dyslexia	ADHD
Core problem	Decoding written language	Sustaining attention and impulse control
Domains affected	Reading, spelling, writing	Reading, maths, writing, behaviour, everyday tasks
Comprehension when text is read aloud	Usually intact	Often poor — child stops attending
Errors when reading	Slow, effortful; substitutes similar words	Skipped lines, lost place, fast-and-sloppy
Maths	Often unaffected (unless dyscalculia co-occurs)	Often affected — impulsive errors, working memory
Outside school	Usually fine	Difficulties carry into home, friendships, sport
Treatment route	Structured literacy (Orton-Gillingham), special education	Behavioural therapy, sometimes medication, school accommodations

The single best discriminator: what happens when text is read aloud? A child with dyslexia who hears the text typically understands it well. A child with ADHD who hears the text may not — because attention drifted halfway through. That difference is one of the first things our assessment looks for.

Can a Child Have Both? (Yes — Often)

Around 25–40% of children diagnosed with dyslexia also meet criteria for ADHD, and vice versa. The two conditions co-occur far more often than chance. This pattern is sometimes called "twice-exceptional" — bright children with two different learning differences, often missed because each masks the other.

Common combined presentation:

• Reasoning ability above average
• Reading is slow, full of errors, and effortful (dyslexia)
• Sustained attention drops mid-sentence (ADHD)
• Spelling is inconsistent (both contribute)
• Maths is fine at concept level but full of operational mistakes (ADHD)
• Behaviour at home looks similar to behaviour at school (ADHD signature)

When both are present, treating only one rarely fixes the school picture. A dyslexic child receiving Orton-Gillingham tutoring will still struggle if their ADHD prevents them from staying in the lesson. An ADHD child receiving behavioural support will still find reading laborious if their dyslexia is untreated. Both need their own intervention.

How Cadabam's CDC Assesses Children for Both

A combined dyslexia-and-ADHD assessment is what we run when either condition is suspected — because ruling out the other is part of the answer.

The typical pathway:

• Parent interview — developmental history, milestones, school reports, behaviour at home
• Cognitive testing — WISC-V to establish reasoning baseline and identify working-memory and processing-speed patterns
• Academic testing — WIAT to measure reading accuracy, reading fluency, reading comprehension, spelling, and written expression
• Reading-specific tests — phonological awareness, rapid automatised naming (RAN), decoding under timed and untimed conditions
• Attention testing — Conners-3 parent and teacher rating scales, continuous performance tasks
• Multidisciplinary review — our psychologist, behavioural therapist, and special educator sit together with the data
• Feedback session — a written report, a face-to-face conversation, and an intervention plan covering school accommodations, remedial education, and (where relevant) behavioural therapy

Most families leave with a clear answer: dyslexia only, ADHD only, both, or neither (sometimes the picture is anxiety or sensory processing, and we say so honestly).

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What Support Helps Each Condition

For dyslexia, the gold-standard approach is structured literacy — methods like Orton-Gillingham that teach the sound-letter system explicitly, in small steps, with multi-sensory repetition. This is the work of our special educators. It is not tutoring; it strengthens the underlying reading circuit.

For ADHD, the package usually includes:

• Behavioural strategies and parent coaching from our behavioural therapists
• Classroom accommodations (preferential seating, extra time, broken instructions)
• For older children, sometimes CBT for ADHD
• Where indicated, medication discussed with a paediatric neurologist

For combined presentations, both packages run in parallel, ideally coordinated under one team so the child's experience stays joined-up.

Frequently Asked Questions

How do I tell if my child has dyslexia or ADHD?

The clearest discriminator is what happens with audio. If your child understands stories you read aloud or audiobooks easily but struggles to read the same text, dyslexia is likely. If your child struggles whether the input is written or audio — losing the thread regardless — ADHD is more likely. Real-world cases often involve both, which is why a formal assessment is the only reliable answer.

Can a child be diagnosed with both dyslexia and ADHD?

Yes — and it is common. Roughly 25–40% of children with dyslexia also meet criteria for ADHD, and vice versa. The combined picture is sometimes called "twice-exceptional." Treating only one rarely resolves the school picture.

Will my child outgrow dyslexia or ADHD?

Neither is "grown out of," but both respond strongly to the right support. Dyslexia is a stable wiring difference; structured literacy teaches the brain to compensate, and reading becomes functional. ADHD continues into adulthood for about half of children, but coping skills and (where appropriate) medication or therapy keep it manageable.

At what age can dyslexia and ADHD be diagnosed?

ADHD can be reliably diagnosed from around age 4 onwards, though milder inattentive presentations are often caught at 7–9 when school demands rise. Dyslexia is typically diagnosed from age 6–7 onwards, once the child has had real reading instruction; risk factors (family history, slow phonological awareness) can be screened earlier.

Where do I start if I am not sure?

Book a comprehensive assessment that covers cognition, academic achievement, reading-specific skills, and attention. A single multidisciplinary assessment can rule both in or out, rather than putting your child through one screening, then another. Cadabam's CDC runs this as a routine pathway.

Why Choose Cadabam's CDC?

Our child psychology, special education, and behavioural therapy teams work side-by-side so a child suspected of dyslexia, ADHD, or both is assessed once — comprehensively — instead of being shuffled between specialists. Learn more about ADHD care or learning disabilities, or book a consultation.

Book Your Child's Assessment | Call: +91 95355 85588