What's the difference between dyslexia and ADHD?

Dyslexia is a specific reading difficulty caused by trouble processing the sounds in words - it mainly affects reading and spelling. ADHD is a disorder of attention, impulse control, and activity level that affects focus across everything, not just reading. The clearest line: dyslexia is reading-specific and about sound processing, while ADHD is global and about attention and self-regulation.

Can a child have both dyslexia and ADHD?

Yes, and it's common. Research suggests the two co-occur in roughly 25-40% of cases - far more than chance - because they share some genetic and cognitive risk factors. This is why it's important to screen for both rather than stopping at the first diagnosis. Treating only one condition can leave the other to undermine a child's progress.

Why do dyslexia and ADHD look so similar?

Both can produce distractibility during reading, avoidance, careless errors, losing one's place, and homework battles. But the roots differ: a dyslexic child may seem distracted because reading is exhausting for them, while an ADHD child struggles to sustain attention on any extended task. The same surface behaviors can come from opposite causes, which is why behavior alone can't tell them apart.

How do I know if it's dyslexia or ADHD?

The most useful question is whether the trouble is reading-specific or attention-everywhere. If focus is fine for non-reading activities but reading and spelling are hard, that leans toward dyslexia. If attention problems show up across reading, math, chores, and play, that leans toward ADHD. But only a professional evaluation can diagnose either - a pediatrician or psychologist for ADHD, an educational psychologist or school team for dyslexia.

Who diagnoses dyslexia and ADHD?

They're usually evaluated by different professionals. ADHD is typically assessed by a pediatrician, child psychologist, or psychiatrist using rating scales and developmental history. Dyslexia is typically assessed by an educational psychologist, neuropsychologist, or school team through a psychoeducational evaluation of phonological skills, decoding, fluency, and spelling. A thorough evaluation considers both possibilities.

Dyslexia vs. ADHD in Kids: How to Tell the Difference

By Readigo editorial team · 2026-06-22 · 12 min read

Short answer

Dyslexia is a specific difficulty with reading - it comes from trouble processing the sounds in words. ADHD (attention-deficit/hyperactivity disorder) is a difficulty with attention, impulse control, and activity level that affects everything, not just reading. They can look alike at homework time, and they co-occur far more often than chance - research suggests roughly a quarter to a half of kids with one also have the other. But they're separate conditions that need different support, so the goal isn't to pick one from a checklist at home - it's to get a proper evaluation that can sort out what's going on.

Two different conditions

Start with what each one actually is, because the core of each is quite different. Dyslexia is a specific learning disability in reading. The International Dyslexia Association describes it as neurobiological, rooted in a deficit in the phonological part of language - the system that handles the sounds in words. A dyslexic child struggles to break words into sounds and map those sounds to letters, which makes decoding effortful and word recognition slow to become automatic. The difficulty is specific to reading and spelling. In other areas the child may be sharp. (See signs of dyslexia in kids.) ADHD is a neurodevelopmental disorder of attention and self-regulation. Per the CDC and the DSM-5 framework clinicians use, it shows up as inattention (trouble focusing, losing things, careless mistakes), hyperactivity (restlessness, fidgeting, trouble staying seated), impulsivity (interrupting, acting without thinking), or a combination. Crucially, ADHD is global - it affects focus across reading, math, chores, conversations, and play, not reading alone. That's the cleanest conceptual line: dyslexia is reading-specific and about sound processing; ADHD is everywhere and about attention and regulation.

Why they look so similar at homework time

Despite being different conditions, they produce overlapping scenes - which is exactly why parents and teachers confuse them. A child with dyslexia may avoid reading, rush through it, lose their place, seem distracted, fidget, or melt down at homework - not because they can't focus, but because reading is genuinely exhausting for them. The avoidance and restlessness are a response to a task that's too hard, not a primary attention problem. A child with ADHD may also lose their place, skip words, avoid reading, and produce careless errors - not because decoding is hard, but because sustaining attention on any extended task is hard. Their reading errors come from attention lapses, not sound-processing difficulty. So the same surface behaviors - distractibility during reading, avoidance, careless mistakes, homework battles - can come from opposite roots. This is why behavior alone can't tell you which condition you're looking at. You have to look at the pattern underneath the behavior.

The comorbidity: they often travel together

Here's the part that trips up the "which one is it?" framing: it's frequently both. Dyslexia and ADHD co-occur far more often than chance would predict. Research by Willcutt and Pennington and others puts the overlap at roughly 25-40% - that is, a sizable share of children with one condition also meet criteria for the other. They share some underlying genetic and cognitive risk factors, which is part of why they cluster in the same kids and the same families. This matters practically. If you assume your child "just has ADHD" and treat only the attention piece, an underlying dyslexia can go unaddressed - and the reading gap keeps widening. If you assume it's "just dyslexia" and pour on reading intervention, an untreated attention difficulty can blunt the progress. When a child isn't responding to help aimed at one condition, the other is worth ruling in or out. The honest answer to "dyslexia or ADHD?" is often "let's check for both."

Patterns that point one way or the other

No parent can diagnose either condition at home - both require professional evaluation. But these patterns are the kind of thing clinicians weigh, and noticing them helps you ask the right questions. Leans toward dyslexia: - The difficulty is concentrated in reading and spelling, while focus is fine for non-reading activities the child enjoys. - Trouble sounding out new or nonsense words, and spelling worse than reading. - Can attend well to a story read aloud to them, but struggles to read it themselves. - Family history of reading difficulty. Leans toward ADHD: - Attention problems show up everywhere - reading, math, chores, conversations, screen-free play. - Restlessness, impulsivity, and distractibility are present even in tasks the child finds easy. - Reading errors look like careless slips and skipped lines more than sound-by-sound decoding struggles. - Difficulty finishing tasks and following multi-step instructions across the board. Suggests possibly both: - Reading is hard and attention is hard everywhere. - The child made some progress with reading help but stalled, or vice versa. The single most useful question: is the trouble reading-specific, or is it attention-everywhere? That contrast does more sorting than any list of behaviors.

How to get clarity

Because the conditions overlap and need different support, a professional evaluation is the responsible path - not a home guess, and definitely not a self-diagnosis from an online quiz. Different professionals own different pieces. ADHD is typically evaluated by a pediatrician, child psychologist, or psychiatrist, using standardized rating scales (from parents and teachers) and a developmental history. Dyslexia is typically evaluated by an educational psychologist, neuropsychologist, or school assessment team through a psychoeducational evaluation that tests phonological skills, decoding, fluency, and spelling. (See how to get my child tested for dyslexia.) A good evaluation will consider both possibilities rather than stopping at the first label that fits. If your child is being assessed for one, it's reasonable to ask directly: "Could this also be the other? Are you screening for both?" In the U.S. you can request a school evaluation in writing under IDEA, and you can pursue private assessment in parallel. The aim is a clear, complete picture - because the right support depends on naming what's actually there.

Different conditions, different support

Once you know what you're dealing with, the help diverges. Dyslexia responds to structured literacy - explicit, systematic, multisensory instruction in the sound-letter system, often Orton-Gillingham-based (Wilson, Barton, Lindamood-Bell). The earlier and more consistent, the better. (See Orton-Gillingham explained.) ADHD is managed through a different toolkit - behavioral strategies, classroom accommodations, environmental structure, and for some children, medication, decided with a doctor. These target attention and regulation, not reading mechanics. When a child has both, they need both tracks at once: the reading intervention and the attention support. Treating only one leaves the other to undermine progress. None of this is something a parent diagnoses or treats alone, and none of it is something an app provides. This article is here to help you recognize patterns and ask better questions - the diagnosis and the treatment plan belong to the professionals who evaluate your specific child.

Where a reading-practice tool fits (and doesn't)

It's worth being precise about scope, because the overlap invites overclaiming. A daily reading-practice tool addresses the reading side only, and only as a complement to real instruction. Readigo has a child read aloud while it listens and scores accuracy, fluency, pace, and clarity, giving the daily oral-reading practice that builds reading fluency a consistent home structure. For a child with dyslexia, that's a fluency-pillar support that sits alongside structured-literacy intervention - it does not diagnose dyslexia, and it does not replace explicit phonics instruction. And it does nothing for ADHD: it doesn't assess, treat, or manage attention, which is a medical and behavioral matter for your child's clinician. (See the best reading app for dyslexia for that boundary.) The takeaway: dyslexia and ADHD look similar, overlap often, and need different help. Resist the urge to pick one at home. Notice whether the trouble is reading-specific or attention-everywhere, ask whether both are being screened, and let a qualified professional sort it out.