Check for both
If one is diagnosed but reading is still a struggle, ask about the other. Look for an evaluator who knows both ADHD and dyslexia well; the overlap is exactly where things get missed.
ADHD Meaning / Dyslexia
shared groundADHD and dyslexia.
One is about attention; the other is about reading. They're genuinely different conditions — and they turn up together far more often than chance would predict, each capable of hiding the other. If reading has always been a battle, it's worth understanding why.
Based on peer-reviewed research
Last updated July 2026
Informational — not a diagnosis
01 — different, and together
Two conditions, one household.
Dyslexia is a specific difficulty with accurate, fluent word reading and spelling — not a matter of intelligence, effort, or eyesight. ADHD is a difference in attention and impulse regulation. They're distinct. But they're frequent housemates: roughly 25 to 40% of people with ADHD also have dyslexia, and the overlap runs both ways. Both are common, affecting somewhere around 5 to 10% of people, and both are strongly heritable.
02 — why they travel together
Shared roots, mutual masking.
Large twin studies point to a clear answer: the two co-occur mainly because of shared genetic risk, not because one causes the other, along with overlapping cognitive traits like working memory, processing speed, and rapid naming. The reading connection is strongest in the inattentive presentation of ADHD. (A fair caveat: most people with one condition have only that one — around a quarter have a second.) The practical trap is masking — inattention can look like a reading block, and a reading block can breed avoidance and inattention — so an evaluation focused on just one condition can miss the other entirely.
03 — the full picture
Assess — and treat — both.
Treat them separately
They need different support — structured, phonics-based literacy help for dyslexia, and ADHD strategies for ADHD. Treating one does not fix the other; each deserves its own plan.
Lead with strengths
A good profile names strengths alongside specific areas for growth — a coherent picture of a mind, not a pile of deficits. That framing is itself protective.
quick answers
Dyslexia questions.
No. Dyslexia is a specific difficulty with reading and spelling; ADHD is a difference in attention and impulse regulation. They're distinct conditions — but they overlap in symptoms and co-occur frequently, which is why they're often confused.
Estimates put the overlap at roughly 25 to 40% — that is, a substantial share of people with ADHD also have dyslexia, and vice versa. Still, most people with one condition have only that one — the overlap, while substantial, is a minority of cases in both directions.
Large twin studies suggest it's mainly shared genetic risk rather than one condition causing the other, plus overlapping cognitive traits like working memory and processing speed. The reading link is strongest with the inattentive presentation of ADHD.
Because each can mask the other — inattention can look like a reading problem, and reading struggles can cause inattention — so an evaluation aimed at only one may miss the second. They also need different treatments, so identifying both matters.
sources & references
Where this comes from.
01
02
Shared neural correlates of dyslexia and ADHD — reports 25–40% bidirectional comorbidity ↗McGrath & Stoodley, J Neurodev Disord 2019
03
how to read the badgescohort studysurvey / cross-sectionalagency / statuteguideline / charitypreliminary