Are dyslexia and ADHD related? Yes. Dyslexia and ADHD are related because they often occur together, but one does not directly cause the other. The International Dyslexia Association explains that ADHD and dyslexia are separate conditions that can coexist, and research estimates that around 30% of individuals with one condition may also have the other. In simple terms: a child can have dyslexia, ADHD, or both. What is dyslexia? Dyslexia is a specific learning disability that