ADHD and Dyslexia: Why Do They So Often Co-occur? The Perspective of Child and Adolescent Psychiatrist Dr. Thomas E. Brown
Does your child struggle with both paying attention and reading? Are assignments constantly left unfinished, and do they mix up letters? If this scenario sounds familiar, you are not alone. Attention-Deficit/Hyperactivity Disorder (ADHD) and dyslexia co-occur in the same child with surprising frequency. This situation can be confusing for parents: "Is the problem attention deficit, or a reading difficulty? Or both?"
The key to understanding this complex relationship lies in recognizing a common underlying mechanism. Dr. Thomas E. Brown, an ADHD expert from the Yale University School of Medicine, offers a perspective that sheds light on this issue: The problem lies in the brain's "management system."
The Brain's Orchestra Conductor: Executive Functions
Dr. Brown likens the brain to a complex orchestra and "executive functions" to its conductor. Executive functions are a set of mental skills located in the brain's prefrontal cortex that allow us to regulate our thoughts, actions, and emotions. These skills include planning, organizing, prioritizing, focusing attention, sustaining effort, and managing emotions.
- In ADHD, the orchestra conductor (executive functions) is inattentive. They struggle to focus on different tasks, prioritize what's important, and ignore distractions. This is why the child can't sit still, forgets homework, or can't start and finish a task.
- In dyslexia, the problem is more specific. A particular musician in the orchestra (the phonological processing center related to reading) cannot play the notes (letters and sounds) correctly and fluently.
So Why Do They Co-occur?
According to Dr. Brown, the reason for the high co-occurrence rate between ADHD and dyslexia (30-50%) is that both conditions are affected by disruptions in this management system. When the orchestra conductor (executive functions) fails to do their job well, not only is the general order of the orchestra disrupted, but the job of an already struggling musician (the dyslexic brain) becomes even harder.
For example, reading is already a cognitively demanding task. If a child also has executive function issues like focusing attention and holding information in working memory, the task of matching letters with sounds and reading words fluently becomes nearly impossible. The child is like a musician who both struggles to read the notes and cannot hear the conductor's instructions.
What Should Parents Do?
- Comprehensive Evaluation is Key: If you see signs of both ADHD and dyslexia in your child, consulting an expert who can evaluate both conditions is critical. Treating one while ignoring the other is like solving only half of the puzzle.
- Separate Your Approach: During reading homework, remember that this is a decoding problem rather than an attention problem. Be patient and use multisensory and gamified tools like Applexia. For other tasks requiring attention, apply ADHD strategies (breaking tasks into small parts, using timers, reducing distractions).
- Focus on Strengths: Remember, neither condition is related to intelligence. Discover and support your child's strengths, such as creativity, problem-solving, or artistic talents.
Conclusion: Your child's brain is like an orchestra with both an inattentive conductor and a special instrument. The perspective of Dr. Thomas E. Brown reminds us to see the whole picture, not just its parts. With the right diagnosis and comprehensive support, you can help this orchestra make beautiful music.
Bibliography:
- Brown, T. E. (2005). Attention Deficit Disorder: The Unfocused Mind in Children and Adults. Yale University Press.
- Shaywitz, S. E., & Shaywitz, B. A. (2003). Dyslexia (specific reading disability). Biological psychiatry, 54(3), 226-234. (On ADHD & Dyslexia comorbidity)
- Willcutt, E. G., & Pennington, B. F. (2000). Comorbidity of reading disability and attention-deficit/hyperactivity disorder: differences in cognitive profiles. Journal of learning disabilities, 33(2), 179-191.