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ADHD and Dyslexia: The Hidden Double Diagnosis Affecting Millions of Adults

May 24, 2025
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Adults with ADHD face an overlooked challenge that's quietly complicating their daily lives: undiagnosed dyslexia. Recent research suggests that up to 40% of people with ADHD also have dyslexia, yet many adults remain unaware they're managing both conditions simultaneously.

The Masking Effect

The relationship between ADHD and dyslexia creates a diagnostic puzzle. ADHD symptoms often overshadow dyslexia signs, leading to what researchers call "diagnostic masking." When adults struggle with reading comprehension or written communication, it's frequently attributed to ADHD-related attention difficulties rather than underlying language processing differences.

Dr. Sally Shaywitz's groundbreaking work at Yale demonstrates that this overlap isn't coincidental. Both conditions involve similar brain regions responsible for executive functioning and phonological processing. The result? Adults who've learned to compensate for reading difficulties may never realize their struggles stem from dyslexia…

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