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Are dyslexia and ADHD linked by shared genetics? 

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Updated
ByMy Patient Advice
Author: Dr. Rebecca Fernandez, MBBS

Researchers have found increasing evidence that dyslexia ADHD shared genetics may help explain why the two conditions often occur together. Both dyslexia and ADHD are influenced by multiple genes, many of which are involved in brain development, language processing, and attention regulation. This genetics link dyslexia ADHD helps account for the high rate of co-occurrence seen in children and adults. 

Dyslexia affects reading accuracy, spelling, and language comprehension. ADHD impacts focus, organisation, and impulse control. The dyslexia ADHD genetic overlap appears strongest in brain networks responsible for working memory and information processing, suggesting that the same genetic variants may influence both sets of symptoms. 

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How Shared Genes May Influence Both Conditions 

The shared genes ADHD dyslexia link may work through subtle changes in how brain cells communicate. These changes can affect phonological processing in dyslexia and attention control in ADHD. Such overlapping effects are a key reason why dyslexia ADHD shared genetics research has become a growing focus in neuroscience. 

Possible Genetic Factors and Their Impact 

While research is ongoing, some recurring genetic findings stand out: 

Genes affecting dopamine regulation  

Variants in dopamine-related genes may influence both attention and learning processes. 

Genes linked to language development 

Certain gene differences may disrupt phonological awareness and reading acquisition. 

Polygenic risk 

Small effects from multiple genes may combine to increase the likelihood of both conditions. 

Visit providers like ADHD Certify for personal consultations that take both learning and attention profiles into account. 

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to Learning disabilities (e.g., dyslexia).

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Dr. Rebecca Fernandez, MBBS
Author

Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the author's privacy. 

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