A recent study in the journal Molecular Psychiatry found that autism and ADHD can be linked by the same brain and gene patterns. Even though doctors give them different names, the two conditions often appear together.
Brain Connections Match Autism Traits
Scientists from the Child Mind Institute looked at brain scans of 166 children aged 6‑12. Some had autism, some had ADHD, and all could speak.
Kids with stronger autism symptoms showed tighter links between two important brain networks: the frontoparietal (FP) and the default‑mode (DM). These networks help with social thinking and planning.
Usually, as children grow, these links become weaker so the brain can specialize. In children with more severe autism traits, this weakening does not happen the same way, no matter whether they were diagnosed with autism or ADHD.
Genes Show Similar Overlap
The researchers also matched the brain patterns to maps of gene activity. Many of the genes involved are known to affect brain development and have been linked to both autism and ADHD.
This suggests that the same biological processes may shape symptoms in both conditions.
How the Study Was Done
The team combined two advanced methods: resting‑state functional MRI to see brain connections, and a computer technique called spatial transcriptomics to compare those connections with gene maps.
This mix lets scientists see how brain communication and genetics line up, opening the door to future “biomarkers” that could help doctors identify these conditions more precisely.
Key Takeaways
- More severe autism symptoms match similar brain‑network patterns in both autism and ADHD.
- The patterns line up with brain‑development genes.
- Shared symptoms across the two disorders may come from overlapping genetics.
- How brain networks mature could be a key factor in autism‑related traits.
- Both symptom‑based (dimensional) and diagnosis‑based (categorical) views help us understand these conditions.
- The findings could guide future searches for biomarkers and better care.
What This Means for Care
Focusing on specific symptoms and their brain basis may let doctors create more personal treatment plans, rather than relying only on broad diagnostic labels.
The study also supports a growing move in psychiatry toward data‑driven, dimensional models that cut across traditional diagnoses. Large projects like the Healthy Brain Network are gathering brain scans and behavior data to help make this shift possible.