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Autistic, ADHD, or Trauma? Why the Line Gets Blurred

Writer: Dr Rebecca Hannan
Dr Rebecca Hannan
Jul 1
2 min read

Updated: Sep 5

If you have come away from reading about this more confused than when you started, you're not alone. "Is this trauma? Is this ADHD? Is this autism?" is one of the most common questions I hear from adults seeking answers about themselves. It's a genuinely hard question, because the three can look remarkably similar on the surface.

Why the overlap happens

Trauma responses and neurodivergent traits aren't separate categories that sit neatly apart from each other. They can produce very similar presentations:

  • Hypervigilance can look like inattention. A nervous system scanning for threat isn't a nervous system that's easily focused on a task.

  • Dissociation can look like the "zoning out" often flagged as ADHD inattentiveness.

  • Emotional dysregulation shows up in both complex trauma and ADHD, for different underlying reasons.

  • Masking and burnout, common in late-diagnosed autism and ADHD, can present almost identically to chronic anxiety or CPTSD.

None of this is coincidence. Diagnostic criteria were built around observable behaviour, not underlying cause, so two people can meet the same checklist for very different reasons.

Why getting this right matters

This isn't just an academic distinction. It shapes:

  • What kind of support actually helps. Trauma-focused work and neurodivergence-affirming support aren't interchangeable, even though they can complement each other.

  • How you understand yourself. When anxiety is the label that fits the surface presentation and something else is driving it underneath, it is possible to spend a long time working on the wrong thing. The overlap is what makes that genuinely difficult to see.

  • Whether a diagnosis is even the right next step, or whether therapeutic work should come first.

It's often not either/or

For many adults I work with, it isn't a case of choosing one explanation. Trauma and neurodivergence frequently coexist. A late-diagnosed autistic or ADHD adult has often also accumulated genuine trauma from years of being misunderstood, masking, or not knowing why things felt harder than they should. Untangling the two isn't about picking a label; it's about understanding the fuller picture of what's actually happening for you.

A trauma-differential, non-pathologising approach

In practice, this means listening for the difference between a nervous system responding to genuine threat, and a nervous system that's simply wired differently from the start. It means paying attention to your body's responses, not only checklist symptoms. And it means treating neurodivergence as a difference to understand and work with, not a disorder to fix.

If this has been on your mind, you're not alone, and you don't have to work it out by yourself.

Working out which of these is doing what is the centre of how I assess, and it is why the assessment includes trauma measures alongside the neurodevelopmental ones. The assessment page sets out the pathways, what each involves and what it costs.

If this resonates, you're welcome to get in touch, or read more about how I work.

Contact Rebecca

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© 2026 Rebecca Hannan. All Rights Reserved. 'IntraConnect' is the trading name for the Partnership of Gener Lapina and Rebecca Hannan ABN 48774654541.

 

More information on the counselling services Gener offers via his website
www.generlapina.com

We (Gener and Rebecca) acknowledge Aboriginal and Torres Strait Islander peoples as the First Australians and Traditional Custodians of the land that we live, learn and work on. We are on the traditional lands of the Awabakal and we give our enduring respect to this land and its Elders past, present and emerging.

 

Photos of Rebecca by Hayley Melrose.
 

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Psychology services are provided by Rebecca Hannan, AHPRA-registered psychologist (Registration No. PSY0002616374).

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