Straight, plain-language answers to the questions people actually ask — about diagnosis, overlap with CPTSD, masking, and how to use our free self-assessment tool. If you haven’t read it yet, our ADHD vs. Autism vs. AuDHD basics guide is the best starting point; this page goes deeper into the specific questions that come up once you’ve got the basics down.
This page is educational and does not diagnose any condition. It isn’t medical, legal, or counselling advice.
Diagnosis and overlap
Can you have ADHD and autism at the same time?
Yes. Prior to 2013, the DSM technically prohibited a dual diagnosis, but that restriction was removed, and current diagnostic frameworks (DSM-5 and ICD-11) both recognize that ADHD and autism commonly co-occur. Research estimates vary, but co-occurrence in one direction or the other is common enough that many clinicians now screen for both when either is suspected.
What is AuDHD, exactly?
AuDHD is community shorthand for having both ADHD and autism — it isn’t a formal diagnosis you’ll find written on a chart. Clinically, you’d still be diagnosed with ADHD and autism as two distinct conditions. The term exists because the combination produces a distinct lived experience: the two conditions interact and sometimes mask each other, rather than simply adding together.
Can adults be diagnosed with ADHD or autism for the first time later in life?
Yes, and it’s increasingly common. Diagnostic criteria were largely built around how these conditions present in young boys, so many people — especially those who masked well, performed academically, or had strong compensatory systems — weren’t flagged in childhood. A growing number of clinicians now specialize specifically in adult assessment.
Why do so many women and AFAB people get diagnosed so late?
A combination of factors: diagnostic criteria historically normed on boys, stronger social pressure to mask, internalized presentations (anxiety, perfectionism, people-pleasing) that get misread as personality rather than neurodivergence, and co-occurring conditions like anxiety or depression getting treated first — sometimes for years — before anyone asks what’s underneath them.
Can I have ADHD or autism without meeting every single criterion?
Diagnostic thresholds exist because they’re clinically useful, not because every real experience fits neatly under them. Partial patterns are still worth discussing with a provider, especially if they’re affecting your daily life — a threshold is a guide for clinicians, not a gate you have to pass before your experience counts.
Is self-diagnosis valid?
Self-identification can be a meaningful and valid part of understanding yourself, and for many people it’s the necessary first step toward seeking formal support — but it isn’t the same thing as a clinical diagnosis, and it can’t provide access to medication, formal accommodations, or certain kinds of care that require a diagnosis on record. Where possible, we’d encourage using self-identification as the bridge to a formal assessment, not a replacement for one.
CPTSD, trauma, and how it relates
Does CPTSD look like ADHD or autism?
It can, which is exactly why misdiagnosis happens in both directions. Complex PTSD can produce difficulty concentrating, emotional dysregulation, and relationship struggles that resemble ADHD or autism on the surface. The distinguishing thread is usually origin and pattern: CPTSD symptoms are rooted in a history of prolonged relational or developmental trauma, while ADHD and autism are neurodevelopmental differences present from early life, independent of trauma history. See our CPTSD guide for the full breakdown of CPTSD’s specific symptom clusters.
Can I have CPTSD and ADHD or autism at the same time?
Yes, and it’s common — having one doesn’t rule out the other, and they can compound each other’s impact. This is part of why our self-assessment tool lets you explore more than one at once rather than forcing you to choose a single lane before you start.
If I have significant childhood trauma, does that mean my symptoms are “really” CPTSD instead of ADHD or autism?
Not necessarily, and it’s not usually a productive question to try to answer alone. Trauma can shape how neurodivergent traits show up (and undiagnosed neurodivergence can also make certain experiences more traumatic), but the two aren’t mutually exclusive explanations competing for the same symptoms. A clinician assessing for both is better positioned to untangle this than a self-assessment ever will be — our tool is built to surface the pattern, not resolve which one is “true.”
Masking
Does masking mean I don’t “really” have ADHD or autism?
No. Masking means you’ve built effective — often exhausting — strategies to manage or hide a real underlying difficulty. It doesn’t erase the difficulty; it just makes it harder for a standard checklist (or another person) to see. This is exactly why our self-assessment asks a follow-up question whenever you say something isn’t a struggle: to check whether that’s because it genuinely isn’t, or because you’ve built a personal system doing the work.
Why does masking make diagnosis harder?
Most standard screening tools ask whether something is a struggle right now, in the present tense. If you’ve spent years building routines, scripts, or workarounds, the honest answer to “do you struggle with X” can be “no” — even though the underlying pattern is very much still there. Masking can also cause real burnout over time, sometimes described as autistic or ADHD “burnout,” which is its own reason to take it seriously rather than treat it as evidence nothing’s going on.
Is masking the same thing as being “high-functioning”?
Not really, and we’d gently push back on the term “high-functioning” itself — it usually describes how well someone appears to be coping from the outside, not how much effort or cost that coping requires. Someone who masks well at work may be quietly exhausted, burnt out, or struggling significantly in ways that aren’t visible to colleagues or even close friends.
Using our self-assessment tool
Is this self-assessment a diagnosis?
No. It’s a self-driven, educational reflection tool designed to help you organize your own experience into language a clinician will recognize. Only a licensed healthcare provider can diagnose ADHD, autism, or CPTSD. Nothing on this site is medical advice, legal advice, or counselling.
Why do the questions ask “have you ever struggled,” instead of “do you currently struggle”?
Because most standard questionnaires are written for people without strong coping systems, and quietly miss anyone who’s built one. Asking whether something has ever been a prolonged struggle — and then asking whether a “no” is actually a personal system doing the work — catches patterns that a present-tense-only question would miss entirely.
What happens to my answers? Is this private?
Your responses stay in your own browser (using local storage) for as long as you’re using the tool, so you can pause and resume. Nothing is sent to or stored on our servers, and we don’t see your individual answers. Clearing your browser data or using a different device will start you fresh.
Can I save my progress and come back later?
Yes — the tool will offer to resume where you left off the next time you open it on the same browser and device.
What should I do with my results?
Print either the full transcript (every question and answer) or just the summary, and bring it to a conversation with a healthcare provider. The results page also includes a short script you can use to open that conversation, since starting it is often the hardest part.
Getting a formal assessment
What does a formal ADHD or autism assessment actually involve?
It varies by provider and country, but typically includes a structured clinical interview, standardized questionnaires (often more detailed than a self-assessment like ours), and sometimes input from someone who’s known you a long time or knew you in childhood. We’re building a dedicated page walking through cost, typical wait times, and what to look for in a provider by country — check back soon, or use the self-assessment results as your starting point for that conversation now.
What if my doctor dismisses my concerns?
This happens more often than it should, especially for adults, women, and AFAB people seeking a first diagnosis later in life. It’s not a sign you were wrong to ask. We’re building a dedicated page with scripts for exactly this situation — in the meantime, seeking a second opinion from a provider who specifically assesses adult ADHD or autism is a reasonable and common next step.
Didn’t find your question here? Start with our ADHD vs. Autism vs. AuDHD basics guide, or take the free self-assessment to help put words to what you’re noticing.