What is AuDHD?
AuDHD is a term widely used in the neurodivergent community to describe the experience of being both autistic and ADHD. It’s not a clinical diagnosis in itself — but it’s a powerful way of naming something that many people have lived with for years without ever having the right language for it.
Research now suggests that autism and ADHD co-occur far more often than was previously understood. Many autistic people also have ADHD, and many people with ADHD are also autistic. Yet the two are still frequently assessed and treated in isolation — and for a significant number of people, one or both are missed entirely.
Why AuDHD is so often missed
Autism and ADHD can interact in ways that make both harder to identify — especially in women, girls, and those who have learned to mask or camouflage their differences.
- Masking makes both less visible. Many autistic and AuDHD people — particularly women and girls — become highly skilled at hiding their differences. By the time they reach an assessment, the presentation can look confusing or inconsistent, because so much is being suppressed.
- The conditions can cancel each other out on paper. Autistic traits like rigidity and need for routine can appear to offset ADHD traits like impulsivity and disorganisation — and vice versa. Clinicians who aren’t experienced with co-occurring presentations can miss the picture entirely.
- ADHD in women looks different. The hyperactive, disruptive presentations that shaped how ADHD was originally understood are less common in women and girls. Inattentive presentations — distractibility, overwhelm, difficulty sustaining focus — are frequently dismissed as anxiety, low mood, or personality.
- Late diagnosis is the norm, not the exception. Many AuDHD adults we see were diagnosed with anxiety or depression in their twenties and thirties. Some were told they were “too articulate” or “too high-functioning” to be autistic. Others were never referred at all.
What the AuDHD experience can feel like
People who come to us often describe feeling like they’ve been living with a set of contradictions that no one could explain. Some of what we commonly hear:
- Craving routine and structure, but struggling to initiate or sustain it
- Being deeply passionate and focused on certain things, while finding everyday tasks nearly impossible
- Feeling exhausted by social situations, but also restless and understimulated in quiet environments
- Having a strong internal sense of how things “should” be, alongside an inability to organise or prioritise effectively
- Being told you’re intelligent and capable, but feeling like you’re constantly failing at basic things
- Burning out repeatedly, without understanding why
If any of this sounds familiar, you’re not alone — and you’re not broken. An AuDHD profile is a genuine neurological difference, and understanding it can be genuinely life-changing.
Our approach to AuDHD assessment
At South London Psychology Partnership, we have been working with autistic people and those with complex neurodevelopmental profiles since 2012. We understand that AuDHD presentations require clinical experience that goes beyond assessing each condition separately.
- We use gold-standard tools. Our autism assessments use the DISCO (Diagnostic Interview for Social and Communication Disorders), developed at the Lorna Wing Centre — one of the most comprehensive and respected autism assessment tools available. For ADHD, we use the DIVA-5, based on DSM-5 criteria. Where both are indicated, we offer a combined AuDHD assessment.
- We specialise in women, girls, and those who mask. Our founders, Dr Caroline Gratton and Dr Kate Davis, have spent their careers working with autistic women and girls, and with people whose presentations have been missed or misunderstood elsewhere. We know what masking looks like, and we know how to create conditions in which people feel safe enough to be themselves.
- We look at the whole person. A diagnosis is a starting point, not an endpoint. Our assessments go beyond a label — we work to understand how your neurodevelopmental profile has shaped your life, your mental health, your relationships, and your sense of self. Our reports are detailed, personalised, and written in draft first so you can contribute to them.
- We offer support beyond assessment. For many AuDHD people, diagnosis is followed by a significant period of processing and adjustment. We offer therapy, mentoring, and ongoing support for those who want it — including for those navigating autistic burnout, anxiety, trauma, and the particular challenges of being AuDHD in a world not designed for you.
Who we work with
We offer AuDHD assessments for adults and young people from age 12 upwards. We particularly welcome:
- Adults who have received a partial diagnosis and suspect the full picture hasn’t been identified
- Women and girls who have been told their difficulties are anxiety, depression, or personality-related
- People who have previously been assessed elsewhere and felt unseen or misunderstood
- Those who self-identify as AuDHD and are seeking formal assessment for the first time
We are registered with a number of the UK’s leading insurance companies and can provide documentation to support insurance claims where applicable.
Is AuDHD a real diagnosis?
AuDHD isn’t a formal clinical term — you won’t find it in the DSM-5 or ICD-11. What it describes, however, is very real: the co-occurrence of autism and ADHD, which is clinically recognised and increasingly well-understood. Many people find the term AuDHD more accurately captures their lived experience than either diagnosis alone. At SLPP, we’re comfortable using the language that resonates with you.
Can I be assessed for both autism and ADHD at the same time?
Yes. We offer combined AuDHD assessments for adults. We also consider ADHD as part of our standard autism assessment screening process — so if ADHD appears relevant, we’ll discuss this with you and can incorporate it into your assessment or recommend it as a follow-on step.
I’ve already been diagnosed with autism — can I still be assessed for ADHD?
Absolutely. We see many people who have an existing autism diagnosis and are coming to us specifically because they suspect ADHD hasn’t been identified. We can offer a standalone ADHD assessment in this context.
I’ve already been diagnosed with ADHD — can I be assessed for autism?
Yes. This is one of the most common routes to an AuDHD diagnosis. ADHD is often identified first — particularly in childhood — while autism goes unrecognised. We can assess for autism where you have an existing ADHD diagnosis.
Why is it important to assess both together rather than separately?
Assessing autism and ADHD in isolation can lead to an incomplete picture. The two conditions interact — traits from one can amplify, suppress, or mimic traits from the other. A clinician experienced in co-occurring presentations is much better placed to understand what’s actually going on than one who is assessing only for one condition at a time.
Do you work with people who have already been assessed elsewhere and received a partial or unclear diagnosis?
Yes, and this is something we have considerable experience with. If you’ve had a previous assessment that felt incomplete, or a diagnosis that doesn’t quite fit, we’re happy to talk through what a re-assessment or complementary assessment might look like for you.
What age do you assess from?
We work with young people from age 12 and adults of all ages. We have particular expertise in adults who are seeking diagnosis later in life, including those in their forties, fifties, and beyond.
How long does an AuDHD assessment take?
A combined AuDHD assessment typically takes around six hours. This includes a developmental history with an informant (usually a parent or partner, where possible) as well as direct assessment with you. We also ask you to complete some screening questionnaires in advance.
Will my assessment report be accepted by my GP, employer, or other services?
Yes. Our reports are detailed and clinically robust, and are accepted by GPs, employers, universities, and local authorities. We are HCPC-registered psychologists and our assessments meet the standards required for formal diagnosis.
What happens after diagnosis?
We don’t see diagnosis as the end of the process. We offer post-diagnostic therapy and mentoring, and our reports include personalised recommendations to help you understand your profile and make meaningful changes. We’re also happy to liaise with other professionals involved in your care where this would be helpful.
