Why You Are Not Difficult: Understanding Pathological Demand Avoidance in Adults

You have been called difficult. Stubborn. Inconsistent. Too resistant. The person who is great one day and completely non-functional the next, with no obvious explanation. If that description has followed you across workplaces, relationships, and therapy offices, this article is for you.

We are going to talk about pathological demand avoidance, or as many of us in the neurodivergent community now prefer, the Pervasive Drive for Autonomy. We are going to look at what the research actually says, what it looks like in real life especially for late-diagnosed women, how it connects to burnout in a way that is distinct and under-discussed, and what actually helps. Everything here is grounded in peer-reviewed research and lived experience. References are provided in APA format at the end.

What Is Pathological Demand Avoidance?

Pathological demand avoidance (PDA) is an anxiety-driven behavioural profile characterised by an extreme, pervasive resistance to everyday demands, including things the person genuinely wants to do. It is not defiance, laziness, or a personality disorder. It is a nervous system that perceives demands, whether spoken, implied, self-generated, or internal, as threats, and responds accordingly.

Where did the term PDA come from?

PDA was first identified in 1983 by developmental psychologist Elizabeth Newson at the University of Nottingham. She described a group of children within the autism spectrum who showed an obsessive resistance to ordinary demands of daily life, driven clearly by anxiety rather than oppositional behaviour (Newson, 2003).

The PDA Society in the United Kingdom, the leading organisation for PDA advocacy and education, defines it as: determined avoidance of ordinary demands and expectations, including those the person genuinely wants to fulfil (PDA Society, 2024). It is not about the task. It is not about difficulty or laziness. It is about a nervous system running a constant threat assessment in which demands, spoken, implied, internal, or external, register as unsafe.

What does ‘Pervasive Drive for Autonomy’ mean?

Many neurodivergent people and advocates now prefer the alternative framing of Pervasive Drive for Autonomy. The shift in language matters. It moves the frame from pathology, what is wrong with this person, to nervous system need: this person requires genuine autonomy and control in order to feel safe and functional. The behaviour is the same. The understanding of it changes everything, including how support is delivered.

Is PDA only part of autism?

This is where the research gets particularly interesting for AuDHD adults. A peer-reviewed study published in 2020 by Egan and colleagues examined which conditions actually predicted PDA traits in community adult populations. Their finding was significant: ADHD was a far stronger predictor of PDA traits than autism. The correlation between ADHD and PDA was 0.71, which is a very strong statistical association. The correlation between autism alone and PDA was small and did not significantly predict PDA traits (Egan et al., 2020).

Some researchers have since suggested that PDA may be an expression of AuDHD itself, the combined autistic and ADHD neurotype, rather than a profile belonging exclusively to autism. If you have been reading about PDA and wondering whether it applies to you because you are not sure you are autistic enough, this study matters for you.

Is PDA an official diagnosis?

No. PDA does not appear in the DSM-5 or the ICD-11 and has no official standalone diagnostic criteria. A 2023 peer-reviewed paper concluded that PDA is not a standalone diagnostic entity but rather a behavioural profile that presents across different neurodivergent conditions (Woods, 2023). That does not make lived experience less real. It means the research is catching up to what people have been describing for decades. Many psychologists and psychiatrists will now include PDA as a profile within an autism assessment, and terminology varies considerably by region and practitioner.

What Does a PDA Profile Actually Look Like?

The textbook picture of PDA is the child who refuses everything loudly: I am not putting on my shoes, you cannot make me. Who argues, escalates, and melts down when pushed. That is one presentation. It is not the most common one in late-diagnosed adults, and it is almost never the face PDA wears in women.

What are the core characteristics of a PDA profile?

The PDA Society (2024) outlines six core characteristics. Here they are, translated from clinical language into real life:

• Avoidance of everyday demands, including things you enjoy and actively choose. Your brain resists them once they feel like an expectation, not because the task itself is the problem.
• An overwhelming need to be in control or to avoid being controlled. This is not about power over others. It is about safety. When your nervous system equates a loss of control with a threat, control becomes a survival mechanism.
• Use of social strategies to avoid demands. PDA profiles are often socially surface-fluent. Humour, distraction, flattery, changing the subject, charm: these are not manipulation. They are sophisticated, often unconscious avoidance mechanisms that have kept the person functioning in a world that does not accommodate their nervous system.
• Intense emotions and rapid mood shifts. The nervous system flips quickly. This is what gets women in particular labelled as volatile, dramatic, unstable, or too much.
• A strong sense of social justice and resistance to hierarchy. Many PDA adults describe feeling that hierarchies make no functional sense to them. This is not arrogance. It is a nervous system for which authority structures feel fundamentally unsafe rather than neutral.
• Comfort in roleplay, fantasy, and creative framing. Using imaginative or fictional frameworks to engage with the world is both a genuine joy and a coping strategy for many PDA people.

What people on the outside tend to see, particularly in women, is something quite different from this list. They see stubbornness, inconsistency, someone who is delightful in social settings and apparently falls apart at home. Someone who refuses reasonable requests. Someone who is capable one day and completely non-functional the next. Someone who is, to use the phrase heard repeatedly across workplaces and therapy rooms, just difficult.

What is happening is a nervous system running a constant threat assessment. Every demand, spoken, implied, internal, external, is being evaluated: Is this safe? Do I have a choice? Am I in control? When the answer is no, the stress response fires.

Psychology Today describes it as a tendency for neurodivergent individuals to experience a mind storm when overwhelmed by demands: a state that looks like defiance from the outside but feels like a physiological emergency from the inside (Morgan Blair, 2025). A mind storm is not a character flaw. It is not a choice. It is a dysregulated nervous system doing what dysregulated nervous systems do.

What Is Internalised PDA and Why Does It Affect Women Most?

Internalised PDA is the most common presentation in late-diagnosed women and AuDHD adults who have spent years, often decades, learning to appear fine. It does not look like the loud refusals in the clinical literature. It looks like compliance. And that is precisely why it goes undetected for so long.

What does internalised PDA look like?

PDA North America describes internalised PDA as hiding behind compliance, high masking, fawning, perfectionism, and withdrawal (PDA North America, 2024). The person appears polite, eager to please, cooperative. They comply on the outside while feeling completely trapped on the inside, often without even being consciously aware they are feeling trapped. The internal pressure accumulates silently, building into anxiety, depression, and burnout.

This is not a mild inconvenience. A 2024 peer-reviewed phenomenological study by Kenny and Doyle, published in the journal Autism in Adulthood, explored the lived experiences of adults with PDA profiles. The findings for women were striking:

• Significant and serious impacts of demand avoidance on daily life were described specifically by female participants aged 30 to 50.
• Participants described long histories of masking across adulthood, feeling persistently misunderstood, out of place, and fraudulent.
• One participant described herself as the wrong kind of victim: highly capable and functional in appearance, while simultaneously carrying significant unmet support needs that the system could not see because she did not match the expected picture of someone who was struggling (Kenny & Doyle, 2024).

That phrase, the wrong kind of victim, is one that resonates with extraordinary precision for many high-masking women who have been told they are too smart to be having these problems, or that they do not look autistic, or that they seem fine.

Why is internalised PDA so often missed in women?

The existing PDA research base is built almost entirely on studies of children, with data collected primarily through caregiver reports. The lived experience of adults, and particularly women, is almost absent from the literature. As the Medical News Today review notes, there is limited representation of adults in the PDA literature, making it difficult to determine how demand avoidance behaviours present in adulthood (Medical News Today, 2026).

Autistic women and girls are already at high risk of having their presentations missed, misdiagnosed, and misunderstood. Add a PDA profile on top of that, particularly an internalised one, and you have a person who looks completely fine on the outside while completely falling apart on the inside. The gap between what is visible and what is actually happening is often enormous, exhausting, and deeply isolating.

How Is PDA Commonly Misdiagnosed?

The misdiagnosis rate for PDA is high, and the consequences are serious. When the underlying profile is not recognised, treatments and support systems are built for the wrong condition, and they actively cause harm.

What conditions is PDA most commonly mistaken for?

PDA is most frequently misdiagnosed as:

• Oppositional defiant disorder (ODD)
• Generalised anxiety disorder or social anxiety disorder
• Borderline personality disorder (BPD)
• Complex PTSD or trauma responses
• A difficult personality or character flaw

What is the difference between PDA and ODD?

The critical distinction is motivation. Oppositional defiant disorder is driven by anger and the desire for power. PDA is driven by anxiety and the need for safety. These are fundamentally different nervous system experiences, and they do not respond to the same interventions. Treating a PDA profile with the compliance-based, reward-and-consequence systems designed for ODD does not produce cooperation. It produces escalation, deeper shutdown, and long-term harm to the person’s sense of self and relationship with authority (O’Nions & Eaton, 2020).

Baker Center for Children and Families describes it this way: for a child or adult with ODD, the driver of non-compliance is defiance, deliberate and power-oriented. For a person with a PDA profile, the driver is anxiety-based avoidance, and the surface social skills they use to navigate demands can make it appear manipulative to an outside observer who does not understand the underlying nervous system need (Baker Center, 2023).

Why does misdiagnosis of PDA matter?

When PDA is misdiagnosed, the person receives interventions designed for anger-based or character-based presentations. They are put into behavioural management systems, reward charts, and consequence frameworks. Every one of those approaches sends the PDA nervous system deeper into threat mode. Psychology Today documents clearly that PDA does not respond well to rewards and punishment. What works is collaboration, humour, flexibility, and reduction of perceived threat (Morgan Blair, 2025).

If you have tried every productivity system, every reward structure, every accountability framework, and wondered why you are the only person for whom it never works, this is not a personal failure. The system was not built for your particular nervous system.

What Is PDA Burnout and How Is It Different from Autistic Burnout?

PDA burnout is real, it is distinct, and it is almost entirely absent from mainstream clinical conversations. Understanding the difference between PDA burnout and autistic burnout is not academic. It changes how you recover, and whether recovery is even possible with the strategies you are currently using.

What causes autistic burnout?

Autistic burnout is typically caused by the prolonged effects of masking, navigating sensory overwhelm, and suppressing your natural way of being in the world across extended periods. The recovery involves unmasking, reducing sensory load, and having access to genuine downtime and acceptance.

What causes PDA burnout?

PDA burnout has a different mechanism. It is caused by too many demands accumulating without sufficient recovery time between them. The nervous system runs a continuous threat assessment against every demand it encounters. When the cumulative load exceeds capacity, it crashes. The person does not gradually slow down. They hit a wall.

Here is the part that is particularly important and particularly painful: in PDA burnout, even enjoyable activities begin to feel like demands. Something you love, something you choose, something that used to be a refuge, your nervous system suddenly flags as pressure and you cannot access it. This is not laziness. This is not depression, although it can present identically. It is a nervous system communicating with complete clarity: I have nothing left. I cannot take on anything else right now. Not even the good things.

How do you recognise PDA burnout?

Signs that distinguish PDA burnout from other forms of collapse include:

• Previously enjoyable hobbies or activities now feel like demands and are inaccessible.
• The expectation to seek help, or even to engage in recovery activities, feels like another demand and makes access harder.
• The burnout lifts temporarily when all external demands are genuinely removed, not just reduced.
• Reward-based or accountability-based recovery strategies make the burnout worse rather than better.
• Sensory overwhelm may be present but is secondary to demand overwhelm as the primary driver.

Neuro Clarity Counseling describes it precisely: in PDA burnout, even engaging with the idea of seeking help can feel like a demand, making the path to recovery paradoxically inaccessible (Neuro Clarity Counseling, 2024). This is not a mindset problem. This is nervous system logic working exactly as designed for someone whose system has been pushed past its threshold.

What Does the Research Say About PDA in Adult Women?

The honest answer is: not nearly enough. The PDA research base is thin, particularly for adults, and the representation of women specifically is almost non-existent. Most studies have been conducted on children and rely primarily on caregiver reports, not self-report or lived experience methodologies.

What peer-reviewed research exists on PDA in adults?

The most significant recent research specific to adult experience includes:

1. Egan et al. (2020), published in PubMed, which established the strong correlation between ADHD and PDA traits in adult community populations (correlation 0.71), challenging the assumption that PDA is exclusively an autistic profile.
2. Kenny and Doyle (2024), a phenomenological study published in the journal Autism in Adulthood, which documented the lived experiences of adults with PDA, with particular attention to female participants aged 30 to 50 and the significant impact of internalised demand avoidance on daily functioning.
3. A 2023 peer-reviewed paper concluding that PDA is not a standalone diagnostic entity but a behavioural profile that presents across neurodivergent conditions, emphasising the need for profile-based rather than diagnosis-based understanding (Woods, 2023).

The Kenny and Doyle study is particularly important for this community. It used phenomenological methodology, meaning it centred the first-person accounts of people with PDA rather than observer reports. It found that having language for the experience, being able to say I am not defiant, I have a nervous system that responds to demands as threats, was one of the most significant turning points participants described. Language gives people access to self-understanding, advocacy, and the ability to ask for what they actually need (Kenny & Doyle, 2024).

Where are the gaps in PDA research?

The gaps are significant and worth naming clearly:

• No reliable diagnostic instrument exists for identifying PDA in adults.
• Almost all existing research was conducted on children, with adult data largely absent.
• Female presentations, particularly internalised PDA, are severely underrepresented.
• There are no standardised treatment protocols for PDA in adults.
• Regional variation in clinical recognition is substantial: PDA is far more recognised in the United Kingdom than in North America, Australasia, or continental Europe.

This does not mean that lived experience is invalid. It means that the research is behind the lived experience, not ahead of it. The people describing these experiences are not imagining things. The literature simply has not caught up yet.

What Actually Helps? Evidence-Based and Lived-Experience Strategies for PDA Adults

There is no standardised treatment protocol for PDA in adults. No single medication is approved for it. No one-size-fits-all programme exists. What does exist is a growing body of evidence from lived experience, clinical observation, and emerging research that points clearly toward certain approaches and just as clearly away from others.

1. Name it first

Kenny and Doyle (2024) found that having language for the experience was one of the most significant turning points adults with PDA described. When you can say I am not difficult. I am not defiant. I have a nervous system that responds to demands as threats, the internal narrative changes. What you ask for changes. How you explain yourself to others changes. The self-blame that has accumulated over decades starts to have somewhere else to go.

2. Reduce unnecessary demands

This sounds obvious. It is genuinely difficult for high-masking women who have spent their entire lives adding demands to their load rather than removing them. But every demand your nervous system does not have to process is recovery capacity. A useful exercise is to audit your daily and weekly demand load and ask honestly: what on this list is not actually necessary? What has been maintained by obligation, habit, or fear rather than genuine need?

3. Build real low-demand time

Not scrolling. Not passive consumption. Real rest: time in which nothing is expected, including the expectation to rest in a particular way. For PDA adults, rest that comes with an agenda, even a wellbeing agenda, still registers as a demand. The goal is time in which the nervous system genuinely has no performance requirement.

4. Prioritise genuine autonomy

PDA North America is clear on this point: when safety and autonomy come first, connection follows. So does learning, growth, and genuine cooperation (PDA North America, 2024). This means real choice, not offered choices that are still directed toward a predetermined outcome. It means designing work arrangements, relationships, and daily structures that give the nervous system authentic agency rather than controlled options within a fixed framework.

5. Understand why conventional behaviour systems backfire

Rewards and punishments, productivity frameworks, accountability partners, consequence-based systems: these approaches amplify threat perception for a PDA nervous system. They do not produce the cooperation they were designed for. They produce escalation, shutdown, and deeper avoidance. Psychology Today documents this directly: what works for PDA is collaboration, humour, flexibility, and reduction of perceived threat (Morgan Blair, 2025). Approaches that reduce pressure, increase choice, and build safety are the ones that work.

6. Seek neurodivergent-affirming support

Psychotherapy approaches that attempt to modify the behaviour without understanding the underlying nervous system mechanism can cause harm. The goal is not to eliminate demand avoidance. It is to understand the nervous system, reduce unnecessary demand load, build genuine recovery capacity, and develop self-advocacy skills that work with the PDA profile rather than against it. NeuroSpark Health describes this as trauma-informed, autonomy-centred support that honours the PDA profile as a nervous system reality rather than a behaviour management problem (NeuroSpark Health, 2025).

Frequently Asked Questions About Pathological Demand Avoidance

Can adults be diagnosed with PDA?

PDA can be identified in adults, though formal diagnosis pathways vary significantly by country and practitioner. In the UK, PDA is increasingly documented within autism assessments. In North America and Australasia, recognition is growing but inconsistent. There is no validated diagnostic tool specific to PDA in adults. Most identifications occur through comprehensive autism or AuDHD assessments with a clinician familiar with PDA profiles.

Is PDA the same as demand avoidance in ADHD?

No, though there is significant overlap. Demand avoidance is common across ADHD and autism for various reasons including executive functioning difficulties, task initiation challenges, and sensory issues. PDA-specific demand avoidance is distinguished by its primary driver: autonomy threat. In PDA, the avoidance is specifically triggered by the perception of a demand as a threat to autonomy, even when no other factors such as difficulty or sensory load are present. Neurodivergent Insights provides a detailed breakdown of this distinction (Neff, n.d.).

Can children with PDA profiles grow out of it?

Research suggests that PDA traits persist into adulthood. The strategies used to avoid demands become more sophisticated with age, but the underlying nervous system response remains (Johnson & Saunderson, 2023; Kenny & Doyle, 2024). Adults do not grow out of PDA. They typically become better at hiding it, which is the very mechanism that makes internalised PDA so damaging over time.

What should I do if I think I have a PDA profile?

4. Start with reputable resources: PDA Society (UK), PDA North America, and Neurodivergent Insights are the three most evidence-grounded sources currently available.
5. If seeking assessment, look for a clinician experienced with AuDHD or autism in adults who explicitly lists PDA familiarity in their practice.
6. Use the language. You do not need a formal diagnosis to begin understanding and accommodating your nervous system needs.
7. Connect with community. The lived experience community for PDA adults is active and informed, particularly online.

You Were Never Difficult. You Were Under-Resourced.

The pathological demand avoidance profile has been described in the clinical literature since 1983. The adult experience, the internalised presentation, the particular way it shows up in late-diagnosed women, the specific mechanics of PDA burnout: these remain largely undocumented in formal research. But they are not undocumented in lived experience. They show up every time someone hears the phrase the wrong kind of victim and recognises themselves. Every time someone discovers that the reason reward charts have never worked for them is not a personal failure but a nervous system mismatch. Every time a woman in her thirties or forties receives a piece of language that, for the first time, makes sense of five decades of being told she is too much.

You were not difficult. You had a nervous system navigating a world built entirely around demands, with no map, no language, and no accommodation. Now there is a map. It is early, it is incomplete, and the research still has a great deal of catching up to do. But it exists. And it is yours.

If this article helped you understand yourself or someone you care about, the YouTube video companion to this piece is available at @nikiknobel. The audiobook Unmasking Leadership goes deeper into what it means to lead, work, and live as an unmasked neurodivergent woman without burning out.

CONTENT CLUSTER!

This article is part of a content cluster on neurodivergent lived experience. Related topics for interlinked reading:

• Rejection Sensitive Dysphoria (RSD): Why Rejection Feels Like the End of the World
• Autistic Burnout vs ADHD Burnout: What Is the Difference for AuDHD Brains?
• Masking: The Hidden Cost of Appearing Fine

References

Attwood, T., Evans, B., & Lesko, A. (2014). Been there. Done that. Try this! An Aspie’s guide to life on Earth. Jessica Kingsley Publishers.

Baker Center for Children and Families. (2023). What is pathological demand avoidance (PDA)? https://www.bakercenter.org/PDA

Egan, V., Bull, E., Trundle, G., & Hare, D. (2020). Measurement of adult pathological demand avoidance traits and its association with autism and ADHD symptomatology. PubMed Central. https://pubmed.ncbi.nlm.nih.gov/32682221/

Kenny, C., & Doyle, N. (2024). Lived experiences of adults with pathological demand avoidance profiles. Autism in Adulthood, 6(2). https://doi.org/10.1177/27546330241277075

Medical News Today. (2026, January 9). Pathological demand avoidance: Signs and support. https://www.medicalnewstoday.com/articles/pathological-demand-avoidance

Morgan Blair, M.A., LPCC. (2025, April 8). What is pathological demand avoidance? Psychology Today. https://www.psychologytoday.com

Neff, M. (n.d.). The difference between PDA and demand avoidance. Neurodivergent Insights. https://neurodivergentinsights.com/pda-or-demand-avoidance/

Neuro Clarity Counseling. (2024). PDA burnout vs autistic burnout. https://www.neuroclaritycounseling.com

NeuroSpark Health. (2025). Understanding pathological demand avoidance in adults. https://neurosparkhealth.com/pda/pathological-demand-avoidance-pda

Newson, E., Le Marechal, K., & David, C. (2003). Pathological demand avoidance syndrome: A necessary distinction within the pervasive developmental disorders. Archives of Disease in Childhood, 88(7), 595-600. https://doi.org/10.1136/adc.88.7.595

O’Nions, E., & Eaton, J. (2020). Extreme/’pathological’ demand avoidance: A discussion of the evidence base. Paediatrics and Child Health, 30(10), 382-386.

PDA North America. (2024). Defining and supporting PDA. https://pdanorthamerica.org

PDA Society. (2024). What is PDA? https://www.pdasociety.org.uk

Woods, R. (2023). Pathological demand avoidance: Is it a distinct behavioural profile? Journal of Child Psychology and Psychiatry, 64(3). https://doi.org/10.1111/jcpp.13691