Pathological Demand Avoidance (PDA): DSM-5 Status, Signs, Sensory Links, and What the Research Says

What is pathological demand avoidance?

Pathological demand avoidance (PDA) is a proposed profile, most often described within autism, in which everyday demands meet persistent and marked resistance. The UK’s National Autistic Society treats that resistance as a characteristic of some autistic people and counts many kinds of demand: direct instructions, internal demands such as hunger or needing the toilet, and implied ones such as a question that needs an answer.⁠¹

What sets the profile apart, in its supporters’ account, is that the avoidance reaches things a person wants or enjoys. The PDA Society, a UK charity, describes a determined avoidance of everyday demands, including things the person enjoys doing, alongside a sociable manner, social strategies used to avoid demands, and intense emotions and mood swings.⁠⁹ The National Autistic Society adds that a demand need not be unpleasant to cause distress.⁠¹

Where did the term pathological demand avoidance come from?

From the British psychologist Elizabeth Newson, who coined it in the 1980s for children who did not fit the picture of autism recognized at the time.⁠^1,8 In 2003 she and colleagues proposed recognizing pathological demand avoidance syndrome as a separate condition within the pervasive developmental disorders, instead of grouping these children under pervasive developmental disorder not otherwise specified.⁠¹¹ Drawing on 150 cases, the paper reported an equal sex ratio and avoidance through social strategies in every child, with a set of criteria based on a random sample of 50 children and a follow-up of 18 young adults.⁠¹¹

Newson also reported that these children did not respond to the structure and routine recommended for most autistic children, and did best with novelty, humor and flexibility, with demands buffered by one-to-one relationships or disguised through an indirect approach.⁠⁸ Indirect communication remains part of the advice families are given.⁠¹

Is PDA recognized outside the UK?

The idea grew in the UK, where it originated and where the National Autistic Society held annual conferences on it from 2011.⁠⁸ Research has since come from Ireland, where a national study surveyed 264 parents, 54 practitioners and 6 people with PDA; from the Faroe Islands; from Western Australia; and from the United States, where a parent program has been studied.⁠^2,13,15,16 A review in a German child psychiatry journal concluded that PDA is neither a diagnostic entity nor a subtype of autism but a behavior profile.⁠¹⁷ Requests for a PDA diagnosis have been rising.⁠^2,4

Why do some people object to the word pathological?

Because it can sound as if the child is the problem. Some professionals object that the word pathologizes the child, although it was meant to describe the extent and impact of the avoidance; the National Autistic Society notes that some people prefer Persistent Drive for Autonomy, while others find pathological apt because the experience is all-consuming.⁠^1,14

What are the signs and symptoms of PDA in a child?

The descriptions come from Newson’s work, parents’ reports and people with the profile. None is diagnostic on its own, and several are common in autism generally.⁠^6,8

1. Resisting everyday demands, including things the child wants to do or enjoys.⁠^1,9
2. Avoidance that grows with pressure. When children with the profile are pushed to comply, their behavior tends to become more oppositional and extreme.⁠²
3. Social strategies to avoid demands, such as distraction, changing the subject, excuses that may be fanciful, or withdrawing into fantasy.⁠^1,9
4. An intense need for control, often seen as domineering behavior toward other children and adults.⁠^1,8
5. Panic, meltdown or shutdown when a demand cannot be avoided, which the National Autistic Society describes as usually out of the person’s control.⁠¹
6. A sociable surface. A sociable manner can hide deeper social difficulties, which Newson called surface sociability.⁠^8,9
7. Rapid changes of mood and impulsivity.⁠^8,9
8. Comfort in role play and pretend, sometimes taking on a borrowed role, such as a teacher’s, with other children.⁠⁸

Which signs are specific to PDA, and which are common in autism?

Fewer are specific than Newson thought. Using a clinical interview, O’Nions and colleagues found that many proposed features, such as uncooperativeness, labile mood and blaming others, were common in autistic people generally, and the people with many PDA features were no more likely than the rest of the sample to show flexible pretend play.⁠^6,8 The features they judged most specific were apparently manipulative and socially shocking behavior.⁠⁶ When PDA was first described, socially sophisticated avoidance was thought to be rare in autism; the National Autistic Society notes that many autistic people are now understood to use such strategies.⁠¹

Is PDA in the DSM-5?

No. Pathological demand avoidance is not recognized in the DSM-5-TR or the ICD-11, so no one can receive a standalone diagnosis of PDA.⁠^1,2 It was not in the DSM-5 or the ICD-10 either.⁠⁸ The PDA Society also says that PDA is not a diagnosis.⁠⁹ Researchers studying a parent program put the reason plainly: there is not yet enough scientific evidence for either manual to recognize it.⁠¹⁵

The DSM-5 also removed autism subtypes such as Asperger’s syndrome, which some researchers see as a reason not to make demand avoidance a separate subdivision of autism.⁠⁶

What does the ICD-11 say about demand avoidance?

ICD-11 has no PDA code. Its autism entry does mention demand avoidant behavior, in the note separating autism from oppositional defiant disorder: oppositional or demand avoidant behavior may be prominent in some autistic children, with or without intellectual or language impairment, and may be the presenting feature in school-aged children.⁠¹⁰ The same note says that outbursts in autism often follow a trigger, such as a change in routine, aversive sensory input or anxiety, rather than an intent to be defiant.⁠¹⁰

What does a PDA profile on an autism report mean?

It means the assessor recorded demand avoidance as part of the person’s autism, not as a separate diagnosis. Some people receive an autism diagnosis with a demand avoidant or PDA profile noted, but the wording is not standardized, there is no standard assessment for PDA, and not all clinicians recognize it.⁠^1,9 The National Autistic Society’s position is that an autism assessment should record demand-avoidant characteristics or a strong need for autonomy, with or without the PDA label.⁠¹

How is PDA measured?

With questionnaires and interview items, none of them a diagnostic test. The Extreme Demand Avoidance Questionnaire (EDA-Q), published in 2014, asks parents to rate 26 statements; in its validation with 326 parents of children aged 5 to 17, it separated children reported to have PDA from comparison groups with a sensitivity of 0.80 and a specificity of 0.85.⁠^2,12 Its authors presented it as a tool for future research, and it remains a freely available research questionnaire.⁠^2,12 An adult self-report version followed in 2019, and an 11-item set drawn from a clinical autism interview brought the field a step closer to a clinician-rated measure.⁠^8,19

What are the criticisms of PDA research?

Two systematic reviews reach similar conclusions. Kildahl and colleagues reviewed 13 studies in 2021: all based their definition on Newson’s descriptions, without clear methods for developing those criteria; most relied only on parents’ reports; few weighed alternative explanations; and none asked people with PDA themselves.⁠⁴ A 2026 review of 12 studies rated every one at high risk of bias, found the two tools used inconsistently, and concluded that circular logic makes it hard to support the tools, let alone the condition.⁠⁵

Specificity is a further problem. Autistic children with behavior problems who had not been identified with PDA also scored relatively high on the EDA-Q, and in adults, self-rated demand avoidance tracked antagonism, emotional instability and ADHD traits more closely than autism.⁠^8,19,20

Why is pathological demand avoidance debated?

Because the behaviors are real but the category is unproven. A 2018 review in The Lancet Child and Adolescent Health concluded that the evidence does not support PDA as an independent syndrome, while agreeing that the term points to real co-occurring difficulties that affect families; it argued these are better understood through social, sensory and cognitive sensitivities in autism, co-occurring conditions and the child’s environment.⁠³ Using PDA as a diagnosis had, the authors wrote, at times altered referral practice and caused misunderstandings between professionals and families.⁠³

• Subtype or part of autism? Some see PDA as a distinct autism subtype; others note that autism criteria have broadened enough to cover many of its traits.⁠^3,6
• A category or an interaction? Anxiety and intolerance of uncertainty explain part of demand avoidance in children and adults.⁠^6,7
• Only in autism? Links to ADHD, oppositional defiant disorder and complex trauma have been suggested, and some people who identify as PDA do not consider themselves autistic.⁠^1,9
• Does the label shape what people see? Critics describe a looping effect, in which PDA training and conferences lead families to read behavior through the proposed traits; people with lived experience reply that critics lack that experience.⁠¹

Positions have shifted. The National Autistic Society, which ran PDA conferences for years, now says its past activity created a belief that it accepted the concept beyond the evidence, and that it has reviewed its content to match the evidence.⁠^1,8 Others defend the profile’s practical use: O’Nions and Eaton argue that describing PDA features as part of a clinical formulation can alert parents and teachers to particular challenges with everyday requests.⁠²¹ On one point there is broad agreement: more and better research is needed.⁠^1,22

Is PDA part of autism, or separate?

Researchers and the PDA Society mostly describe it as part of the autism spectrum, and in the clinical interview study, all but one person with many PDA features met autism criteria.⁠^6,8,9 Newson herself first conceived of PDA as separate from autism, within the wider group of pervasive developmental disorders.⁠⁸ In adult surveys, autistic traits and anxiety predicted demand avoidance about equally, but another adult study found ADHD traits correlated far more strongly with it (r = 0.71) than autism did.⁠^6,20

Is demand avoidance driven by anxiety?

Partly, on current evidence. In a survey of 214 families, intolerance of uncertainty predicted the main PDA behaviors, and anxiety explained part of the link to meltdowns; the authors suggest the avoidance can be an attempt to make life more certain and predictable.⁠⁷ In two adult surveys of 267 and 549 people, anxiety and autistic traits were equally strong predictors.⁠⁶ The National Autistic Society calls this research low quality and notes that some people with lived experience see anxiety as the effect, not the cause, of threats to their autonomy.⁠¹

Is PDA linked to sensory processing differences?

Possibly. The PDA Society notes that autistic people, including those with a PDA profile, are likely to have sensory differences, and the National Autistic Society lists sensory regulation and a workable sensory environment among the supports people find helpful.⁠^1,9

It is one study, based on parent report, and it shows association, not cause. Its authors suggest sensory reactivity may play a part in which demands a child can manage, and that strategies could address the sensory demands of the environment.⁠²³ Green and colleagues likewise count sensory sensitivities among the autism features behind PDA-type behavior.⁠³

An occupational therapist can assess sensory processing as part of a wider plan; occupational therapy providers are listed in the directory, and noise sensitivity in autistic children covers one common example.⁠²⁴

Relatedmonotropismautistic burnoutsensory over-responsivitysensory seeking and cravingsensory processing disorder

How common is PDA?

No one knows. Without a standard assessment or a diagnosis to count, the National Autistic Society says there are no reliable data.⁠¹ A general population study screened all 15 to 24-year-olds in the Faroe Islands and found 67 autistic young people; of the 50 whose parents were interviewed, 9 met criteria for possible PDA in childhood, almost one in five, or 0.18% of the population.⁠¹³

Does PDA differ between boys and girls?

The evidence is mixed. Newson reported an equal sex ratio, unlike autism, and girls scored higher than boys on the EDA-Q across all case groups; but in adults, being male predicted higher demand avoidance.⁠^6,11,12 The National Autistic Society cautions that social strategies and people-focused interests, which may be more common in autistic women and girls, are not a reason to rule out autism.⁠¹

Does PDA last into adulthood?

Often less strongly than in childhood. In the Faroe Islands study, only 1 of the 9 young people with possible PDA in childhood still met full criteria when assessed, and in the clinical interview sample, the features had become less severe in a proportion of people.⁠^8,13 One commentator reads this as a growing body of evidence that demand avoidance may not persist into adulthood.⁠¹⁸ Adult questionnaires still find demand avoidance traits in the general population, linked with anxiety and autistic traits.⁠^6,19

What do families of children with PDA report?

Strain, blame and relief at being understood. In interviews with 10 mothers in Western Australia, four themes stood out: the value of a shared understanding of PDA, its power over family life, the mothers’ own emotions, and the ways they coped; mothers described exhaustion and being blamed by professionals.⁠² Parents of children with this profile have long reported being judged for poor parenting.⁠¹⁴

In a survey of parents of 42 children above the EDA-Q cut-off, most professionals were experienced as helpful; parents valued those who listened, tried to understand the child, and provided comprehensive assessment, practical strategies and attention to the whole family’s well-being.⁠¹⁴ The sample was well educated: 57% of parents held higher education qualifications, against 28% in a comparison population.⁠¹⁴

An Irish national study of 264 parents, 9 partners, 6 people with PDA and 54 practitioners found that a flexible, informed and individualized approach to assessment and services mattered most; practitioners called for integrated, multidisciplinary services, and a disconnect between education and health systems was reported.⁠¹⁶

The National Autistic Society lists the effects demand avoidance can have: trouble with sleep, self-care and eating, panic and intense distress, strained relationships, and missing school or work through distress or burnout. For parents it lists distress, exhaustion and the strain of seeking support.⁠¹ Missing from most of this research are the people with the profile themselves: the 2021 review found no study of their views.⁠⁴

What helps a child with demand avoidance?

There is limited research on support strategies; the advice comes mostly from personal accounts and professional resources.⁠¹ Green and colleagues argue for individualized management built on an understanding of the child’s sensitivities, co-occurring conditions and environment.⁠³ O’Nions and Eaton recommend strategies that avoid strengthening habitual avoidance and instead build new, mutually rewarding routines that may gradually increase a child’s tolerance of demands.⁠²¹

What are low-demand approaches?

Low-demand, or low-arousal, approaches reduce the number and pressure of demands and change how they are delivered, to help regulate a child’s anxiety; researchers who interviewed parents describe them as at least anecdotally effective.⁠^2,14

1. Reduce the demand load. The first piece of general advice from the National Autistic Society is to reduce or remove demands wherever possible.⁠¹
2. Make requests indirect. Indirect communication, not making demands directly, is a common recommendation, and Newson described disguising demands through an indirect approach.⁠^1,8
3. Share control. A collaborative approach that flattens the hierarchy between adult and child is advised.⁠¹
4. Use novelty, humor and flexibility. Newson reported that these suited children with the profile better than structure and fixed routine.⁠⁸
5. Lead with the relationship. One-to-one relationships with staff were reported to buffer demands.⁠⁸
6. Lower the load in a crisis. Avoid eye contact, touch and confrontational postures, and ask onlookers to give space or move to a quiet place.⁠¹
7. Support the parents. Parents describe exhaustion, and they found professional help most useful when it attended to the whole family’s well-being.⁠^2,14

What is the evidence for low-demand approaches?

Thin. The National Autistic Society describes research on support strategies as limited.⁠¹ The first study of a parent program, published in 2026, enrolled 76 parents in a 12-week program teaching acceptance and accommodation; among those with both assessments, parents reported better quality of life on 10 of 13 measures and improvements in their children’s demand avoidance, with no change in their children’s internalizing or autism symptoms.⁠¹⁵

Its limits are large: there was no control group, parents paid for the program and were better educated and better off than the general population, children’s PDA was identified by their parents, and the program’s developer, who runs a business serving PDA families, was a co-author.⁠¹⁵ An editorial in 2020 called for a robust evidence base and specific strategies in health and education.⁠²²

What tends to backfire?

Pressure. When children with the profile are pushed to comply, their behavior tends to become more oppositional and extreme.⁠² Reward-based behavior management is argued to be ineffective, and incentives are described as not reducing avoidance, one of the ways the profile is distinguished from oppositional defiant disorder.⁠^6,14

How can schools support a child with a PDA profile?

Schools face the same tension as families, because whole-school behavior systems are usually built on rewards and consequences; children with the profile have high rates of challenging behavior at school, and of placement breakdown and exclusion.⁠¹⁴ The National Autistic Society advises a coordinated approach between the person, the family and professionals in education, social care and health, and offers a letter families can send to schools.⁠¹ In Ireland, families and practitioners reported a disconnect between education and health services.⁠¹⁶ UK national autism education standards have included guidance on PDA and teaching strategies.⁠⁸

What conditions occur alongside PDA?

Autism first: in the clinical interview study, all but one person with many PDA features met autism criteria.⁠⁸ Anxiety and intolerance of uncertainty are closely tied to demand avoidance in research with children and adults, and ADHD traits correlate strongly with it in adults.⁠^6,7,20 Researchers have also asked whether PDA is better seen as symptoms of anxiety, oppositional defiance or conduct disorder occurring with autism.⁠²

Distress from unmet demands can end in burnout: the National Autistic Society lists being unable to attend school or work through distress or burnout among the effects, and a commentator has linked demand avoidance to the autism theory of monotropism; see also autistic burnout.⁠^1,18

RelatedGestalt language processingStimmingoppositional defiant disordergeneralized anxiety disorderseparation anxiety in children with special needs

When should you seek an assessment for PDA?

When demands have become a daily crisis. Because PDA is not a diagnosis, the route is an autism or developmental assessment that records demand avoidance, not a PDA test.⁠^1,9 The CDC’s advice for any developmental concern is not to wait: talk to the child’s doctor and ask about screening.⁠²⁵

Ask in advance whether an assessor records demand-avoidant traits or a PDA profile, since practice varies between clinicians.⁠^1,9 Parents found assessment most helpful when it was comprehensive and led to practical strategies.⁠¹⁴

Frequently Asked Questions

Sources

1. National Autistic Society. Demand avoidance. Advice and guidance. Checked October 11, 2026.
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   “A persistent and marked resistance to demands is a characteristic experienced by and observed in some autistic people.” “there is very little research into it and the research that does exist is generally of a low quality”, though it is “widely acknowledged as a characteristic experienced by and observed in some autistic people”. Demands include “a direct demand (an instruction, such as ‘brush your teeth’)”, “an internal demand (for example willing yourself to do something, or bodily needs such as hunger or needing the toilet)” and “an indirect or implied demand (including any expectation, such as a question that requires an answer”); “the demand does not need to be something unpleasant to trigger distress”. Forms of resistance include excuses, distraction, refusal, “passivity/withdrawal” and aggression, “usually as a last resort”, which “may also be a panic response to overwhelming anxiety”; meltdown or panic states “are usually out of the person’s control”. PDA “is a term originally developed by the British psychologist Elisabeth Newson in the 1980s and first used in a published research paper by Newson in 2003”; “PDA is not clinically recognised (it does not appear in the international medical manual, the ICD, nor in the American medical manual, the DSM), which means you cannot receive a standalone diagnosis of PDA.” “some people have a diagnosis of autism with a ‘demand avoidant profile’ or a ‘PDA profile’ noted”; “‘PDAer’ is how many of these people prefer to be referred to”; some suggest “‘Persistent Drive for Autonomy’ as an alternative. Others think the use of the word ‘pathological’ is appropriate because they find these characteristics ‘all-consuming’”. “when demand avoidance was first described, it was thought that autistic people were largely not capable of employing some of the creative and socially sophisticated strategies ... Our current understanding of the autism spectrum acknowledges that many autistic people are indeed capable of these things.” “no research has found strong evidence for the group of traits proposed for PDA or tested the validity or usefulness of Newson’s theory in clinical practice”. Critics argue the characteristics “can instead be understood by considering the individual’s social, sensory and cognitive sensitivities, any co-occurring conditions and whether their environment is suited to their needs”, and argue that “PDA-related products, such as training and conferences, have been promoted to parents and that this creates a looping effect where parents or individuals unintentionally consider behaviour selectively to conform to the proposed traits”; counter-critics “argue that the critics do not have lived experience”. The society says it “accepts the concept of PDA, and its relationship to autism, to an extent that goes beyond the evidence” was a belief its past activity created, and that it has “reviewed our content and approach to be in line with the evidence”. “One point on which there is broad agreement is that more and better research is required.” “the usage of this language in an autism diagnosis is not standardised; there is no standard assessment for PDA”. How common: “We don’t know.” Many autistic people “use social strategies and can have dedicated and intense interests that may be focused on people (these traits may be more common in autistic women and girls, for example), so the presence of these traits is not a reason to discount an autism diagnosis”. “Evidence suggests that persistent and marked demand avoidance demonstrates an intense need for control.” Other conditions suggested: “complex post-traumatic stress disorder (cPTSD)”, ADHD and ODD. “Some (low quality) research highlights a relationship between this characteristic and the presence of both: anxiety, and intolerance of uncertainty”; “some people with lived experience of demand avoidance have suggested anxiety may be the effect (not cause) of perceived threats (demands) to autonomy and control”. Impacts include sleep, self-care tasks such as “personal hygiene, eating and household chores”, “panic attacks, intense emotional distress and/or difficulty regulating emotion”, “difficulties in friendships or other social relationships” and “inability to attend education or employment due to distress and/or burnout”; for parents, “challenges and exhaustion from trying to find effective ways to reduce, disguise or remove demands” and “stress and frustration from trying to access or implement appropriate support”. “There is limited research on support strategies”; general advice includes “reducing and/or removing demands, where at all possible”, “a collaborative approach that flattens hierarchies”, “indirect communication styles (not making demands directly)”, “avoid potential stressors such as eye contact, touch and confrontational postures/physical stances”, “remove any spectators to a distressing situation (by asking people to give the distressed person space or by moving the person to a quiet space if possible)”, “a coordinated approach to support, with the person, family and professionals (i.e., from education, social care, healthcare, etc) involved” and “sensory regulation and creating a sensory environment that works for them”. An autism assessment should record “demand-avoidant characteristics or a strong need for personal autonomy ... with or without the use of any particular terminology such as PDA”. The society offers “a letter for parents and carers of children and young people who experience demand avoidance to send to schools and local authorities”.
2. Curtis S, Izett E. The experience of mothers of autistic children with a pathological demand avoidance profile: an interpretative phenomenological analysis. Discover Mental Health. 2025;5(1):5. PMID 39833592. Checked October 11, 2026.
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   “PDA is not currently recognised within diagnostic classification manuals such as the Diagnostic and Statistical Manual of Mental Disorders (5th ed., text rev., DSM-5-TR) ... or the International Statistical Classification of Diseases and Related Health Problems (11th ed.; ICD-11)”; researchers have debated whether PDA is “a set of outcome ‘symptoms’ of other recognised conditions co-occurring with autism, such as anxiety, oppositional defiance, and conduct disorders”; “Requests for PDA diagnosis by parents are also increasing”; “When PDA children are pushed to comply with demands, their behaviour tends to become more oppositional and extreme”; “parents of PDA children are often blamed by professionals for their child’s problem behaviours and lack of progress”; “a low arousal, low demand parenting approach is at least anecdotally effective”. The EDA-Q is “a freely available 26-item questionnaire developed for research”. Ten mothers in Perth, Western Australia; four themes: “the benefit of a shared understanding about pathological demand avoidance to the parents and their children, the power of pathological demand avoidance and the impact on families, the emotional experience of mothers, and the various ways in which they coped”.
3. Green J, Absoud M, Grahame V, Malik O, Simonoff E, Le Couteur A, Baird G. Pathological demand avoidance: symptoms but not a syndrome. The Lancet Child & Adolescent Health. 2018;2(6):455-464. PMID 30169286. Checked October 11, 2026.
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   The abstract: “The use of pathological demand avoidance as a diagnosis has, at times, led to altered referral practice and misunderstandings between professionals and the families of patients. In our Viewpoint, we reviewed the current literature and conclude that the evidence does not support the validity of pathological demand avoidance as an independent syndrome. Nevertheless, the use of the term highlights an important known range of co-occurring difficulties for many children with autism spectrum disorder that can substantially affect families.” These are best understood “through understanding of social, sensory, and cognitive sensitivities in autism spectrum disorder, identification of frequently occurring comorbid conditions, and assessment of how these problems interact within the child’s social environment”, to “inform individualised management strategies”.
4. Kildahl AN, Helverschou SB, Rysstad AL, et al. Pathological demand avoidance in children and adolescents: a systematic review. Autism. 2021;25(8):2162-2176. PMID 34320869. Checked October 11, 2026.
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   The lay abstract: “Requests for diagnoses of pathological demand avoidance have increased over recent years, but pathological demand avoidance remains a controversial issue.” “13 relevant studies”; “All the studies had based the identification of pathological demand avoidance, directly or indirectly, on descriptions from the original study by Newson and colleagues. However, the methods used to develop these criteria were not clearly described. Most studies relied exclusively on parental report for data, and there was a general failure to take account of alternative explanations for the behaviours under study. No studies explored the views of individuals with pathological demand avoidance themselves.”
5. Company D, Rotella JA. A systematic review of pathological demand avoidance (PDA): a veritable diagnosis or a case of circular logic? Journal of Autism and Developmental Disorders. 2026. Published online July 9, 2026. PMID 42423879. Checked October 11, 2026.
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   The abstract: “12 relevant studies were identified, nine in paediatric populations, two in adults and one in a mixed cohort. Data was usually collected via self-reported questionnaires or surveys. Two diagnostic tools were identified- the EDA-Q and the DISCO although the use of these was inconsistent. Cross-over with other conditions was also noted. Studies were all assessed as being high risk for methodological bias.” “The methodological bias inherent to these studies raises the issue of circular logic and makes it difficult to support any of the diagnostic tools pertaining to PDA, let alone the condition itself.”
6. White R, Livingston LA, Taylor EC, Close SAD, Shah P, Callan MJ. Understanding the contributions of trait autism and anxiety to extreme demand avoidance in the adult general population. Journal of Autism and Developmental Disorders. 2023;53(7):2680-2688. PMID 35437676. Checked October 11, 2026.
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   “Currently, EDA is argued to be part of the autism spectrum, both by researchers and UK charity the PDA Society”; “Since autism is now so heterogeneous and the diagnostic criteria have broadened ..., many traits of EDA could potentially be attributed to autism”. Two online surveys “(Ns = 267 and 549)”: “Both autistic traits and anxiety were unique and equally important predictors of demand avoidance.” “Being male also predicted higher demand avoidance.” “there does not seem to be clear rationale to make EDA a separate sub-division of autism, given the removal of clinical subtypes such as Asperger’s syndrome from the DSM-5”; EDA is thought to differ from ODD in that people “are ‘non-compliant’ in response to very simple demands, may lack the image maintenance seen in ODD, and since incentives are ineffectual in reducing avoidance”; “many features of EDA were in fact commonly found in autistic children (e.g., uncooperativeness, labile mood, blaming others)”; “the authors identified several features they believed to be EDA-specific (e.g., ‘manipulative’ and socially shocking behaviour)”.
7. Stuart L, Grahame V, Honey E, Freeston M. Intolerance of uncertainty and anxiety as explanatory frameworks for extreme demand avoidance in children and adolescents. Child and Adolescent Mental Health. 2020;25(2):59-67. PMID 32307839. Checked October 11, 2026.
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   The abstract: an online survey “(N = 214)”; “Regression analyses indicate that demand avoidant behaviour can be conceptualised in part as a possible attempt to increase certainty and predictability to alleviate increasing anxiety.” “These behavioural features of PDA showed differential relationships with IU and anxiety, although all were predicted by IU, only meltdown demonstrated a mediation effect by anxiety.”
8. O’Nions E, Gould J, Christie P, Gillberg C, Viding E, Happe F. Identifying features of ‘pathological demand avoidance’ using the Diagnostic Interview for Social and Communication Disorders (DISCO). European Child & Adolescent Psychiatry. 2016;25(4):407-419. PMID 26224583. Checked October 11, 2026.
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   “Pathological demand avoidance (PDA) is a term coined by Elizabeth Newson in the 1980s”; key characteristics “included an obsessive resistance to everyday demands and a tendency to use a range of ‘socially manipulative’ strategies to subvert requests (e.g. distraction, targeted shocking behaviour, threats)”; “obsessive need for control, reflected in domineering behaviour to peers and adults”; “‘surface sociability’”, “extreme impulsivity and lability of mood” and “a tendency to appear comfortable in role play and pretending”, “often adopting borrowed roles when interacting with others (e.g. relating to peers in the manner of a teacher)”. Newson “suggested that children with PDA responded best to novelty, humour and flexibility. Development of one to one relationships with staff was reported to buffer demands, which could also be disguised using an ‘indirect’ approach”. “The concept of PDA has grown in popularity during the last decade, particularly in the UK where the description originated. Despite the absence of agreed diagnostic criteria for PDA, the limited research base and its lack of inclusion in the ICD-10 ... or DSM-5”; “inclusion of guidelines on PDA and recommended teaching strategies as part of the national autism standards published by the UK-based Autism Education Trust”; “annual oversubscribed conferences on PDA organised by the UK-based National Autistic Society (NAS) since 2011”. “The term ‘extreme’ rather than ‘pathological’ was used to avoid pejorative connotations.” On the EDA-Q, “a large proportion of those with autism plus behaviour problems (but who had not been identified as having PDA) also scored relatively high”. Eleven DISCO items in 153 people identified 27 with many features; “All but one case met criteria for an ASD.” Severity of features “had declined in a proportion of the sample”. The cutoffs “could not be validated against case report information or independent ‘diagnosis’ of PDA”; the study “brings the field a step closer to a clinician-rated measure of PDA features”. On pretend play, “These proportions do not differ significantly from those within the non-PDA group.” “When Newson first described PDA, she conceived of it as a concept as separate from autism, but part of a set of ‘pervasive developmental disorders’.”
9. PDA Society. What is PDA? UK registered charity 1165038. Checked October 11, 2026.
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   “This is widely understood to be a profile found within some autistic people. The most obvious characteristic of PDA is a determined avoidance of so-called ‘common’ demands of life, including expectations and things the person enjoys doing.” Traits listed: avoiding everyday demands; “Having a sociable relationship style which can mask deeper challenges”; “Using social strategies as part of this avoidance”; “Intense emotions and mood swings”; special interests often related to other people. “All autistic people, including PDAers, are likely to have differences in communication, restricted interests or behaviours, and experience sensory differences.” “PDA isn’t a diagnosis, but during an autism assessment a person can be identified as having a PDA profile.” “not all clinicians and professionals recognise PDA”; “not everyone who self-identifies as PDA considers themselves to be autistic”.
10. World Health Organization. 6A02 Autism spectrum disorder. ICD-11 for Mortality and Morbidity Statistics, release 2026-01, with the clinical descriptions and diagnostic requirements. Checked October 11, 2026.
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    Essential features include “Lifelong excessive and persistent hypersensitivity or hyposensitivity to sensory stimuli or unusual interest in a sensory stimulus, which may include actual or anticipated sounds, light, textures (especially clothing and food), odors and tastes, heat, cold, or pain.” Boundary with Oppositional Defiant Disorder: “oppositional or ‘demand avoidant’ behaviour may be prominent in some children with Autism Spectrum Disorder, whether or not they have accompanying intellectual or functional language impairments and may sometimes be the presenting feature in school-aged children with Autism Spectrum Disorder.” Outbursts “are often associated with a specific trigger (e.g., a change in routine, aversive sensory stimulation, anxiety, or rigidity ...), rather than reflecting an intention to be defiant, provocative, or spiteful”.
11. Newson E, Le Marechal K, David C. Pathological demand avoidance syndrome: a necessary distinction within the pervasive developmental disorders. Archives of Disease in Childhood. 2003;88(7):595-600. PMID 12818906. Checked October 11, 2026.
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    The abstract: “A proposal is made to recognise pathological demand avoidance syndrome (PDA) as a separate entity within the pervasive developmental disorders, instead of being classed under ‘pervasive developmental disorder not otherwise specified’ (PDDnos, DSM-IV).” “including an equal sex ratio (150 cases)”; “Demand avoidance using social manipulation is seen in all children”; “A criterial structure is described, supported by statistical data from a random sample of 50 children diagnosed with PDA, together with a follow up sample of 18 young adults.”
12. O’Nions E, Christie P, Gould J, Viding E, Happe F. Development of the ‘Extreme Demand Avoidance Questionnaire’ (EDA-Q): preliminary observations on a trait measure for pathological demand avoidance. Journal of Child Psychology and Psychiatry. 2014;55(7):758-768. PMID 24117718. Checked October 11, 2026.
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    The abstract: PDA “is a term increasingly used in the United Kingdom to describe children who obsessively resist everyday demands, going to extreme lengths to avoid these. There is debate about its relationship with both autism spectrum disorder (ASD) and oppositional defiant disorder (ODD).” “The validation study involved data from 326 parents of children aged 5-17”; “score on the EDA-Q was significantly higher in PDA than all comparison groups. ROC analysis indicated good sensitivity (.80) and specificity (.85). Across all case groups, females scored higher than males on the EDA-Q.” “Our findings highlight the potential utility of the EDA-Q to assist the identification of this unusual profile for future research.”
13. Gillberg C, Gillberg IC, Thompson L, Biskupsto R, Billstedt E. Extreme (“pathological”) demand avoidance in autism: a general population study in the Faroe Islands. European Child & Adolescent Psychiatry. 2015;24(8):979-984. PMID 25398390. Checked October 11, 2026.
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    The abstract: “The total population of 15 to 24-year-olds in the Faroe Islands was screened for ASD, and 67 individuals were identified”; of 50 with parent interviews, “Nine individuals met criteria for ‘possible clinical diagnosis of PDA’, meaning that almost one in five of all with ASD also had indications of having had PDA in childhood, and that 0.18 % of the total population had had the combination of ASD and PDA. However, at the time of assessment, only one of the 9 individuals with possible PDA still met ‘full criteria’.”
14. Gore Langton E, Frederickson N. Parents’ experiences of professionals’ involvement for children with extreme demand avoidance. International Journal of Developmental Disabilities. 2016;64(1):16-24. PMID 34141287. Checked October 11, 2026.
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    Parents of 42 children above the EDA-Q cut-off. “children with PDA have high rates of challenging behaviors in school, with correspondingly high rates of placement breakdown and exclusion”; parents report “focusing on regulating their children’s anxiety through modifications to the environment and the manner in which demands are delivered”; “There are also objections among professionals about the term ‘pathological,’ which was intended to describe the extent and impact of children’s demand avoidance, but instead, some feel, ‘pathologizes’ the child.” “Traditional approaches to behavior management using reinforcement-based strategies are also argued to be ineffective in PDA”; “Such a shift can be significantly more difficult for schools, whose whole-school behavior management systems are firmly grounded in a reward/consequence approach.” Parents may face “judgment and blame for causing their children’s difficulties through ‘poor parenting’”. “Parents found involvement most helpful when it resulted in comprehensive assessment, appropriate intervention, practical advice and management strategies, and a focus on the well-being of all family members.” “Fifty-seven percent of the parents for whom data were available had NVQ Level 4 education (Higher National Diploma or undergraduate degree) or Level 5 (postgraduate degree) qualifications, compared with 28% of a population sample”.
15. Carlozzi NE, Lombard WL, Troost JP, Graves CM, Miner JA, Fauser AT, Ehrlich C. A comprehensive parent training program for parents of neurodivergent children with pathological demand avoidance: the Paradigm Shift Program pilot study. Pediatric Investigation. 2026;10(3):249-257. PMID 42358897. Checked October 11, 2026.
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    “The lack of sufficient scientific evidence has prevented PDA from becoming a recognized diagnostic category in either the American Diagnostic and Statistical Manual of Mental Disorders (DSM ...) or the European International Classification of Diseases (ICD ...)”. A “12-week educational and training program” designed to teach parents “how to shift their thinking away from traditional parenting paradigms toward radical acceptance and accommodation”. “Seventy-six parents/guardians of children with PDA were enrolled”; “71 parents/guardians completed the pre-program assessment, and 60 (85%) completed the end-of-program assessment”; parents reported “significant improvement in health-related quality of life (HRQOL) in 10 of the 13 PROs” and “significant improvements in demand characteristics” in their child; “There were no improvements in children’s global health, hyperactivity, peer problems, prosocial behavior, internalizing, or autism symptoms.” Parents had to “self-identify that their child (aged 4–17 years) had a PDA profile”; the cohort “enrolled in the program voluntarily and paid to participate in the program. As a result, this sample was more highly educated and had more socioeconomic means than the general population”; “it did not employ a control group”; “Casey Ehrlich is the founder and CEO of Peaceful Parents, which offers both free and paid resources and services for PDA families” and developed the program; the study was approved at the University of Michigan.
16. Doyle A, Kenny N. Mapping experiences of pathological demand avoidance in Ireland. Journal of Research in Special Educational Needs. 2023;23(1):52-61. doi:10.1111/1471-3802.12579. Checked October 11, 2026.
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    The abstract: a national mixed-method study of “N = 264 parents, N = 9 life partners, N = 6 individuals experiencing PDA and N = 54 practitioners”; “Findings suggest that a flexible, informed and individualised approach to assessment and service provision for individuals presenting with a PDA profile is essential. Practitioners universally referred to the necessity for a streamlined, integrated and multi-disciplinary approach. The reported disconnect between education and health systems indicates a need for access to services on an equitable basis.”
17. Kamp-Becker I, Schu U, Stroth S. Pathological demand avoidance: current state of research and critical discussion [in German]. Zeitschrift fur Kinder- und Jugendpsychiatrie und Psychotherapie. 2023;51(4):321-332. PMID 36892327. Checked October 11, 2026.
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    The English abstract: “This paper concludes that PDA is not a diagnostic entity nor a subtype of autism; rather, it is a behavior profile that can be associated with adverse illness progression and unfavorable outcomes.” “Substantial research is needed concerning the occurrence of the behavior profile PDA in diverse disorders, treatment options, and treatment responses.”
18. Woods R. Commentary: Demand Avoidance Phenomena, a manifold issue? Intolerance of uncertainty and anxiety as explanatory frameworks for extreme demand avoidance in children and adolescents: a commentary on Stuart et al. (2020). Child and Adolescent Mental Health. 2020;25(2):68-70. PMID 32307844. Checked October 11, 2026.
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    The abstract: “Demand Avoidance Phenomena (DAP) is a neutral term for Pathological Demand Avoidance, which is sometimes conceptualised as an autism subtype. There is much ongoing controversy around the construct.” The discussion “provides tentative support for monotropism autism theory and the growing body of research indicating that DAP may not be developmentally persistent (a high rate of persons not meeting clinical threshold into adulthood)”.
19. Egan V, Linenberg O, O’Nions E. The measurement of adult pathological demand avoidance traits. Journal of Autism and Developmental Disorders. 2019;49(2):481-494. PMID 30140985. Checked October 11, 2026.
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    “The observer-rated EDA Questionnaire (EDA-Q) for children was adapted as an adult self-report (EDA-QA)”; “PDA can screened for using this tool, occurs in the general population, and is associated with extremes of personality.” “These results suggest that EDA-QA self-reports are most strongly associated with antagonism and extreme emotionality/emotional disinhibition (characteristics associated with personality disorder), and to a lesser extent scores on overt hostility and autism-related factors.” “persons with reported diagnosed ASD had higher ASQ-SF scores, they did not have higher EDA-QA scores”.
20. Egan V, Bull E, Trundle G. Individual differences, ADHD, adult pathological demand avoidance, and delinquency. Research in Developmental Disabilities. 2020;105:103733. PMID 32682221. Checked October 11, 2026.
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    The abstract: “recruiting 132 participants”; “Many of these constructs, but particularly ADHD (r = 0.71, p < 0.001) were significant correlates of PDA, the correlation between ASD and PDA was small, and did not predict PDA.” “for community adult populations, self-reported individual differences in ADHD, emotional instability, and antagonism appear to better predict PDA than ASD”.
21. O’Nions E, Eaton J. Extreme/‘pathological’ demand avoidance: an overview. Paediatrics and Child Health. 2020;30(12):411-415. doi:10.1016/j.paed.2020.09.002. Checked October 11, 2026.
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    The abstract: “We then discuss empirical work describing how anxiety-driven avoidance of routine demands can emerge in children with ASD. We provide recommendations for strategies that aim to avoid strengthening habitual avoidance behaviours, and instead, allow new mutually rewarding routines to develop, which may provide opportunities to gradually increase the child’s tolerance of demands. We argue that using the PDA profile, or describing relevant behaviours, as part of a clinical formulation can be helpful in alerting caregivers and educational professionals to particular challenges surrounding compliance with everyday requests in some children with ASD.”
22. Ozsivadjian A. Editorial: Demand avoidance - pathological, extreme or oppositional? Child and Adolescent Mental Health. 2020;25(2):57-58. PMID 32307837. Checked October 11, 2026.
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    The abstract: “Since its inception in 1980, the term PDA has generated much debate, indeed, arguably few subjects have generated such controversy in the neurodevelopmental literature.” “It will be crucial for both health and education to develop a robust evidence base to understand the driving mechanisms for demand avoidant behaviour, and develop specific strategies”.
23. Rai AJ, Rishworth B, Gutierrez R, Ludlow AK. Sensory reactivity and intolerance to uncertainty: what characterises demand avoidance behaviours in children and adolescents with pathological demand avoidance? Research in Autism. 2026;131:202816. doi:10.1016/j.reia.2026.202816. Checked October 11, 2026.
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    The abstract: “Data from 795 children between the ages of 4 – 17 years old were analysed. Parents of 475 of autistic children and adolescents + PDA, 171 autistic children, and 94 neuro-typical children completed an online composite questionnaire”; “higher levels of anxiety and autism corresponded to higher EDA behaviours for all three groups. While IU and sensory reactivity were not found to be associated with EDA in the autism group”; “this was the first study to illustrate higher levels of sensory reactivity, namely sensory sensitivity and sensory seeking, to uniquely characterise EDA in the children and adolescents identifying with autism + PDA”.
24. Cleveland Clinic. Sensory Processing Disorder (SPD). Health Library, last updated March 20, 2025. Checked October 11, 2026.
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    “Currently, SPD isn’t an official medical diagnosis.” “Researchers estimate that about 1 to 3 out of every 20 people in the general U.S. population have sensory processing disorder.” “Sensory craving (SC). In this type, you need and seek out sensory information for stimulation. But getting the stimulation results in disorganization and doesn’t satisfy the craving.” “your child’s pediatrician may refer you to an occupational therapist. These professionals can assess your child for SPD by watching them interact with certain sensory experiences. They’ll also ask about your child’s symptoms, behavior and medical history”; at school a child may need “Access to headphones to block out background noises while they work” and “A designated break to do a sensory activity, like walking, spinning or swinging”.
25. Centers for Disease Control and Prevention. CDC’s Developmental Milestones. Learn the Signs. Act Early. Page dated February 17, 2026. Checked October 11, 2026.
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    “Don’t wait. If your child is not meeting one or more milestones, has lost skills he or she once had, or you have other concerns, act early. Talk with your child’s doctor, share your concerns, and ask about developmental screening.”
26. 988 Lifeline. 988 Lifeline. US national crisis line. “At the 988 Suicide & Crisis Lifeline, we understand that life’s challenges can sometimes be difficult.” “The 988 Lifeline is available 24/7/365. Your conversations are free and confidential.” “Call, text, or chat with a 988 Lifeline counselor”. Checked October 11, 2026.

Medical disclaimer. This page is for general educational purposes and does not constitute medical advice, diagnosis, or treatment. PDA is not a formal diagnostic category. Always consult a qualified healthcare provider about your child. DrSensory does not endorse any specific therapeutic protocol.