PDA symptoms checklist: signs of pathological demand avoidance in children

If like me, you watch other parents with their children and think 'How come their child just agrees?' — or if you regularly ask yourself, 'Why is EVERYTHING so difficult?' — then you've come to the right place. There is a reason everything is so tricky: if your child has ADHD, Autism, or AuDHD (Autism and ADHD) then they could also have a PDA profile (Pathological Demand Avoidance). PDA is where everyday demands trigger intense anxiety and avoidance. The PDA Society reports that around 70% of children with a PDA profile either can't access school or struggle regularly to do so, and 94% of caregivers say punishment makes their child's behaviour worse.

Below is a practical checklist of PDA symptoms you can scan, recognise, and take to a professional. For the research behind PDA and why it's controversial, see understanding PDA and the evidence. For how to get it recognised, see PDA diagnosis in the UK. This page is just about what it looks like.

70%of children with a PDA profile either can't access school or struggle regularly to do so.

94%of caregivers say punishment makes their child's behaviour worse.

Tick what you recognise

There's no official PDA diagnosis checklist — PDA isn't in the DSM-5 or ICD-11, so no agreed instrument comes with it. The interactive tool below draws on the behaviours consistently described across the PDA Society's guidance and the research behind the EDA-Q. Tick what you see consistently, across more than one setting.

What PDA symptoms look like by age

Toddlers and preschoolers (2-4):

• Extreme resistance to basic routines: nappy changes, getting dressed, mealtimes
• Avoidance strategies that seem advanced for their age
• Intense need to lead play; refuses to play unless they set the rules
• Meltdowns that seem disproportionate to the trigger

The difference from typical toddler defiance: the intensity, the pervasiveness across all situations, and the sophistication of the avoidance. A typical toddler says "no." A toddler with PDA negotiates, distracts, creates a diversion, and then tips into panic when none of it works.

Primary school (5-10):

• Avoidance strategies become more elaborate: excuses, negotiation, "I'll do it in a minute" (then never), humour to deflect
• School refusal or extreme difficulty attending
• May appear to cope at school but fall apart at home
• Homework becomes a flashpoint (demand + expectation + time pressure)
• May boss other children or withdraw if they can't lead

Teenagers (11-16):

• Avoidance becomes more internalised: withdrawal, school avoidance, retreating to their room
• Risk of autistic burnout as years of managing demands take their toll
• May refuse to engage with professionals (because engagement is itself a demand)
• Mental health difficulties including anxiety and depression become more common

PDA symptoms in girls

Girls with a PDA profile may be better at masking their avoidance, using passive strategies (withdrawal, "forgetting," becoming unwell) rather than active resistance. The result: later identification or none at all. If your daughter manages at school but falls apart at home, struggles with friendships despite appearing socially capable, or avoids demands in ways that are quiet rather than explosive, PDA is worth considering.

What PDA is not

PDA vs strong-willed: All children push back. PDA avoidance is pervasive (all settings, all demands, including things they want to do) and driven by anxiety. A strong-willed child picks their battles. A child with PDA is in battle with every demand.

PDA vs ODD: ODD is typically described as a motivational issue (won't). PDA is anxiety-driven (can't). Children with ODD often respond to consistent consequences. Children with PDA typically don't. For a deeper comparison, see PDA vs ODD.

PDA vs anxiety-based avoidance: Anxious children avoid specific situations. PDA avoidance extends across the board, including routine tasks at home and enjoyable activities. The pervasiveness is the clue.

The EDA-Q screening tool

The EDA-Q (Extreme Demand Avoidance Questionnaire) is a parent-report screening tool that measures how closely your child's presentation resembles the PDA profile. It's a starting point for conversation, not a diagnosis. A shorter 8-item version (EDA-8) is also available. Both are accessible through the PDA Society.

When to seek help

The pattern needs professional attention when:

• The avoidance is pervasive: all settings, all demands, including things they enjoy
• Consequences don't work: rewards and punishments make no difference or make things worse
• It's causing significant problems: attendance, family life, the child's wellbeing
• The child appears driven by anxiety, not defiance
• There's a marked difference between home and school presentations

The next step is getting the profile assessed. There's a practical guide to getting PDA recognised in the UK, including what language to use with professionals and your EHCP rights.

How to record what you're seeing

Professionals need specific examples. A two-to-three week diary is more useful than a general description:

• What the demand was (specific: "put your shoes on" not "getting ready")
• What avoidance strategies they used
• What happened when the demand was maintained
• Whether the demand was something they wanted to do
• What worked, if anything

If you're considering collaborative problem-solving approaches while you wait, many strategies that work for PDA can be started at home before any formal identification.