PDA Autism Symptoms: What to Look For

What does PDA stand for in autism?

PDA stands for pathological demand avoidance. Some people use the phrase “persistent drive for autonomy” instead, to avoid the word “pathological”.

Aspect describes PDA as an anxiety-driven need to resist and avoid everyday demands (Aspect PDA information sheet). It also notes that PDA is not a formally recognised standalone diagnosis in the international diagnostic manuals.

PDA autism symptoms and examples

Signs vary a lot between people, so treat this list as a guide for noticing patterns, not a checklist. Only a qualified professional can assess this.

Many of these behaviours also occur in other autistic people and in people with anxiety, so a full assessment looks at the whole picture.

PDA autism symptoms in children and teen girls

Children and teens may be described as strong-willed or oppositional, when the behaviour may be driven by anxiety. Some children and teens, including teen girls, hide their difficulties in public, so signs may appear mainly at home.

• A child may refuse tasks at home yet cooperate at school, then release the stress after school in a way that surprises parents.
• A teen girl with PDA autism may agree politely in public, then become exhausted, withdrawn or very distressed in private.
• Pretend play, role play and talking in character may be a way of coping with demands.
• Sudden refusal of school or activities may be a sign of anxiety, so talk to your GP and the school together.

PDA autism in adults

Some adults have no explanation for why everyday demands feel so pressured. Patterns adults may notice include:

• Avoiding emails, bills, appointments or phone calls.
• Struggling with work rules, deadlines and managers who give instructions without choice.
• Needing a lot of recovery time after social contact or tasks that feel imposed from outside.
• Finding relationships easier when expectations are shared and flexible rather than fixed by one person.

TQN Care support workers help with personal care, community access, respite and help around the home across Sydney, Melbourne and surrounding areas (NSW & VIC). Tell us what you need and we will call you back.

Can you have PDA without autism?

In Australia, PDA is usually treated as a profile of autism, so it is generally described within autism rather than on its own. Demand avoidance can also appear alongside anxiety or other conditions.

• Ask your assessor to look at all possible explanations, including anxiety, trauma and other neurodevelopmental conditions.
• Remember that the Australian ADHD Guideline found children and adolescents with autism have a significantly higher risk of ADHD (AADPA), so more than one thing can be present.
• Do not rely on online quizzes, which cannot tell the difference between these explanations.

How PDA autism is assessed in Australia

PDA is not a standalone diagnosis in the international diagnostic manuals, so raise it as part of an autism assessment.

1. 1Write down what you notice. Note when demands cause distress, what helps, and examples from home, school or work over a few weeks.
2. 2Book a GP appointment. Bring your notes and ask for a referral to a clinician who assesses autism.
3. 3Ask the assessor about PDA. Raise it early, and ask how the report will describe demand avoidance and support needs.
4. 4Understand the support levels. Raising Children Network explains that an autism diagnosis gives support levels separately for social communication and for repetitive behaviour, special interests or sensory differences, and that levels can change over time (Raising Children Network).
5. 5Keep the report. It can support school adjustments, therapy and NDIS access.

Our guides to level 1 autism and level 2 autism explain what those levels mean.

PDA autism strategies that can help at home

Because PDA is described as anxiety-driven, many families look for ways to lower pressure rather than win a standoff. These are general ideas to discuss with a clinician who knows the person.

• Offer choices instead of orders, such as “Do you want to brush your teeth before or after your show?”
• Rephrase demands as statements or invitations, for example “the bus leaves soon” instead of “get your shoes on”.
• Build in extra time and a calm place to retreat, so a demand does not become a crisis.
• Use humour, play and shared planning, and drop non-essential demands when anxiety is high.
• Talk to a therapist who understands autism; Raising Children Network and Autism CRC are good places to read more.

PDA autism and the NDIS

If you meet the NDIS access requirements, the NDIS may fund supports that help with daily life.

• Ask your assessor to describe the effect on daily activities, school, work and relationships, not only the diagnosis.
• Read our overview of autism funding through the NDIS before a planning meeting.
• Think about practical supports such as community access, routines at home and respite for the family.

When to talk to a GP or specialist

• Everyday tasks cause distress for weeks and nothing you try seems to lower the pressure.
• A child refuses school or activities they once enjoyed.
• Anxiety, meltdowns or shutdowns affect sleep, eating, friendships or work.
• You are an adult who recognises these patterns and would like an explanation and support.
• You are worried about safety. Call 000 in an emergency, and for crisis support call Lifeline on 13 11 14.

Your next step with support at home

Another calm adult who understands low-demand support can make daily routines easier for the whole family. TQN Care’s NDIS services include support workers who help with routines, community access and respite across Sydney, Melbourne, Newcastle, Wollongong and Geelong. We do not provide treatment, and we will work alongside your clinicians. Autism Connect is a free helpline for questions on 1300 308 699.