PDA (Pathological Demand Avoidance)

PDA is best understood as a profile within autism — often described as being “autistic, with a PDA profile” — rather than a separate condition. The term was first described by the developmental psychologist Professor Elizabeth Newson in the United Kingdom in the 1980s, with the first peer-reviewed paper published in 2003.

It is a debated concept. Researchers don’t fully agree on whether PDA is a distinct thing, an anxiety response that sits alongside autism, or a set of features better explained by other conditions. For families, the value is practical: if ordinary parenting tactics — reward charts, firm consequences, repeated instructions — keep making things worse, the demand-avoidance lens often explains why, and points to an approach that helps.

What it looks like

• Avoids everyday demands, including ones the child actually wants to do.
• Uses social strategies to avoid — distraction, negotiation, excuses, sometimes charm.
• Can seem sociable on the surface while masking how much they’re struggling.
• A strong need to be in control; sudden mood swings when the anxiety spills over.

What it means in Singapore

You can’t get a “PDA diagnosis” in Singapore — not because of a local gap, but because PDA isn’t a formal diagnostic category anywhere. What you can do is pursue an autism assessment and raise the demand-avoidance pattern with the clinician, so it shapes the support plan. Support runs through the autism pathway — early intervention, therapy, school support — not a PDA-specific programme.

Our full guide covers this in depth: PDA & autism: a parent’s guide to demand avoidance.