I think PDA is its own neurotype, different from non-PDA Autism and ADHD. That doesn't mean PDA kids, teens and adults can't also be Autistic or ADHD - many are, including at least one of my sons. But it means there's a different logic for how we support PDA children and teens - even if they are also Autistic or ADHD - based on the unique way their brain and nervous system works.