In some official descriptions of PDA, a "Lability of mood" is described. Here is my interpretation of the many moods of PDA and yes, much like Jack Jack from the incredibles, we can switch between them pretty fast.
When I feel like being alive is unbearable, and sometimes I just do, I can see how people get to the point of being suicidal, and I can see how the next steps occur. However...
The other response we get, a lot, is that all autistic people experience demand avoidance and therefore PDA does not require it's own diagnosis. I hear this a lot and from autistic advocates, professionals, commissioning groups and autistic people. It is a fundamental misunderstanding of PDA.
This one is particularly common if the child is already identified as having Attention Deficit Hyperactivity Disorder (ADHD) or as being on the Autism Spectrum (ASC). When parents research further, or end up in an ADHD or ASC group on Facebook, they are likely to come across mention of PDA and this is when their brains can potentially explode.
Why are there so many letters? What in the hell is the difference between being oppositional and being demand avoidant? Is one worse than the other? The PDA description sounds just like my child but they aren't autistic, are they, wait, are they?
I get it, I have been right there...