Autism and ADHD are highly layered with maladaptations. You get a domino effect occuring, with the obvious symptoms down the chain. Other conditions can function similarly, and pull in the same maladaptations.

It’s also worth noting that ADHD and autism are spectrums. It’s possible to have mild tendencies that don’t technically qualify. When other conditions cause disruptions, the symptoms can get more pronounced, or lead to additional maladaptations.