I know plenty of people with ADHD diagnosis and normal childhoods without any unusual trauma. Most of them also have comorbidities (stuff typical to autism spectrum, learning or motor function difficulties).
I think ADHD is something you are born with, but there are many other things that can cause similar difficulties, including trauma. And as the linked article mentions, neurodivergent children are more likely to have parents who suffer from similar difficulties, which may increase their chance of suffering some sort of childhood trauma.
I think ADHD is something you are born with, but there are many other things that can cause similar difficulties, including trauma. And as the linked article mentions, neurodivergent children are more likely to have parents who suffer from similar difficulties, which may increase their chance of suffering some sort of childhood trauma.