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.

For what it's worth I know people with ADHD who have no evidence of childhood trauma.

I'm saying this to offer an honest counterpoint to your anecdote. I don't think you meant to imply that ADHD is entirely due to trauma, but in fairness to parents it's probably worth entertaining the idea that some kids are just born that way.

I have some friends that had hard experiences growing up from their parents because of their ADHD. ADHD effects kids earlier in development and requires some extra attention from parents (who also may have ADHD). It might be more likely that kids with ADHD have trauma because of their parents reaction to it.

I believe current research results indicate about 75-80% of ADHD can be attributed to genetics. In other words there are room for other factors but genetics clearly dominante in our current understanding of ADHD.

> I'm not a scientist, but from personal experience every single person I've met with ADHD has had severe childhood trauma

I have an ADHD diagnosis. The only particularly traumatic thing in my childhood was my parents getting divorced when I was a teenager because my mother had an affair. I already had some symptoms of it before that happened. Prior to that, my parents might not have been the best parents you could possibly have, but they didn’t do anything that would merit the label “severe childhood trauma”

Too much heritability for trauma alone to be the whole story. It's likely genetics produce latency and environment triggers, if trauma is indeed a big part of the picture.

> every single person I've met with ADHD has had severe childhood trauma.

Every person with headache I met had painkillers.

Therefore their pain is caused by painkillers.

Daft.

this is simply not true, and there's tons of scientific evidence of the contrary. ADHD makes you vulnerable to abuse because generally speaking people have a hard time dealing with the foibles of ADHD people. That makes you a target. We know that from science, there's no point in theorizing. ADHD is mostly genetic, highly hereditary and both under diagnosed and under treated. That's all there is to it.