No. Please stop spreading misinformation.

ADHD is something you are born with it. If one biological parent has ADHD there is a 40% chance the child will have it as well. We already know there is a strong genetic link. It is NOT caused by trauma.

There is a huge overlap in symptoms between ADHD and complex PTSD. Yes, one needs to be careful to not confuse the two. That is why when I was diagnosed with ADHD, I was also checked for trauma or any other conditions that could explain my symptoms better. This is the recommended and required procedure for diagnosis.

Furthermore many ADHD people also often have (C)PTSD because living with ADHD can in itself be very traumatic, especially when undiagnosed. And neurodivergent people are also more likely to be victims of abuse.

ADHD is not caused by "abusive households" because again, you are born with it. Also getting an ADHD diagnosis is probably harder to get than an PTSD diagnosis because most psychologists will expect trauma and is quite normal and expected to talk about trauma in therapy. In fact the whole field of Psychoanalysis that is the second most common therapy method after behavior therapy is based on working through childhood experiences.