People with ADD are hypersensitive. That is not a fault or a weakness of theirs, it is how they were born. It is their inborn temperament. That, primarily, is what is hereditary about ADD.

It is sensitivity, not a disorder, that is transmitted through heredity.

Sensitivity is the reason why allergies are more common among ADD children than in the rest of the population.

— Scattered Minds by Gabor Maté (Page 59)