Citing the article, "while a decrease in symptoms at puberty is common for boys, the opposite is true for girls, whose symptoms intensify as estrogen increases

Citing the article, "while a decrease in symptoms at puberty is common for boys, the opposite is true for girls, whose symptoms intensify as estrogen increases in their system". IANA doctor or chemist but if there is interaction with hormones, it's probably different on a chemical level. By which I mean that the brain chemistry is affected in the same way by ADHD but interaction with sexual hormones changes behaviour in different ways.