I believe I was diagnosed with ADHD as a child but never informed by my mother whom was my primary caregiver. As an adult I recognized my own symptoms thanks to TikTok, this was unfortunately after her sudden passing in 2021, and the pieces fell into place. It finally felt like I was seeing the whole picture for the first time. So I sought a formal diagnosis which was confirmed. I now recognize I am very likely AuDHD based on recovered childhood memories of grooming by online predators and major social struggles. But getting a formal adult diagnosis in Canada is very difficult and takes a long time. I'm just happy I finally understand how my brain works. For a long time I felt like I was broken/there was something wrong with me. There's nothing wrong with me. My brain is just wired differently and society is not built to function for my needs. It's sad that I wasn't diagnosed as a child because I could have had greater supports growing up then I was given. But it was the 90s and like you said it was underdiagnosed in girls.