Transwomen are male so they don't belong in conversations about periods
The next 3 examples are of women who had periods but don't anymore
Any other condition is an anamoly and no reason to start teaching little girls anything other than the basic facts of puberty and what periods are and why we have them. Not that any of that really matters since Ms. Knox is just using those conditions to try and place males in conversations they don't belong in in the first place. It's also worth noting that Ms. Knox spends all her time on Twitter trying to explain how she suddenly became a lesbian the moment her husband announced he felt all girly. Funny how it's the women whose sexuality must change to accommodate the men. Related post in the comments