I'd be happy to. I think your points are very well taken, and certainly the teenager who has abnormal periods may not know they're abnormal. There is certainly a difficulty with sharing that information. Sometimes there is still a certain mystery and certain taboo about discussing menstruation. That's problematic, and that's one of the points that has to be addressed in understanding what a normal period is and what an abnormal period is.
I would take Dr. Jolly's point, which is that when the period is interfering with the person's quality of life and they are unable to function during the time of menstruation, that's a problem. To me, that's the simplest way to put it. If they're unable to function and having to plan their life around their periods and are missing school, work, etc., then that's a red flag, essentially.
That's what I'd say about that.