How neat - thanks for sharing, Jessica!
Cat, I was wondering same: do they mean onset of clinically significant symptoms, or do they mean actual diagnosis? For many people, there's rather a large gap there. I reported my symptoms about 6 years ago (was told that D 15-20 times/day is "just normal for some people").
Plus, the longer you go untreated (since they wouldn't help me until I had a diagnosis) can mean that the inflammation has had more time to do damage. I wonder -- certainly can't say for sure, but I do wonder -- if the long lag time to starting treatment is why I'm still suffering and unable to get ahold of my symptoms 6 months after diagnosis.