Does This Address an Old Controversy?

For eons, researchers have stated that bipolar disorder manifests in person's late-teens or twenties. For a long time, that has also meant that the disorder was largely undiagnosed in adolescents and children, although that has been changing in recent years. Here's a study showing that 20 percent of the teen admissions to a psych hospital met the criteria for bipolar disorder. That has interesting implications for the old debate, as well as for the fact that most of these teens' initial diagnosis was depression. Keep in mind, too, that we are talking about admits to psych unit, not prevalence in the general population. Of course, it also has all manner of implications for treatment and meds, but that's for another day.