Im a bit late in responding, but here's what I know about SSRI and kids...

The thing with SSRI is that they lower your inhibitions and give you energy before your depression is "cured" (read: getting better). Young adults and kids are less able to control impulsivity and are usually even more instable than mature grown-ups. Thereby this effect might be even more pronounced with this group of people. Often also kids have less efficient defense mechanisms and different ways of coping. I think you can simply say that it's different kinds of depressions between younsgters and grown ups Strictly speaking no one should be given antidepressives without close follow up by an experienced psychologist or psychiatrist because of this, but as it is now this is not done. I guess per today its impossible.