A discussion I was having with someone the other day... Where is the difference between a teenager just having the average teenage hormones and whatnot, and them having some sort of disorder (mainly, bipolar disorder)? Is pretty much anything "normal" (in this case, normal meaning no mental disorders or anything) as long as it goes away once the person is no longer a teenager? Or is there a certain point where it's just, "No, that's not a normal teenager thing"?