i think another word for bipolar disorder is like manic depressive disorder and its when you get majorly disruptive mood swings,causing very little sleep and er pyscotic behaviour can cause violence not a very nice thing to have i know a lot of people that moan because they 'think' they have it and they clearly don't,i think you can actually tell if people have it like they will look properly depressed and then only reasonably happy i'm not really that certain i know more about stuff like schizophrenia which is a horrible thing to have but very interesting