Yes. My brother has it - Bipolar and / or manic depressive. I don't talk to him since he's a fucking liability, a sponge, just as bad as he is mad, and constantly threatening suicide if he doesn't get his own way.
He has my mother bled dry of money, blames all his problems on anyone else he can, has no conscience for what he says or does since "It's everybody else's fault".
When he takes his medication he's normal enough but he's such a lazy bum he couldn't even be bothered to do that. Whether they're all like that i don't know, but speaking from experience.. best off taking a wide berth.
Oh and p.s i don't need anyone telling me how i should or should not treat him since nobody knows my personal situation with him, so if you were gonna go getting on your high horse i wouldn't even bother.
Yes this sounds like a description of my cousin, classed as a schizophrenic, however he does fuck all apart from take drugs morning, noon and night.