Yeah I think you might be right on that one, certainly seen that chickenfoot fact myself...

My psychiatrist did say it's not uncommon to get depression following a psychotic episode, so maybe that's it... schizophrenics tend to get depressed after not during their episodes. Although the water of course can get muddied by the fact acute psychosis can make one suicidal anyway sometimes.

Who knows, I guess it's probably a fairly blurred distinction.