Turns out I also become an aggressive, pedantic dickhead...
My apologies, Birc.
In terms of 'triggers', I can't think of any for the Major Depressive phases. To me, that was always a defining feature; if I could name a specific event/reason, I was not depressed in the clinical sense.
If I couldn't think of a specific cause, but felt that hollow, icy emptiness consistently - I knew to pay close attention to my behaviour.
Mania, conversely, has innumerable triggers. Sleep deprivation (an awful cycle - lose sleep, become hypomanic, sleep even less, enter Mania, stop sleeping entirely), stress, social issues, interpersonal relationship problems, isolation, medications (SSRI's WILL cause me serious problems), particular drugs (dopaminergic stimulants and dissociatives are my worst enemy), seasonal changes, poor diet.
The list goes on.
