I think we would need more info. Bipolar is characterized by more like mood swings...so, most often we say "extreme highs and lows" meaning periods of mania/hypomania and periods of depression. The problem is that the mania or hypomania can manifest as irritiblity and /or agitation.

From what you say, this aggression only comes during your depressed times, and of course is made worse by alcohol consumption (which I think anyone would say, if it's liek that, then AVOID it!!!). The key to the brief paragraph you wrote is tha tyou did not talk of problems when you are NOT depressed. Unfortunatley, you cuold be having mixed states, dysphoric mania/hypomania...there's jsut no telling..........

WHICH IS WHY...you shuold see a doctor if you are really worried or if this gets in the way of your day to day functioning. Aggression scares me, but does tend to be more common in men, young men...

Take care