Easily irritable, severe agitation, rage are symptoms of manic-depression and other mental illnesses and disorders. Atypical anti-psychotic medication is used for agitation. Are you taking any? Zyprexa worked well for me for a short period then wore off. It completely drains me, as well which is why I've been on SSDI last 8 years. Doesn't necessarily have to be something psychological. Could be a chemical imbalance. But once it's triggered I can not manage it. I don't act out (but have come close). I know the difference between right and wrong. I would see a PDOC.