Sorry -
The relationship may take a bit to put in words here. At the least a person using is usually anxious and possibly agitated. Lot of problems go along with opiate addiction. I will assume that you are speaking of a very strong use or an addiction situation. Money problems run with the crowd - and its much easier to be emotionally upset when financially strapped. A steady user is in flux with being high, being in withdrawal, and being in drug seeking mode. Not even close to anything resembling stable. Very tenuous emotional state. Judgement is impaired and decisions are not always optimum. Physically a person has blood pressure issues along with an assortment of other things. Just an environment that would make a person suprised if there werent a relationship between opiate use and anger management.
i have an issue with anger as well and never have i am currently detoxing from methadone and i get so angry sometimes for no reason and i stay that way for hours till i cool down i have never been a angry person but i just feel on the edge and have no idea why. Maybe the detox but why?
Since opium is sedating, it would sedate your anger. I guess you could call that management of a sort. But your anger would surface again when the effects of opium wore off.