Answer:
a disease of blood vessels supplying heart muscle, a disease of blood vessels supplying brain ,a disease of blood vessels supplying legs and arm...stroke or heart attack.
The advice I would give to a friend that behaves that way is that he or she should react on a more calm way because responding to conflict with more confrontation affects people's relationships in a way that nobody wants to be alongside someone troubled or controversial. People often tend to stay away from this kind behaviors just because they think that these people are hard to get along with.
So, the advice is just to tell him or her that listen to the others and try to fix problems by calmly talking with others so that you built comfortable relations.