Post-traumatic embitterment disorder
Post-traumatic embitterment disorder (PTED) is defined as a pathological reaction to a negative life event, which those affected experienced as a grave insult, humiliation, betrayal, or injustice. Prevalent emotions of PTED are embitterment, anger, fury, and hatred, especially against the triggering stressor, often accompanied by fantasies of revenge.
Source: Wikipedia — Post-traumatic embitterment disorder (CC BY-SA 4.0)