BPD behavior - RAGE/ANGER - Intense, inappropriate anger is one of the most troubling symptoms of BPD people. In fact, it's so intense that it's often referred to as “borderline rage.” A person with BPD may react to an event that may seem small or unimportant to someone else, such as a misunderstanding, with very strong feelings of anger and unhealthy expressions of anger, such as yelling, being sarcastic, or becoming physically violent.
