This document discusses anger, aggression, and their management in mental health nursing. It defines anger and aggression, describes their characteristics and functions, and presents several theories to explain them. Anger is an emotional response to threats or injustice that involves physiological arousal, while aggression refers to intended harmful behaviors. Both can have positive and negative effects depending on how they are expressed. The document also outlines principles for safely managing aggressive patients, as well as pharmacological and behavioral nursing interventions.