Anger is an emotion that can range from mild annoyance to intense rage. It is accompanied by physical changes. Your heart rate and blood pressure go up when you are angry, as do levels of the hormones adrenaline and noradrenaline.
Anger is not the same as violence, but anger can lead to violence if not properly controlled. Some people use anger as an excuse for abuse. Violence and abusive behaviour is geared toward having power and control over another person by creating fear. Bottling up anger and not expressing it may lead to an “explosion” or uncontrolled release. It may also manifest itself in other ways such as anxiety, depression, or a psychosomatic sickness.
Anger Management involves learning to express some of your anger in a controlled way gives you an opportunity to release underlying feelings, so that you can start to tackle the issues that are making you angry (Australian Psychological Society).