Anger, also known as wrath or rage, is an intense emotional state involving a strong uncomfortable and hostile response to a perceived provocation, hurt or threat.

A person experiencing anger will often experience physical effects, such as increased heart rate, elevated blood pressure, and increased levels of adrenaline and noradrenaline. Some view anger as an emotion which triggers part of the fight or flight response.  Anger becomes the predominant feeling behaviourally, cognitively, and physiologically when a person makes the conscious choice to take action to immediately stop the threatening behaviour of another outside force.

Anger can have many physical and mental consequences. The external expression of anger can be found in facial expressions, body language, physiological responses, and at times public acts of aggression