Anxiety disorders are a product of modern life. The amount of stress that we face daily may lead to serious anxiety disorders and panic disorders. Anxiety is characterized as extreme reactions to scary situations. Suppose someone follows you into a dark alley, those anxious feelings of a racing heartbeat and sweaty palms that you experience gives way to heightened senses and a rush of adrenalin that can save your life. Your body is preparing to run away or if that is not possible to fight till the end. This is called the fight or flight syndrome.
Each one of us has experienced at some time or the other panic or anxiety in small ways. Like the fight or flight example, it can save life. In new situations, a normal person gets panicky but when the outcome that he is afraid of fails to materialize, the anxiety stops. But for a person who is suffering from chronic anxiety, this is not the case.