There is talk of anxiety disorder when the reaction alert a person to a situation or event promptly stressful is disproportionate, excessive and persistent strength in time, or when the reaction is triggered in situations that are just perceived as threatening by the person suffering from this disorder. Treatment for anxiety is based primarily on psychotherapy but the duration will depend on each patient. The most common anxiety disorders and their symptoms are: generalized anxiety disorder, a permanent state of chronic stress in which the subject suffers from excessive worry and nervousness even without apparent cause;the phobic disorder that causes the person in an irrational and persistent fear of an object, activity or situation specific, causing their avoidance (eg, fear of flying);anxiety attack, recurrent crisis without any direct cause fear spontaneously, causing extreme anxiety with symptoms such as palpitations, feeling of choking, trembling&hellip ;; obsessive- compulsive disorder, which are irrational thoughts and actions the patient can not fail to have or do to avoid experiencing anxiety (eg, wash hands frequently with an extreme fear of catching something);disorder and post- traumatic stress reactions, acute or posttraumatic stress, characterized by persistent memories, exaggerated emotional state monitoring, and general reduction of interest in daily activities.