Chapter 17: anxiety disorders, autism, adhd, and stress: anxiety disorders characterized by unrealistic, unfounded fear, tension, automatic nervous vigilance for danger. system overactivity, expectation of disaster, constant. Panic disorder: episodic periods of symptoms such as shortness of breath, irregularities in heartbeat, and other autonomic symptoms; accompanied by intense fear. Prevalence is just under 2%; women a little more than twice as likely to suffer from it. Between panic attacks many people w/ panic disorder suffer from anticipatory anxiety: the fear that another panic attack will strike them, may lead to development of agoraphobia. Generalized anxiety disorder: excessive anxiety and worry serious enough to disrupt one"s life. Prevalence is just under 3%; incidence is also about 2 times greater in women than in men. Social anxiety disorder: excessive fear of exposure to scrutiny of others that leads to avoidance of social situations in which a person is called on to perform, which cause intense distress.