Author: Cory F. Newman Ph.D
There are marked similarities between the types of physical symptoms that accompany each of these three classes of anxiety disorders. The most basic similarity is that they all represent increased sympathetic nervous system activity—the “fight, flight, or freeze” reactions that humans evince in response to the perception of danger and risk. In fact, there is considerable overlap between both the symptomatology and treatment of each of these three classes of anxiety disorders, and many patients meet diagnostic criteria for more than one anxiety disorder. However, there are some important distinctions between the aforementioned anxiety disorders that have implications for case conceptualization and treatment, which will be reflected in the case studies reviewed later in this chapter.