anxiety disorders listed in the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, 
Text Revision  (DSM-IV-TR; American Psychiatric Association 2000). The DSM-IV-TR is 
the guide used by mental health practitioners to identify and diagnose various types of 
psychological problems. DSM-IV-TR diagnoses don’t tell us much about the causes  of 
the disorder. Instead, the disorders listed in the DSM-IV-TR are simply descriptions of 
behaviors and experiences that cause interference or distress in a person’s life. In short, 
they are a way of classifying emotional and psychological problems.