Prevalence and nosological status of generalized anxiety disorder

Abstract

Background: The diagnostic criteria for generalized anxiety disorder (GAD) and its status as an independent mental disorder have been controversial. More recent epidemiological data provide a more precise picture of this disorder and its specific features. Methods: A systematic overview is given in regard to prevalence, course and comorbidity, impairment, and help-seeking behavior as well as to specificity of the core symptom (worries). Results: GAD is a frequent disorder with high incidence rates in middle-age groups, which are not seen in other anxiety disorders. Despite the high comorbidity GAD can be validly distinguished. Clinically relevant worries have been proven as specific for the disorder. The impairments are also considerable for patients without comorbid disorders. Conclusions: Research supports the independent status of GAD and the importance of this diagnosis. Unsolved questions are to be analyzed in future research.