Anxiety disorders

Abstract

The anxiety disorders are conventionally subdivided into: generalised anxiety disorder (GAD), panic disorder (PD), social phobia (social anxiety disorder (SAD)), posttraumatic stress disorder (PTSD) and obsessive-compulsive disorder (OCD). The current edition of the Diagnostic and Statistical Manual of Mental Disorders, the (DSM)-IV-TR lists 12 anxiety disorders, with broadly similar categories listed in the International Classification of Impairments, Disabilities and Handicaps, 10th revision (ICD-10). Neurochemistry and brain imaging studies have influenced the development of theoretical models of GAD. Current neuroanatomical models of panic disorder draw on the understanding of the functi..