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8 - Anxiety disorders

from Section 2 - Psychiatric Disorders

Published online by Cambridge University Press:  22 August 2009

Robin M. Murray
Affiliation:
King's College London
Kenneth S. Kendler
Affiliation:
Virginia Commonwealth University
Peter McGuffin
Affiliation:
University of Wales College of Medicine
Simon Wessely
Affiliation:
Institute of Psychiatry, London
David J. Castle
Affiliation:
University of Melbourne
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Summary

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 functional neuroanatomy of fear conditioning in animals. SAD is second only to specific phobia as the most common anxiety disorder in population-based community studies; onset is in the mid-teenage years and extends into the middle of the third decade. There are a wide range of medical conditions that can cause and perpetuate symptoms of anxiety.
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Essential Psychiatry , pp. 147 - 179
Publisher: Cambridge University Press
Print publication year: 2008

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