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  • Title: [Review of recent empirical studies of the classification, pathogenesis and therapy of anxiety disorders].
    Author: Bronisch T.
    Journal: Fortschr Neurol Psychiatr; 1990 Mar; 58(3):98-113. PubMed ID: 2186992.
    Abstract:
    Beginning with the eighties, a paradigm-change concerning anxiety disorders has taken place in considerable parts of psychiatry. Anxiety disorders are no longer regarded as consequences of conflicts and ineffective defences or as concomitants of other psychiatric disorders but rather as disorders of their own. This resulted in a modified outlook on anxiety disorders focusing on the acute panic attack (Panic disorder) instead of focusing on chronic anxiety (Anxiety neurosis). This paper reviews recent empirical studies concerning classification, pathogenesis, and therapy of anxiety disorders, i.e. after introduction of the concept of Panic disorder. Epidemiological studies could demonstrate that in western countries anxiety disorders account for the most frequent psychiatric disorders with prevalence rates of 2.0% to 4.7%. Panic disorders show prevalence rates of 0.4% to 1.1%. Results of recent follow-up studies indicate a favorable course for outpatients and an unfavorable course for inpatients with anxiety disorders. Family studies reported on positive familial loading for Panic disorder but not for Agoraphobia and Generalized anxiety disorder. A twin study found higher concordance rates for panic attacks and Agoraphobias in monozygotic twins than in dizygotic twins. Pharmacological provocation studies with lactate infusion, CO2-inhalation, and administration of Caffeine, Yohimbine, Isoproterenol showed a higher vulnerability of patients with Panic Disorder as compared to healthy controls. However, all studies display methodological short-comings and could be interpreted differently as to the concept of a biologically determined vulnerability. Provocation studies using inverse Benzodiazepine-agonists dealt only with healthy probands. Whereas life events play a rather unimportant role für the pathogenesis of anxiety disorders, recent studies point to the influence of cognitive processes and personality variables for the pathogenesis of anxiety disorders. Concerning treatment of anxiety disorders and especially of panic disorders, pharmacological studies as well as studies of behavioural therapy indicate very good results for acute treatment and good results for behavioural therapy with respect to one to four year follow-up studies. Recently, combined drug and psychotherapy gains growing interest. Conclusions are drawn with respect to the usefulness of the new classification, i.e. after the introduction of Panic disorder as a diagnostic category, and references are given for further research strategies.
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