title: [Insomnias: I. Aetiology, pathophysiology and diagnostics].
abstract: Difficulties to initiate or maintain sleep, early morning awakening and resulting impairment of daytime functioning are a frequent comorbidity of many psychiatric and medical disorders. The so-called primary or psychophysiological insomnia as a distinct independent form of insomnia is a far less frequent condition. This article gives an overview of the diagnostic process for insomniac disorders. Furthermore, up to date neurobiological models of insomnia are discussed.
authors.affiliation: Sektion für Klinische Psychologie und Psychophysiologie/Schlafmedizin, Abteilung für Psychiatrie und Psychotherapie, Universitätsklinik, Hauptstrasse 5, 79104, Freiburg, Deutschland. dieter.riemann@uniklinik-freiburg.de
authors.forename: D
authors.initials: D
authors.lastname: Riemann
authors.forename: G
authors.initials: G
authors.lastname: Hajak
mesh_terms: D001921:Brain / Q000503:physiopathology*; D006801:Humans; D001523:Mental Disorders / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology*; D008959:Models, Neurological; D007319:Sleep Initiation and Maintenance Disorders / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology*