title: [Always tired--what is behind it?].
authors.affiliation: Klinik und Poliklinik für Psychiatrie und Psychotherapie der TU München, Klinikum rechts der Isar, München. michael.wiegand@lrz.tum.de
authors.forename: Michael H
authors.initials: MH
authors.lastname: Wiegand
mesh_terms: D003863:Depression / Q000150:complications / Q000175:diagnosis; D003937:Diagnosis, Differential; D005194:Family Practice; D005221:Fatigue / Q000175:diagnosis / Q000209:etiology / Q000628:therapy; D005260:Female; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000150:complications / Q000175:diagnosis / Q000523:psychology; D009290:Narcolepsy / Q000175:diagnosis / Q000209:etiology; D007319:Sleep Initiation and Maintenance Disorders / Q000175:diagnosis / Q000209:etiology / Q000523:psychology; D012893:Sleep Wake Disorders / Q000175:diagnosis / Q000209:etiology / Q000523:psychology