title: [Autonomic dysfunction syndromes associated with orthostatic intolerance].
abstract: In recent years increased interest has focused on the nature and pathophysiology of orthostatic intolerance and syndromes associated with autonomic disorders. Understanding the pathophysiology underlying these syndromes has led to the recognition of several distinct clinical entities with overlapping features and the associated need to reclassify many of the previously unrecognized syndromes. Among the clinical manifestations, syncope and near syncope are frequently associated with orthostatic intolerance. In addition, however, a wide spectrum of symptoms have been described ranging from chronic fatigue to recurrent neurally mediated vasodepressor reactions. The present review focuses on the pathophysiology and classification of syndromes of autonomic dysfunction associated with orthostatic intolerance. Primary and secondary causes of dysautonomia as well as therapeutic approach to these frequently unrecognized syndromes is presented.
authors.affiliation: Medical College of Ohio, Toledo, Ohio, USA.
authors.forename: Blair P
authors.initials: BP
authors.lastname: Grubb
authors.forename: Boris E
authors.initials: BE
authors.lastname: Vesga
authors.forename: Juan Camilo
authors.initials: JC
authors.lastname: Guzmán
authors.forename: Federico A
authors.initials: FA
authors.lastname: Silva
authors.forename: Carlos A
authors.initials: CA
authors.lastname: Morillo
mesh_terms: D001341:Autonomic Nervous System / Q000503:physiopathology; D006801:Humans; D011187:Posture; D012791:Shy-Drager Syndrome / Q000150:complications / Q000175:diagnosis* / Q000209:etiology / Q000628:therapy; D013575:Syncope
vernacular_title: Síndromes de disfunción autonómica asociados con intolerancia ortostática.