This article deals in detail with the pathophysiolgy of syncope. Syncope is
classified in three etiological groups: syncope due to reduced cordial out
put, due to impaired neuronal control mechanisms and due to atherosclerosis
of the brain supplying arteries or impaired cerebral autoregulation, respe
ctively. The diagnostic work-up is decribed as well as therapeutic strategi
es according to the underlying cause ore discussed.