The editors of this collection, Extraordinary Disorders of Human Behavior , set out to collate material on rare and unusual disorders that is scattered throughout the psychiatric literature and to contemporize and update [the material] in one clinically relevant volume. Rationalizing that although the average clinical may see only one or two of these disorders in a lifetime, they justifiably contend that partial or fragmentary expressions of these disorders may be frequently observed in dream material, fantasies, and behaviors and, as such, should be of interest and fascination to all clinicians. The reader, then, is newly introduced to or refamiliarized with, as the case may be, the gamut of situationspecific and idiopathic syndromes such as folie a deux, Ganser's syndrome, Gilles de la Tourette's, and Capgras' syndromes; the culturebound phenomena such as amok, latak, and wihtigo; paraphilias such as necrophilia, vampirism, and zoophilia; and a number of other syndromes that are