Differentiation between psychogenic and organic amnesia is sometimes quite
difficult. This paper focuses on the psychogenic and organic components of
a complex case of amnesia rooted in remote and prolonged traumatic stress a
nd manifested under circumstances evoking dissociated memories. The Transie
nt Global Amnesia (TGA) of a concentration camp survivor who developed sudd
en amnesia during a psychiatric intake interview was clearly triggered by t
he pressure of repressed Holocaust memories. The importance of distinguishi
ng between TGA and dissociative amnesia is emphasized, and the role of psyc
hological upset as a precipitant in TGA is stressed.