part_of part of part of has_disease_location cognitive disorder brain amnesia true Amnestic syndrome MedDRA:10001949 Gautier Koscielny Amnesia-Memory Loss DOID:4544 Amnestic State MESH:D000647 Pathologic partial or complete loss of the ability to recall past experiences ( AMNESIA, RETROGRADE) or to form new memories ( AMNESIA, ANTEROGRADE). This condition may be of organic or psychologic origin. Organic forms of amnesia are usually associated with dysfunction of the DIENCEPHALON or HIPPOCAMPUS. (From Adams et al., Principles of Neurology, 6th ed, pp426-7)