<prompt> Not a diagnosticdefining criteria for amnestic disorderVisual hallucinationTransient delusionImpaired concentrationattentionAll  <response>: A i.e. Visual hallucination; B i.e. Transient delusion; C i.e. Impaired concentrationattention For diagnosis DSM IV requires Development of memory impairment as manifested by impaired ability to learn new information or the inability to recall previously learned informationQ. Memory disturbance causes significant impairment in social occupation functioning represents a significant decline from a previous level of functioning. Memory disturbance does not occur exclusively during the course of a delirium dementia. May be dt general medical condition including trauma or substance induced alcohol, hypnotic, sedative etc . ICD-10 criteria for organic amnesic syndrome A. Memory impairment, manifest in both Defect in recent memory impaired learning of new material i.e. antegrade amnesiaQ. Reduced ability to recall past experiences retrograde amnesiaQ. B. Absence of or there is no Defect in immediate recall tested by digit span Clouding of consciousness disturbance of attentionQ delirium Global intellectual decline dementiaQ C. Objective evidence history, examination or lab test of an insult to or disease of brain especially involving bI diencephalic medial temporal structures but other than alcoholic encephalopathy . Confabulation, emotional change apathy lack of initiative lackof insight are addition pointers to diagnosis but are not invariably present. 