amnestic disorder

Impaired memory resulting from some specific organic impairment within an individual who otherwise has a clear consciousness (that is, no conditions such as delirium or intoxication) and no loss of major intellectual ability. The memory loss may be short term, which results in inability to retain newly acquired information, or long term, which results in inability to remember information that was known in the past. If memory loss occurs where no organic impairment is known to exist, the condition is known as psycho-genic amnesia.