DSM-III

This is a residual category reserved for syndromes that do not meet the criteria for any of the other Organic Brain Syndromes and in which there are maladaptive changes during the waking state with evidence, from either physical examination, laboratory tests, or history, of a specific organic factor that is judged to be etiologically related to the disturbance. An example would be the "neurasthenic" picture associated with early Addison's Disease.

This category should also be used when the individual has an Organic Brain Syndrome with features of more than one syndrome but not enough of any one to meet the criteria for a single syndrome.

Diagnostic Criteria

A. The disturbance occurs during the waking state and does not fulfill the criteria for any of the previously described Organic Brain Syndromes.

B. Evidence, from the history, physical examination, or laboratory tests, of a specific organic factor that is judged to be etiologically related to the disturbance.

DSM-IV

See Delirium, Dementia, and Amnestic and Other Cognitive Disorders and Substance-Induced Disorders

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