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Psychiatric disorders (organic)

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Organic psychiatric disorders are psychiatric disorders which are caused by demonstrable pathology of the brain or other organ.

The causes include:

  • structural disease e.g. brain tumour
  • epilepsy
  • anoxic or hypoglycaemic brain damage
  • degenerative changes e.g. Alzheimer's dementia
  • brain trauma

Organic psychiatric disorders are classified as follows:

  • acute generalized impairment (delerium)

  • chronic impairment:
    • generalized (dementia)
    • specific syndromes

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