Global cerebral dysfunction characterized by alteration in cognitive function and consciousness is known as
Delirium is the commonest organic symptom seen in clinical practice. Characterised by acute onset, clouding of consciousness, disorientation, asterixis, multifocal myoclonus, occupational delirium, tone and reflex abnormalities (Ref: A sho textbook of psychiatry, Niraj Ahuja, 7th edition, pg no.19). Alteration of consciousness is not seen in cases of anxiety, depression & dementia.
Acute anxiety
Depression
Delirium
Dementia
Organic mental disorders