This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Organic mental disorders, Subject name: Psychiatry
[{'content': 'Global cerebral dysfunction characterized by alteration in cognitive function and consciousness is known as \nSelect and explain. \nA. Acute anxiety, B. Depression, C. Delirium, D. Dementia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: 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.', 'role': 'assistant'}]