This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Organic Mental Disorder, Subject name: Psychiatry
[{'content': 'True regarding Delirium are all except: \nSelect and explain. \nA. Acute onset, B. Sleep disturbance, C. Myoclonus, D. Normal consciousness', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ref: A Short Textbook of Psychiatry by Niraj Ahuja, 6th editionExplanation:Clouding of consciousness is a characteristic ofDeliriumDELIRIUMMost Common organic disorder seen in clinical practice* Delirium is characterized by the followingAcute onsetClouding of consciousnessDisorientationDecreased attention spanDistractibilityMarked perceptual disturbancesInsomnia at night with daytime drowsinessWorsening of symptoms in evening and night (Sun downing)Impairment of registration and retention of new memoriesPsychomotor disturbances - agitation &. retardationAutonomic dysfunctionSpeech disturbances - slurring of speech, incoherence, dysarthriaFleeting delusionsMotor symptoms - asterixis, mutifocal myoclonus, carphologia, floccillation (Picking movements at coversheets & clothes).Occupational delirium (elaborate panto- mimes as if continuing the usual occupation in a hospital bed )', 'role': 'assistant'}]