This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
Which of the following is not associated with dementia: March 2011 
Select and explain. 
A. Forgetfulness, B. Alteration of consciousness, C. Reduced personal care, D. Loss of neurons in brain
B: Alteration of consciousness
Answer: B: Alteration of consciousness 
Explanation: Ans. B: Alteration of consciousnessThere is impairment of judgement and impulse control, and also impairment of abstract thinking There is however usually no impairment of consciousness in dementia (unlike in delirium) Dementia:Chronic onsetNo disturbance of consciousnessCognitive impairmentPersonality alterationImpaired memoryImpaired judgmentAbsent diurnal variation