True about dementia is A/E: (A) Hallucination are not common, (B) Clouding of consciousness is common, (C) Nootropics have limited role, (D) All
Answer is B. B i.e. Clouding of consciousness is common Clouding of consciousness is a characteristic feature delirium & is helpful in differentiating it from dementiaQ. Two most common causes of dementia are Alzheimer's & multi infarct; both of which are irreversible.