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': "Dementia is seen in all except \nSelect and explain. \nA. Schizophrenia, B. Alzheimer's disease, C. Huntington's chorea, D. Pick's disease", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Common causes of dementia are Parenchymatous brain diseases (Alzheimer&;s disease, Pick&;s disease, Parkinson&;s disease, Huntington&;s chorea, Lewy body dementia) Vascular dementia Toxic dementia- Psychotropic drugs Metabolic dementia- Wilson&;s disease Endocrine causes- Thyroid, parathyroid, adrenal dysfunction Deficiency dementia- Pernicious anaemia Dementia due to infections- Neurosyphilis Neoplastic dementia Traumatic dementia- Chronic subdural haematoma Hydrocephalic dementia- Normal pressure hydrocephalus (Ref: A sho textbook of psychiatry, Niraj Ahuja, 7th edition, pg no.24)', 'role': 'assistant'}]