This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Dementia Due to Metabolic Causes, Subject name: Psychiatry
[{'content': "Most common cause of dementia is - \nSelect and explain. \nA. Alzhiemer's disease, B. Vascular dementia, C. Wilson's disease, D. Pick's disease", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Alzhiemer's diseaseCauses of dementiaReversible causes Surgically treatableo Normal pressure hydrocephaluso Brain tumors (frontal lobe tumor)o Meningiomao Subdural hematoma (Head injury)o HydrocephalusMedically treatable o Hypothyroidismo Depressiono HIV infectiono Alcohol abuseo Vitamin B12 , Folate. Niacin deficiencyo Any metabolic or endocrine disturbanceo Neurosyphiliso Hashimoto's encephalopathyo Wilson's diseaseo Celiac disease or Whipple's diseaseo Chronic meningoencephalitiso Drugs and toxin (toxic dementia)Irreversible causeso Alzheimer s diseaseo Vascular (Multi-infarct) dementia o Parkinson's diseaseo Huntington's choreao Creutzfeld Jakob diseaseo Lewy body dementiao Pick's diseaseo Overall Alzheimer's disease is the most common cause. Vascular dementia is the 2nd most common cause.", 'role': 'assistant'}]