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': "Which of the following is an example for reversible dementia? \nSelect and explain. \nA. Normal pressure hydrocephalus, B. Alzheimer's dementia, C. Lewy body dementia, D. CreutzFeldt Jakob disease", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Impoant possibly reversible conditions are: Substance and medication related Anticholinergics, anti-hypeensives, sedative hypnotics Psychiatric disorders Depression Metabolic and endocrinal disorders Hypothyroidism, Vitamin B12 deficiency, Hepatic and Renal failure Neurosurgical conditions Normal pressure Hydrocephalus, Brain tumor, Subdural hematoma Neuroinfections Herpes encephalitis Miscellaneous Significant sensory deficits', 'role': 'assistant'}]