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: Forensic Medicine
[{'content': "Ramu aged 45 years, a chronic alcoholic presents with complaints of confusion, ataxia, ophthalmoplegia and peripheral neuropathy. Diagnosis is: \nSelect and explain. \nA. Korsakoff's psychosis, B. Delirium tremens, C. Alcoholic hallucination, D. Wernicke's encephalopathy", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Wernicke encephalopathy is a medical emergency characterized by ophthalmoplegia, ataxia and mental status changes resulting from thiamine deficiency. Most cases are associated with alcoholism, malnutrition, or both. Failure to initiate prompt thiamine therapy in a patient with any of these features may result either in death or in permanent neuropathy or loss of cognitive function. Ref: Stone C. (2011). Chapter 37. Neurologic Emergencies. In R.L. Humphries, C. Stone (Eds), CURRENT Diagnosis & Treatment Emergency Medicine, 7e.', 'role': 'assistant'}]