A 45 year old male with a history of alcohol dependence presents with confusion, nystagmus and ataxia. Examination reveals 6th cranial nerve weakness. He is most likely to be suffering from:: (A) Korsakoff's psychosis, (B) Wernicke encephalopathy, (C) De Clerambault syndrome, (D) Delirium tremens
Answer is B. Wernicke encephalopathy is characterised by a triad of confusion, ophthalmoplegia and ataxia in an alcoholic patient Ref : Harrison's Principles of Internal Medicine 21st ed