A 45 year 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) DeClerambault syndrome, (D) Delirium tremens
Answer is B. Confusion, nystagmus, ataxia and 6th cranial nerve weakness in an alcohol dependent patient suggest the diagnosis of Wernicke's encephalopathy.