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 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:
1. Korsakoff’s psychosis.
2. Wernicke’s encephalopathy.
3. De Clerambault syndrome.
4. Delirium tremens.