This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Substance Related and Addictive Disorders, Subject name: Psychiatry
An alcoholic patient comes to your office, he can not tell his name. There is gross in coordination in walking, and his eyes are deted to one side. What is the probable diagnosis? 
Select and explain. 
A. Wernicke's encephalopathy, B. Korsakoff's psychosis, C. Alcoholic hallucinosis, D. Delirium tremens
A: Wernicke's encephalopathy
Answer: A: Wernicke's encephalopathy 
Explanation: Here there is history of ataxia (in coordination) and ophthalmoplegia. The inability to tell name might be because of confusional state. The likely diagnosis is Wernicke's encephalopathy. Wernicke's, encephalopathy acute Thiamine deficiency G- Global confusion O- Ophthalmoplegia (m/c 6th cranial nerve- abducens) A- Ataxia Rx- High dose of parenteral thiamine