<prompt> Alcoholic presents with psychosis and memory loss. Probable diagnosis is:Wernickes encephalopathyWernickes Korsakoff psychosisAcute psychosisNone of the above  <response>: Alcoholic patients with chronic thiamine deficiency may also have central nervous system CNS manifestations known as Wernickes encephalopathy, consisting of horizontal nystagmus, ophthalmoplegia due to weakness of one or more extraocular muscles, cerebellar ataxia, and mental impairment. When there is an additional loss of memory and a confabulatory psychosis, the syndrome is known as Wernicke-Korsakoff syndrome. Ref: Harrisons principle of internal medicine 17th edition, chapter 71. 