<prompt> Korsakoffs syndrome is due to deficiency of -ThiamineNiacinFolatePyridoxin  <response>: Ans. is a i.e., Thiamine o Wernicke - Korsakoff syndrome or wemicke-Korsakoff psychosis is the name given for the amnestic disorders which include Wernickes encephalopathy a set of acute symptom and Korsakoff syndrome a chronic condition.o These two syndrome occur due to deficiency of thiamine.o Most common cause precipitating thiamine deficiency causing wernicke-Korsakoff syndrome is chronic alcoholism.o Other precipitating causes are prolonged starvation causing malnutrition, hyperemesis gravidarum, HIV-AIDS, bariatric surgery, prolonged intravenous hyperalimentation, hemodialysis for CRF, and malignancies gastric carcinoma. 