Wernicke-Korsakoff syndrome is a brain disorder due to thiamine deficiency that has been associated with both Wernickes encephalopathy and Korsakoff syndrome. Wernickes encephalopathy can result from alcohol abuse, dietary deficiencies, prolonged vomiting, eating disorders, or the effects of chemotherapy. Korsakoffs amnesic syndrome is a memory disorder that is associated with alcoholism and involvement of the heart, vascular, and nervous system. Although these conditions may appear to be two different disorders, they are generally considered to be different stages of Wernicke-Korsakoff syndrome. Wernickes encephalopathy represents the acute phase and Korsakoffs amnesic syndrome represents the chronic phase. 
What is (are) Wernicke-Korsakoff syndrome ?