<prompt> Korsakoffs psychosis is seen inAcute alcoholismCarbon monoxide poisoningChronic alcoholismMultiple sclerosis  <response>: C Chronic alcoholism Conditions resulting in the vitamin deficiency and its effects include chronic alcoholism and severe malnutrition. Alcoholism may be an indicator of poor nutrition, which in addition to inflammation of the stomach lining, causes thiamine deficiency. Other causes include dietary deficiencies, prolonged vomiting, eating disorders, or the effects of chemotherapy. It can also occur in pregnant women who have a form of extreme morning sickness known as hyperemesis gravid a rum. Mercury poisoning can also lead to Korsakoffs syndrome. It has also been caused by centipede mukade bites in Japan.There is no specific treatment because the previous thiamine deficiency produces irreversible damage to the medial thalamic nuclei and mammillary bodies. Mammillary body atrophy may be visible on high-resolution MRI. 