Thiamine deficiency is known to occur in all of the following except
beriberi, may or may not be associated with hea failure and edema acute pernicious (fulminating) beriberi, in which hea failure and metabolic abnormalities predominate Wernicke encephalopathy is associated especially with alcohol and narcotic abuse ref harper 13th ed page 556
Food faddist
Homocystinemia
Chronic alcoholic
Chronic hea failure
vitamins