Dry Beriberi Post Roux-en-Y Gastric Bypass Surgery.

Bariatric surgery is an effective strategy for achieving substantial weight loss, prolonging survival, and improving the comorbidities associated with obesity. Nutritional deficiency is a commonly recognized post-procedural complication. Here, we present a case of a patient with paresthesia, lower extremity weakness, and altered mental status one year following Roux-en-Y gastric bypass, who was found to have multiple vitamin and micronutrient deficiencies and was diagnosed with beriberi in the setting of profound thiamine deficiency.