Vitamins and Nutrition USMLE Step 1 Practice Question
A 48-year-old man with severe alcohol use disorder and chronic malnutrition presents with a 3-month history of chronic diarrhea, irritability, and disorientation. Vital signs show BP 118/76, HR 92, RR 16, Temp 37.2°C. Physical examination reveals a sharply demarcated, photosensitive hyperpigmented rash on the neck and dorsal hands. Serum albumin is 2.8 g/dL. He denies neurological symptoms beyond disorientation. Deficiency of which vitamin most likely explains this clinical syndrome?
Answer choices
- AVitamin B12
- BRiboflavin
- CVitamin D
- DNiacinCorrect answer
- EVitamin C
- FPantothenic acid
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