Vitamins and Nutrition USMLE Step 1 Practice Question
A 45 year old woman has chronic watery diarrhea, episodic flushing, and a 6 month history of worsening confusion and hyperpigmented scaling on sun exposed areas of her hands and neck. Urine 5 HIAA is markedly elevated. Deficiency of which vitamin is most likely contributing to her rash and neuropsychiatric symptoms?
Answer choices
- AVitamin B1
- BVitamin B2
- CVitamin B12
- DVitamin B3Correct answer
- EVitamin B6
- FVitamin B5
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