Vitamins and Nutrition USMLE Step 1 Practice Question
A 15-year-old girl with restrictive eating habits presents with sore throat, angular cheilitis, and a greasy scaling rash over the nasolabial folds. Vital signs show BP 98/62, HR 102, RR 18, Temp 37.2°C, SpO2 98%. Physical examination reveals corneal vascularization and glossitis. Serum albumin is 3.1 g/dL. She denies abdominal pain. Which vitamin deficiency best explains this clinical presentation?
Answer choices
- AVitamin B2Correct answer
- BVitamin B7
- CVitamin B3
- DVitamin B1
- EVitamin C
- FVitamin B12
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