a-patient-presents-with-sore-throat-swollen-tongue-and-dry-cracked-lips-which-b-

Question

A patient presents with sore throat, swollen tongue, and dry cracked lips. Which B vitamin deficiency is most consistent with these signs and what is the coenzyme it helps form?

Accepted Answer

Riboflavin (B2) deficiency, which is required to form FAD (flavin adenine dinucleotide).

Answer

Niacin (B3) deficiency, which primarily disrupts CoA formation leading to cracked lips.

Answer

Pantothenic acid (B5) deficiency, which prevents NAD+ formation and causes mucosal lesions.

Answer

Thiamine (B1) deficiency, which lowers biotin-dependent coenzymes producing oral mucosal changes.