Brody FoglemanHarsh JhaNoel BrownleeJuliSu DiMucci-WardSpartanburg, South Carolina, United States Pellagra is a disease of vitamin B3 (niacin) deficiency. Niacin is the precursor for many physiologic processes involving nicotinamide adenine dinucleotide (NAD), an enzyme that carries out long biochemical processes essential to a wide range of metabolic functions. While the understanding of niacin physiology is relatively…