What is the name of this appearance which is seen in pellagra?
Burn
Casal's necklace
Shawl sign
Gottron's papule
This is Casal's necklace shown in picture, which occurs in Vitamin B3/ Niacin deficiency. Niacin is formed from tryptophan amino acid. So, tryptophan deficiency can lead to Casal's necklace. Pellagra Etiology: Dietary deficiency of Niacin or its precursor tryptophan. C/f: Middle aged persons Pellagra: - (Dermatitis, Dementia, Diarrhea, Death) T/t: Niacinamide 300-500mg/dayorally in divided doses.
FMGE 2019