Web Resources for Casal's necklace
Relevant Clinical Literature
Wikipedia on Casal's necklace (Less technical, ? quality control)
UpToDate® on Casal's necklace (Technical, SUBSCRIPTION)
Also known as Casal's collar. Erythematous, scaly rash in the distribution of where a necklace would sit.
Considered a manifestation of pellagra, disappearing within days of supplementation.