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Journal of Dermatology and Dermatologic Diseases

ISSN: 2684-4281

Open Access

Pellagra

Pellagra is a vitamin deficiency disease most frequently caused by a chronic lack of niacin (vitamin B3 or vitamin PP, from pellagra-preventing factor) in the diet. It can be caused by decreased intake of niacin or tryptophan, and possibly by excessive intake of leucine. It may also result from alterations in protein metabolism in disorders such as carcinoid syndrome or Hartnup disease. A deficiency of the amino acid lysine can lead to a deficiency of niacin as well.

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