Rosmaninho, A.Sanches, M.Fernandes, I.Pinto-Almeida, T.Vilaça, S.Oliveira, A.Selores, M.2014-09-022014-09-022012Dermatology Online Journal 18 (4): 121087-2108http://hdl.handle.net/10400.16/1660Pellagra is a nutritional disease caused by the deficiency of niacin. We describe a case of pellagra as the initial presentation of Crohn disease, which has been rarely described in the literature.engjournal article