Background: Pellagra caused by niacin deficiency in alcoholics can be easily misdiagnosed because of similar symptoms to other alcohol-related diseases and the lack of the classical triad of signs. Aim: This study aimed to define the clinical presentation of alcoholic pellagra for early diagnosis and timely treatment. Methods: The clinical data of 16 alcohol-dependent patients who had pellagra and treated in our hospital from January 2002 to December 2019 were retrospectively analyzed. The local medical ethics committee approval (Medical Ethics Committee
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