The classic signs and symptoms of pellagra include

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Pellagra is a nutritional deficiency disease caused by a lack of niacin and/or tryptophan in the diet. The classic symptoms of pellagra include dermatitis, diarrhea, and dementia. This combination of symptoms is sometimes referred to as the "three Ds" of pellagra. Other symptoms may include a red, swollen tongue, loss of appetite, and weakness. Heartburn, weak bones, and night blindness are not typically associated with pellagra.

The Classic Signs and Symptoms of Pellagra Include