NIH physician Dr. Joseph Goldberger's discovery of the cause for pellagra, a disease, resulting from a diet deficient in vitamin B, that killed many poor Southerners in the early part of the 20th century. Photo reproduced with permission of the Joseph Goldberger family . Small boy with pellagra.

About Pellagra. Many rare diseases have limited information. Currently GARD aims to provide the following information for this disease: Population Estimate: This section is currently in development. Symptoms: This section is currently in development. Cause: GARD does not currently have information about the cause of this condition.