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    Pellagra

    Vitamin B3 deficiency; Deficiency - niacin

    Pellagra is a disease that occurs when a person does not get enough niacin (one of the B complex vitamins) or tryptophan (an amino acid).

    Causes

    Pellagra is caused by having too little niacin or tryptophan in the diet. It can also occur if the body fails to absorb these nutrients. It may develop after gastrointestinal diseases or with alcoholism.

    The disease is common in parts of the world where people have a lot of corn in their diet.

    Symptoms

    Symptoms of pellagra include:

    • Delusions
    • Diarrhea
    • Inflamed mucus membranes
    • Mental confusion
    • Scaly skin sores

    References

    So YT, Simon RP. Deficiency diseases of the nervous system. In: Daroff RB, Fenichel GM, Jankovic J, Mazziotta JC, eds. Bradley’s Neurology in Clinical Practice. 6th ed. Philadelphia, Pa: Saunders Elsevier; 2012:chap 57.

    Kumar N. Neurologic presentation of nutritional deficiencies. Neurol Clin. 2010;28:107-170.

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    • Vitamin B3 deficit

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      • Vitamin B3 deficit

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      Review Date: 10/14/2012

      Reviewed By: Linda J. Vorvick, MD, Medical Director and Director of Didactic Curriculum, MEDEX Northwest Division of Physician Assistant Studies, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.

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      St. Luke's Hospital - 232 South Woods Mill Road - Chesterfield, MO 63017 Main Number: 314-434-1500 Emergency Dept: 314-205-6990 Patient Billing: 888-924-9200
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